- stunnel-users - stunnel.org

Life cycle information
by Ben Harper 30 Jan '17

30 Jan '17

Greetings, I am trying to confirm some life cycle information, mainly supported version(s) and what versions do not insure backwards compatibility. It would appear that only the latest version is supported, per the first item under 'Before you send your question to stunnel-users' on the Mailing Lists page[0]. Does this project use semantic versioning? Will incompatibilities only come when a 6.x.x version is released? It seems at one point this was the case per the 'Upgrading to stunnel 4' link on the Documentation page[1]. Are my assumptions correct? Thanks, Ben [0]: https://www.stunnel.org/lists.html [1]: https://www.stunnel.org/docs.html

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Proxy one site to HTTPS?
by Jeffrey Walton 30 Jan '17

30 Jan '17

Hi Everyone, I'm having trouble setting up a proxy for one site. The client is MacPorts on OS X 10.5. It makes some requests for files over port 80, but they apparently need to be made over port 443. Also see https://trac.macports.org/ticket/53423 and https://trac.macports.org/ticket/53347. My first question is, is it possible to proxy one site to HTTPS? My second question is, how does one do so if it is possible? The concrete example from the 53423 bug report is, I need to proxy requests from http://distfiles.macports.org/... to https://distfiles.macports.org/... I also need the opposite on the responses. Thanks in advance, Jeff

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Client certificate using CAPI
by stunnel.org＠pepak.net 29 Jan '17

29 Jan '17

Hi! I am trying to use stunnel to connect to my own server using both a server and a client certificate. I got the tunnel to work, provided that the client uses a PEM certificate stored in a file. However, I would like to use CAPI, because that would allow me to use a smart card, which I finally got Windows to recognize (a nightmare of its own). Unfortunately, it seems that the client-side stunnel won't send a client certificate because the server-side stunnel will always close the connection with: SSL_accept: 140890C7: error:140890C7:SSL routines:ssl3_get_client_certificate:peer did not return a certificate My client-side stunnel log shows that server sent some kind of identification of all the supported client certificates to the client, but that's all - the client stunnel fails to follow through: TLS state (connect): SSLv3 read server key exchange A Client CA: emailAddress=some(a)email.com, O=Some name, CN=Pepak Yubico 4 White Client CA: emailAddress=root(a)email.com, CN=Pepak (root CA) TLS state (connect): SSLv3 read server certificate request A TLS state (connect): SSLv3 read server done A TLS state (connect): SSLv3 write client certificate A TLS state (connect): SSLv3 write client key exchange A TLS state (connect): SSLv3 write change cipher spec A TLS state (connect): SSLv3 write finished A TLS state (connect): SSLv3 flush data SSL_connect: Peer suddenly disconnected As far as I can tell, the CN=Pepak Yubico 4 White matches what my Windows show as the name of the certificate on the smartcard. Following up on https://www.stunnel.org/pipermail/stunnel-users/2016-February/005393.html, I tried to add a "key = Pepak Yubico 4 White" line to the client-side stunnel's config, but it doesn't seem to have any effect. What could be the problem? The client-side config file is: compression = deflate debug = debug fips = no taskbar = no options = NO_SSLv2 engine = capi [echo-client] client = yes accept = 3000 connect = 10.0.0.1:30000 requireCert = yes verifyChain = yes verifyPeer = yes CAfile = desktop.pem engineId = capi key = Pepak Yubico 4 White The only suspicious thing that I see is that my client certificate says that its only purpose is to verify the identity of the remote computer. Could that be the reason the handshake fails? Thanks for any help. Pepak

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SSL errors do not trigger failover?
by Richard Monk 27 Jan '17

27 Jan '17

Hello! We are using stunnel to work around an SSL issue in another service, and set stunnel.conf up to do prio failover. We noticed something unusual. If the TCP session connects, but the SSL negotiation fails, it doesn't fail over to the next server on the list. I looked at the code for the latest version and this doesn't seem to be caught anywhere. What I saw in client.c shows that it only checks failover after trying to establish the TCP session, but then the SSL session happens later and doesn't give any info back to the failover code should something go wrong. Is this expected behavior, or should I look into a bug report / patch? I was thinking maybe a configurable option to allow SSL errors to trigger failover just like TCP errors. -- Richard Monk (rmonk(a)redhat.com) - Senior Principal Security Analyst Red Hat Inc. - Raleigh NC GPG Key ID: 0x942CDB25

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Please Help to configure Stunnel for SHOUTcast
by Frans Rehl 24 Jan '17

24 Jan '17

Hello Stunnel Members I am wondering if any of you can help me to configure stunnel for shoutcast. I have a VPS with Windows Server 2012 R2 and I cannot find the correct configuration for windows server. Can someone help me please? My shoutcast is currently streaming on port 8000 however, I don't understand some part of the configuration, such as; cert -pem and ca-pem Could someone guide me? Best

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Creating tunnel to smtp.office365.com:587
by Andrew Culver 17 Jan '17

17 Jan '17

Hello, This is my first time using stunnel so I'm still learning how it works. This may have already been asked, but I'm not sure what to search for in the archives. We have a number of hosts in private IP space that we'd like to be able to send mail to smtp.office365.com:587. I'm trying to configure stunnel for this purpose. What I'd like is to set up a stunnel instance on a server which will accept TLS connections on port 50025. Stunnel will then connect to smtp.office365.com:587 which also uses TLS. How can I do this? I am able to configure stunnel to accept my connection on 587, but the connection is immediately closed (below). If I add client = yes, then I just get: aculver stunnel # openssl s_client -starttls smtp -connect localhost:50025 CONNECTED(00000003) didn't found starttls in server response, try anyway... Here is my config: aculver stunnel # egrep -v '^;|^$' stunnel.conf ; Sample stunnel configuration file for Unix by Michal Trojnara 2002-2015 setuid = nobody setgid = nogroup pid = /usr/local/var/run/stunnel/stunnel.pid [o365-smtp] accept = 50025 cert = /usr/local/etc/stunnel/stunnel.pem connect = smtp.office365.com:587 verifyChain = yes CApath = /etc/ssl/certs protocol = smtp What am I doing wrong? Here's what I get when I don't have client = yes: aculver stunnel # openssl s_client -starttls smtp -connect localhost:50025 CONNECTED(00000003) depth=0 C = CA, ST = Ontario, L = London, O = The University of Western Ontario, OU = ITS, CN = aculver.ws.its.uwo.ca, emailAddress = aculver(a)uwo.ca verify error:num=18:self signed certificate verify return:1 depth=0 C = CA, ST = Ontario, L = London, O = The University of Western Ontario, OU = ITS, CN = aculver.ws.its.uwo.ca, emailAddress = aculver(a)uwo.ca verify return:1 139954991064736:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1263:SSL alert number 40 139954991064736:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:s23_lib.c:177: --- Certificate chain 0 s:/C=CA/ST=Ontario/L=London/O=The University of Western Ontario/OU=ITS/CN=aculver.ws.its.uwo.ca/emailAddress=aculver(a)uwo.ca i:/C=CA/ST=Ontario/L=London/O=The University of Western Ontario/OU=ITS/CN=aculver.ws.its.uwo.ca/emailAddress=aculver(a)uwo.ca --- Server certificate -----BEGIN CERTIFICATE----- MIIEJzCCAw+gAwIBAgIJAM0DgGLDIh5lMA0GCSqGSIb3DQEBCwUAMIGpMQswCQYD VQQGEwJDQTEQMA4GA1UECAwHT250YXJpbzEPMA0GA1UEBwwGTG9uZG9uMSowKAYD VQQKDCFUaGUgVW5pdmVyc2l0eSBvZiBXZXN0ZXJuIE9udGFyaW8xDDAKBgNVBAsM A0lUUzEeMBwGA1UEAwwVYWN1bHZlci53cy5pdHMudXdvLmNhMR0wGwYJKoZIhvcN AQkBFg5hY3VsdmVyQHV3by5jYTAeFw0xNzAxMTcxODAwNTdaFw0yMDAxMTcxODAw NTdaMIGpMQswCQYDVQQGEwJDQTEQMA4GA1UECAwHT250YXJpbzEPMA0GA1UEBwwG TG9uZG9uMSowKAYDVQQKDCFUaGUgVW5pdmVyc2l0eSBvZiBXZXN0ZXJuIE9udGFy aW8xDDAKBgNVBAsMA0lUUzEeMBwGA1UEAwwVYWN1bHZlci53cy5pdHMudXdvLmNh MR0wGwYJKoZIhvcNAQkBFg5hY3VsdmVyQHV3by5jYTCCASIwDQYJKoZIhvcNAQEB BQADggEPADCCAQoCggEBAL2A3QEU7ReMc+2dTJdxVnQx33dIomQvO6QOAaFkI9pt XF/UhSBCg3ZD2yZeKe5GQ0+KqSCjuxTZE+BMTIeNUtaFEDr9bMAx0toknm29ve1B wTErWoIjE4yqQ+j/D9JLp4BzBcptz1zaEdvhzzZo2zWVpqHrUHSXzoIELD4xyZyF UgbQ057diKr1fqM7q3ozCofslFGEjWtc8SsfwgToT72g7bRhx8a6F6SSX8afcVx0 hvvC998QbTNUCpJO6GPzWWCsITc3RPMZK3OJsbI4NNBKDZ8eE2NTSkcKjnibRWFx bwCTlSZ5XABQrgXmEO51cx6DBAK/8cV8W2H/VNr9SXkCAwEAAaNQME4wHQYDVR0O BBYEFMPXcnQduKdorSNrFIR1up+a5V7RMB8GA1UdIwQYMBaAFMPXcnQduKdorSNr FIR1up+a5V7RMAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQELBQADggEBAKqmaC+g RD1KEWT2yJit0FRIuwzFYmh/jgQ0ofabWQIuQtyNeqVnATU5FMOmox9MgbbsBanC SBVxuiLsWruk6VTjByHaIPAfsdWVKYMfLXO2Rku8GTp1X0B+HcNxh18tKr9s72rB AmapnD1GrYDAlBBgwQz+Ei1iRz+rqKsPvvJ/IEzZ02uhxV0ZWxBi5gTqAQc+pi3y I8DNBTxev2BMw+YCeNnrH3ryrJ8vKYlUmxE0k2POH1ihlpzdx9jtKC9TKR1kahMP 3lbldSHmW9DWeOfzQZ6NDHADSI698HaYfWQXUqbXjNJsxFb47pnjmyWgKseAT9iw w9nPDtkCmUihuBM= -----END CERTIFICATE----- subject=/C=CA/ST=Ontario/L=London/O=The University of Western Ontario/OU=ITS/CN=aculver.ws.its.uwo.ca/emailAddress=aculver(a)uwo.ca issuer=/C=CA/ST=Ontario/L=London/O=The University of Western Ontario/OU=ITS/CN=aculver.ws.its.uwo.ca/emailAddress=aculver(a)uwo.ca --- No client certificate CA names sent --- SSL handshake has read 1741 bytes and written 138 bytes --- New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384 Server public key is 2048 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1.2 Cipher : ECDHE-RSA-AES256-GCM-SHA384 Session-ID: Session-ID-ctx: Master-Key: 9B6FC3BBEEADF6673416272CA03FA44A2B10BADB3B843317403C03904F0E45E922EA2581F313BF5282C0A47498E43C8D Key-Arg : None PSK identity: None PSK identity hint: None SRP username: None Start Time: 1484680413 Timeout : 300 (sec) Verify return code: 18 (self signed certificate) --- aculver stunnel # Thanks, Andrew

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Forwarding ip without HAProxy protocol
by John BYaka 06 Jan '17

06 Jan '17

Is it possible to forward real ip in special header? I know about 'protocol=proxy' but for using this i need to implement HAProxy protocol in app.

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Stunnel and tokens on Windows
by stunnel.org＠pepak.net 31 Dec '16

31 Dec '16

Hi! I would very much like to switch my Stunnel setup to use hardware tokens. Stunnel apparently supports that using a PKCS11 engine, but I am having hard luck trying to figure it out for Windows, because 1) my practical experience with tokens is nonexistent at the moment, and 2) there are very few pages with a relevant information (basically, I was only able to find the very ancient http://martlaak.wikia.com/wiki/Stunnel_and_engine_pkcs11 and two russian pages http://forum.rutoken.ru/topic/1639/ and https://habrahabr.ru/post/135369/ which probably do just what I need, but I am not so sure they are applicable to my needs as I do not have a rutoken). I guess I would be satified if someone told me, "yes, these pages are applicable, just buy a xxxtoken instead of rutoken"; I would be happier with a full guide, but I can't expect anyone to write it - with the possible exception of Michal Trojnara's paid support (would that be possible?). Thanks, pepak

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Re: [stunnel-users] Public domain [PATCH] support environment variables in config file
by Dmitry Bakshaev 21 Dec '16

21 Dec '16

2016-05-31 12:02 GMT+04:00 Pierre Delaage <delaage.pierre(a)free.fr>: > Did not have a look at the code yet, but should it be possible to replace > envvars usage by some keys in the registry on windows platform and/or > %userprofile%/config-file ? > > Anyway, my opinion on the patch is that there is no real interest for > "generic/self-expanding" config file , and it is even dangerous : > I would not trust stunnel if, at run time, its config could be modified by > USER envvars... > which difference between %userprofile%/config-file and USER envvars? both are USER owned and USER controlled. certificate and keys also USER private data. and stunnel started by USER owned by USER. if stunnel started by SYSTEM/ADMIN he uses SYSTEM/ADMIN envvars (if needed), certs, keys, etc. global "generic/self-expanding" config file is ADMIN owned. USER has permissions to substitute some values, restricted by ADMIN.

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problem running stunnel as windows service
by Jeff Saxton 09 Dec '16

09 Dec '16

stunnel 5.38 on x86-pc-msvc-1500 platform compiled/running with OpenSSL 1.0.2j-fips 26 Sep 2016 Windows Server 2012R2 Standard When I try and start the service I get: Windows could not start the Secure Socket Tunneling Protocol Service on the Local Computer. Error: 1079: The account specified for this service is different from the account specified for other services running in the same process. So after a little reading I went into Services->Logon and checked: Allow Service to interact with desktop Same Error So I created an account in the Local Administrators group and gave it logon as a service Same thing Any ideas? -- Jeff Saxton Tanium CELL: +US 650.235.0776

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Using transparent destination option with multiple network interfaces.
by Rodney Lott 08 Dec '16

08 Dec '16

Hi, there. Base server details: - Using the latest stunnel 5.37 - Ubuntu Trusty - The computers communicating with each other use bridged interface addresses that are configured by the clustering software (i.e. to ensure that at least one of the nodes is master and host to some common addresses) - For discussion purposes, let's say that each server has an eth0 and eth1, and that the master node has two additional bridged address (ie. eth0:shared-ip1, eth1:shared-ip2) - The slave nodes will try to connect to eth0:shared-ip1:20001 and eth1:shared-ip2:20001 that are hosted on the master - The master node will also try to connect to these as well, while listening on port 20001 - Not running in a chroot and am running stunnel as stunnel4 user - I have created a working solution using 4 services in the stunnel config and using hard-coded destinations in the iptables rules and the stunnel config. I want to create something more dynamic and versatile. I am trying to insert a stunnel instance between my server application that attempts to connect to its twin on another server, using the bridging addresses. I am trying to avoid hard-coding destination IP addresses in my stunnel configuration file and the iptables rules. I also don't want to have separate rules for each interface. For example, from server A's perspective (i.e. the master node), the desirable sequence of events are: - Attempt to connect to port 20001 using the bridge addresses as destinations (in this case, they would be local interfaces). - Intercept the requests to port 20001 on server A and divert them to port 40000 for encryption (i.e. the local stunnel instance). - Send unencrypted data from stunnel directly to local 20001. At the same time, server B is doing the same, except that the bridge addresses reside on server A and are not local. So, server A would also need to do this: - Intercept external request for port 20001 and send it to stunnel port 40000 for encryption - Send decrypted packets to local port 20001 This same type of sequence would also be happening My stunnel configuration looks like this: fips=yes pid=/var/run/stunnel4/testsrv.pid debug=7 output=/var/log/stunnel4/testsrv.log sslVersion = TLSv1.2 key = <private-key-location> cert = <cert-location> CAfile = <ca-file-location> ciphers = ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:ECDH-RSA-AES256-GCM-SHA384:ECDH-ECDSA-AES256-GCM-SHA384:ECDH-RSA-AES256-SHA384:ECDH-ECDSA-AES256-SHA384:AES256-GCM-SHA384:AES256-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:DHE-DSS-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES128-SHA256:DHE-DSS-AES128-SHA256:ECDH-RSA-AES128-GCM-SHA256:ECDH-ECDSA-AES128-GCM-SHA256:ECDH-RSA-AES128-SHA256:ECDH-ECDSA-AES128-SHA256:AES128-GCM-SHA256:AES128-SHA256 [test-srv] client=yes accept=40000 transparent=destination My iptables rules, base on what I read in the man page, are this: STUNNEL_UID=$(id -u stunnel4) # Redirect any incoming requests to port 20001 iptables -t nat -A PREROUTING -p tcp --dport 20001 ! -i lo -j DNAT --to-destination 127.0.0.1:40000 iptables -A INPUT -p tcp --dport 40000 -j ACCEPT # Redirect any outgoing locally generated requests for 20001 to stunnel port 40000 iptables -t nat -A OUTPUT -p tcp --dport 20001 -m owner ! --uid-owner $STUNNEL_UID -j DNAT --to-destination 127.0.0.1:40000 # Redirect the output of stunnel to the local 20001 port iptables -t nat -A OUTPUT -p tcp --dport 20001 -m owner --uid-owner $STUNNEL_UID -j REDIRECT --to-ports 20001 iptables -t nat -A INPUT -p tcp -d 127.0.0.1 --dport 20001 -j ACCEPT These rules are not completely adequate. For now, I'm just trying to get server A's connection to port 20001 working without having to worry about incoming from server B. When I do this and start stunnel and my process, server A's stuff appears to loop endlessly. I think this is happening because the packets that come out of stunnel, due to the transparency configuration, look exactly the same as the original. If I log stuff using iptables, I see repeat entries like this: nat-OUTPUT: IN= OUT=lo SRC=150.150.242.26 DST=150.150.242.27 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=30541 DF PROTO=TCP SPT=50101 DPT=20001 WINDOW=43690 RES=0x00 SYN URGP=0 filter-OUTPUT: IN= OUT=lo SRC=150.150.242.26 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=30541 DF PROTO=TCP SPT=50101 DPT=40000 WINDOW=43690 RES=0x00 SYN URGP=0 nat-POSTROUTING: IN= OUT=lo SRC=150.150.242.26 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=30541 DF PROTO=TCP SPT=50101 DPT=40000 WINDOW=43690 RES=0x00 SYN URGP=0 filter-INPUT: IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=150.150.242.26 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=30541 DF PROTO=TCP SPT=50101 DPT=40000 WINDOW=43690 RES=0x00 SYN URGP=0 filter-OUTPUT: IN= OUT=lo SRC=150.150.242.26 DST=127.0.0.1 LEN=52 TOS=0x00 PREC=0x00 TTL=64 ID=30542 DF PROTO=TCP SPT=50101 DPT=40000 WINDOW=342 RES=0x00 ACK URGP=0 filter-INPUT: IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=150.150.242.26 DST=127.0.0.1 LEN=52 TOS=0x00 PREC=0x00 TTL=64 ID=30542 DF PROTO=TCP SPT=50101 DPT=40000 WINDOW=342 RES=0x00 ACK URGP=0 nat-OUTPUT: IN= OUT=lo SRC=150.150.242.26 DST=150.150.242.27 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=48827 DF PROTO=TCP SPT=50102 DPT=20001 WINDOW=43690 RES=0x00 SYN URGP=0 filter-OUTPUT: IN= OUT=lo SRC=150.150.242.26 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=48827 DF PROTO=TCP SPT=50102 DPT=40000 WINDOW=43690 RES=0x00 SYN URGP=0 nat-POSTROUTING: IN= OUT=lo SRC=150.150.242.26 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=48827 DF PROTO=TCP SPT=50102 DPT=40000 WINDOW=43690 RES=0x00 SYN URGP=0 filter-INPUT: IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=150.150.242.26 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=48827 DF PROTO=TCP SPT=50102 DPT=40000 WINDOW=43690 RES=0x00 SYN URGP=0 filter-OUTPUT: IN= OUT=lo SRC=150.150.242.26 DST=127.0.0.1 LEN=52 TOS=0x00 PREC=0x00 TTL=64 ID=48828 DF PROTO=TCP SPT=50102 DPT=40000 WINDOW=342 RES=0x00 ACK URGP=0 filter-INPUT: IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=150.150.242.26 DST=127.0.0.1 LEN=52 TOS=0x00 PREC=0x00 TTL=64 ID=48828 DF PROTO=TCP SPT=50102 DPT=40000 WINDOW=342 RES=0x00 ACK URGP=0 filter-OUTPUT: IN= OUT=lo SRC=150.150.242.26 DST=127.0.0.1 LEN=269 TOS=0x00 PREC=0x00 TTL=64 ID=48829 DF PROTO=TCP SPT=50102 DPT=40000 WINDOW=342 RES=0x00 ACK PSH URGP=0 filter-INPUT: IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=150.150.242.26 DST=127.0.0.1 LEN=269 TOS=0x00 PREC=0x00 TTL=64 ID=48829 DF PROTO=TCP SPT=50102 DPT=40000 WINDOW=342 RES=0x00 ACK PSH URGP=0 ... As can be seen, line 1 and line 7 are virtually identical. In the stunnel log, I can see that stunnel is receiving multiple requests for port 20001 in rapid succession but is not actually receiving any reply from the final destination. So, if anyone has any ideas, tweaks or suggestions for how to solve this problem or where I am going wrong, I would appreciate it. I can use a static configuration with hard-coded destination IP's but if there is an alternative, I would like to know. I have tried for several days to figure this out and have searched Google extensively, including stunnel-users postings, to figure out how to do this without success. Thanks, Rodney Lott

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setgroups: notowner (1)
by Jones, Russell - NONEMP 08 Dec '16

08 Dec '16

I am working on a project where we are migrating to a new datacenter. The new datacenter will not allow compilers on their servers, so I am unable to do a new stunnel build on the new server. I am attempting to move the stunnel install/executables from the old server to the new one. I got past several errors for libraries not found, but now I am stuck. stunnel process will not start, and gets several messages "setgoups: Not owner (1)" I am not sure what I need to do with permissions, ownership, etc to make this work. log attached Thanks for your help, Russell J. This electronic message transmission contains information from CSRA that may be attorney-client privileged, proprietary or confidential. The information in this message is intended only for use by the individual(s) to whom it is addressed. If you believe you have received this message in error, please contact me immediately and be aware that any use, disclosure, copying or distribution of the contents of this message is strictly prohibited. NOTE: Regardless of content, this email shall not operate to bind CSRA to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of email for such purpose.

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Stunnel in inetd mode and PID in logs
by Bruce Guenter 02 Dec '16

02 Dec '16

Hi. I am running stunnel in inetd mode (under tcpserver). Prior to version 5.12 (as far as I can tell), the logs output by stunnel would include the tag LOG#[PID]. As of version 5.12, the logs now say LOG#[main] (and later LOG#[ui]). Is there any way to get the PID back in the logs? I have tried all different choices for the logId configuration option, and it doesn't seem to make a difference there. Thanks. -- Bruce Guenter <bruce(a)untroubled.org> http://untroubled.org/

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Re: [stunnel-users] stunnel 5.38 released
by Javier 26 Nov '16

26 Nov '16

Hi there. Dumb error I just found. Dumb because I just found it and maybe it was earlier among us. Or maybe it is "a feature". But I'd swear it worked as expected in the past. Testing the new SNI option I made a mistake and I had to edit and reload the configuration file. Nothing strange until here. The problem is comming because I load a custom .conf file as "stunnel.exe file.conf" for the server mode, so when a parsing error is found, Stunnel lose the track of the custom .conf file and when you reload the corrected configuration through the "Reload configuration" menu option, it doesn't load the custom .conf but the default stunnel.conf. But before reloading, the "Edit configuration" menu option points correctly to the correct configuration file and opens it to edit. Only "Reload configuration" lose the track of the file. This is happening in the windows environment (just if it wasn't clear enough by the .exe extension ;) ). Windows 2000 (yet). I can't tested versions beyond. Regards.

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Re: [stunnel-users] Help in setting stunnel in server mode to over come TLSV2 compatibility
by Jose Alf. 25 Nov '16

25 Nov '16

Jothish, 1. You are using a very outdated version of OpenSSL (openssl 0.9.8 is EOL). I suggest you use a newer, supported version. 2. On a DOS Window, try this:openssl dhparam -rand randfile1;randfile2;randfile3 1024 where randfile1,randfile2.... are existing files or directories to use as entrophy sources. If you're on Linux you can use dd if=/dev/urandom count=2 | openssl dhparam -rand - 1024 This will print something like this:WARNING: can't open config file: c:\openssl-vc/ssl/openssl.cnf Loading 'screen' into random state - done 0 semi-random bytes loaded Generating DH parameters, 1024 bit long safe prime, generator 2 This is going to take a long time ..+.. bla, bla....++* unable to write 'random state' -----BEGIN DH PARAMETERS----- MIGHAoGBAJJ+QAYkKQd0pG1lxZKDYVZaURkTINQho8CWCUYOMp2ZEwZeMrEv+kjd PVb4Ilnah1TmZQOxu1v8HtSWmKpclhlTDKjmDbhznUFkQhmRGjxXDCfrhnvNI4hV kOB/3lGcWo50ttf+ZqNaXd0lKf9YfnjkRUSUtrHiMRL9CdecxQXbAgEC -----END DH PARAMETERS----- Now, cut from ---BEGIN... all the way to PARAMETERS--- and add it to your cert PEM file. 3. Try again, your check command: openssl dhparam -inform PEM -in ./training_client.pem -check -textShould print something like: DH Parameters: (1024 bit) prime: 00:92:7e:40:06:24:29:07:74:a4:6d:65:c5:92:83: ... 31:12:fd:09:d7:9c:c5:05:db generator: 2 (0x2) DH parameters appear to be ok. -----BEGIN DH PARAMETERS----- MIGHAoGBAJJ+QAYkKQd0pG1lxZKDYVZaURkTINQho8CWCUYOMp2ZEwZeMrEv+kjd ....-----END DH PARAMETERS----- 4. Now, try connecting from SFDC to tibco and let us know. SaludosJose From: "jothish.chokkalingam(a)accenture.com" <jothish.chokkalingam(a)accenture.com> To: josealf(a)rocketmail.com Cc: cbrowne(a)cbcs-usa.com; stunnel-users(a)stunnel.org Sent: Thursday, November 24, 2016 6:45 AM Subject: RE: [stunnel-users] Help in setting stunnel in server mode to over come TLSV2 compatibility #yiv9373448809 #yiv9373448809 -- _filtered #yiv9373448809 {font-family:Wingdings;panose-1:5 0 0 0 0 0 0 0 0 0;} _filtered #yiv9373448809 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv9373448809 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered #yiv9373448809 {font-family:Consolas;panose-1:2 11 6 9 2 2 4 3 2 4;}#yiv9373448809 #yiv9373448809 p.yiv9373448809MsoNormal, #yiv9373448809 li.yiv9373448809MsoNormal, #yiv9373448809 div.yiv9373448809MsoNormal {margin:0in;margin-bottom:.0001pt;font-size:11.0pt;color:black;}#yiv9373448809 a:link, #yiv9373448809 span.yiv9373448809MsoHyperlink {color:#0563C1;text-decoration:underline;}#yiv9373448809 a:visited, #yiv9373448809 span.yiv9373448809MsoHyperlinkFollowed {color:#954F72;text-decoration:underline;}#yiv9373448809 p {margin-right:0in;margin-left:0in;font-size:11.0pt;color:black;}#yiv9373448809 pre {margin:0in;margin-bottom:.0001pt;font-size:10.0pt;color:black;}#yiv9373448809 p.yiv9373448809MsoListParagraph, #yiv9373448809 li.yiv9373448809MsoListParagraph, #yiv9373448809 div.yiv9373448809MsoListParagraph {margin-top:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;font-size:11.0pt;color:black;}#yiv9373448809 span.yiv9373448809HTMLPreformattedChar {font-family:Consolas;color:black;}#yiv9373448809 span.yiv9373448809EmailStyle20 {color:windowtext;}#yiv9373448809 span.yiv9373448809EmailStyle21 {color:#1F497D;}#yiv9373448809 span.yiv9373448809EmailStyle22 {color:#1F497D;}#yiv9373448809 span.yiv9373448809EmailStyle23 {color:#1F497D;}#yiv9373448809 .yiv9373448809MsoChpDefault {font-size:10.0pt;} _filtered #yiv9373448809 {margin:1.0in 1.0in 1.0in 1.0in;}#yiv9373448809 div.yiv9373448809WordSection1 {}#yiv9373448809 _filtered #yiv9373448809 {} _filtered #yiv9373448809 {} _filtered #yiv9373448809 {} _filtered #yiv9373448809 {} _filtered #yiv9373448809 {} _filtered #yiv9373448809 {} _filtered #yiv9373448809 {} _filtered #yiv9373448809 {} _filtered #yiv9373448809 {} _filtered #yiv9373448809 {}#yiv9373448809 ol {margin-bottom:0in;}#yiv9373448809 ul {margin-bottom:0in;}#yiv9373448809 Jose, For the issue as mentioned in below down mail I am following below two approaches, 1. Move the TLSv1.2 enabled traffic to an intermediate port and then to target port which has TLS1 enabled, in that ssl handshake from intermediate to target port getting below error. While triaging with openssl command, it is observed that the DH parameters are not proper. So we are trying to add the dh parameters C:\Users\robin.johnson\Documents\SSL\SSL>C:\openssl-0.9.8k_X64\bin\openssl dhparam -inform PEM -in ./training_client.pem -check -text unable to load DH parameters 1800:error:0906D06C:PEM routines:PEM_read_bio:no start line:.\crypto\pem\pem_lib.c:650:Expecting: DH PARAMETERS stunnel.logà2016.11.23 23:08:32 LOG3[131]: SSL_connect: 14082174: error:14082174:SSL routines:ssl3_check_cert_and_algorithm:dh key too small 2. Using https service in stunnel traffic is received by TLS V1.1 divert to non ssl enabled port. Thanks and Regards, Jothish TIBCO TSD Ph. : +91 44 39263958 Mobile : +91 9884040171 Support : +91 9962007110 OC : jothish.chokkalingam Group mail:- Telstra.psm.tsd.tibco(a)accenture.com From: Josealf.rm [mailto:[email protected]] Sent: Thursday, November 24, 2016 4:36 PM To: Chokkalingam, Jothish <jothish.chokkalingam(a)accenture.com> Cc: cbrowne(a)cbcs-usa.com; stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] Help in setting stunnel in server mode to over come TLSV2 compatibility Can you please elaborate? If you want us to help, you need to provide enough information. Regards Jose El 24/11/2016, a las 5:03 a.m., <jothish.chokkalingam(a)accenture.com> <jothish.chokkalingam(a)accenture.com> escribió: Jose, J you are right.i was trying but I thought it will work as a client and it worked as a workaround. But will check for the dh key small error while forwarding the traffic with SSL from intermediate port to another port. Thanks and Regards, Jothish TIBCO TSD Ph. : +91 44 39263958 Mobile : +91 9884040171 Support : +91 9962007110 OC : jothish.chokkalingam Group mail:- Telstra.psm.tsd.tibco(a)accenture.com From: Josealf.rm [mailto:[email protected]] Sent: Thursday, November 24, 2016 2:48 PM To: Chokkalingam, Jothish <jothish.chokkalingam(a)accenture.com> Cc: cbrowne(a)cbcs-usa.com; stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] Help in setting stunnel in server mode to over come TLSV2 compatibility Jothish, Stunnel in server mode is what you need, with 99.9% confidence. When you write: [https] Accept=443 Connect=local host:80 Client=no Stunnnel will expect TLS connections on port 443 and will forward then to your normal web server running on loopback port 80. Is that clear? Regards, Jose El 24/11/2016, a las 2:29 a.m., <jothish.chokkalingam(a)accenture.com> <jothish.chokkalingam(a)accenture.com> escribió: Is there a way to forward a Secure connection from one port to non secure port using stunnel. I am googling but unable to find. If you have can you let me know Thanks and Regards, Jothish TIBCO TSD Ph. : +91 44 39263958 Mobile : +91 9884040171 Support : +91 9962007110 OC : jothish.chokkalingam Group mail:- Telstra.psm.tsd.tibco(a)accenture.com From: stunnel-users [mailto:[email protected]]On Behalf Of Carter Browne Sent: Wednesday, November 23, 2016 9:30 PM To: stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] Help in setting stunnel in server mode to over come TLSV2 compatibility There are other tools for performing port forwarding with less overhead (I believe tappipe is one), although I make use stunnel to do this extensively. In order forward a secure connection from one port to another is a two step process with stunnel: A sample configuration segment would be: [SFDC reverse in] client = no accept = 8008 connect = localhost:48008 [SFDC reverse out] client = yes accept = localhost:48008 connect = localhost:8009 On 11/23/2016 10:18 AM, Rodney Lott wrote: Hi, there. I'm no stunnel expert, but here's my $0.05 (we have no pennies in Canada anymore ;-) ): - I would try including the key as well as the cert in your stunnel config - I would enable debug on the openssl s_client call to see if it will indicate why it is reseting. Same with your SFDC client to get more info. - Question: is the "WARNING: can't open config file" message below indicative of a permissions or path problem? - Question: Is the stunnel cert and key compatible with the TIBCO server's certificate? They need to be using certs generated from the same key source, don't they? - You might want to fix the SSL version in the stunnel config file (i.e. sslVersion = TLSv1.2) Good luck with your debugging. Rodney On 2016-11-22 07:43 PM, jothish.chokkalingam(a)accenture.com wrote: HI all, There is a problem we have currently connecting tibco client to SFDC sever via TLS v1.2 and that’s solved by using stunnel in client mode. And the communication from SFDC client to tibco server applications w.r.t TLS V1.2 I am unable to solve using stunnel. Below is the configuration in stunnel in server end to divert the traffic from 8008 to 8009, can you help here with the logs is the stunnel configuration is correct or there any missed/need to alter. [SFDC reverse proxy test] debug=7 ;client = yes accept = 8008àport used by sfdc client to connect to TIBCO server connect = localhost:8009 àTibco server that’s running cert = stunnel.pem 2016.11.23 08:31:56 LOG7[118]: Service [SFDC reverse proxy test] started 2016.11.23 08:31:56 LOG7[118]: Option TCP_NODELAY set on local socket 2016.11.23 08:31:56 LOG5[118]: Service [SFDC reverse proxy test] accepted connection from 101.167.198.14:54477 2016.11.23 08:31:56 LOG6[118]: Peer certificate not required 2016.11.23 08:31:56 LOG7[118]: SSL state (accept): before/accept initialization 2016.11.23 08:31:56 LOG3[118]: SSL_accept: Peer suddenly disconnected 2016.11.23 08:31:56 LOG5[118]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2016.11.23 08:31:56 LOG7[118]: Local descriptor (FD=696) closed 2016.11.23 08:31:56 LOG7[118]: Service [SFDC reverse proxy test] finished (0 left) PFB the openssl snap shot looks odd C:\Program Files (x86)\stunnel\bin>openssl s_client -connect localhost:8008 -prexit -showcerts WARNING: can't open config file: /devel/win32/openssl/openssl.cnf CONNECTED(0000016C) Thanks and Regards, Jothish TIBCO TSD Ph. : +91 44 39263958 Mobile : +91 9884040171 Support : +91 9962007110 OC : jothish.chokkalingam Group mail:- Telstra.psm.tsd.tibco(a)accenture.com This message is for the designated recipient only and may contain privileged, proprietary, or otherwise confidential information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the e-mail by you is prohibited. Where allowed by local law, electronic communications with Accenture and its affiliates, including e-mail and instant messaging (including content), may be scanned by our systems for the purposes of information security and assessment of internal compliance with Accenture policy. ______________________________________________________________________________________ www.accenture.com _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

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Re: [stunnel-users] Help in setting stunnel in server mode to over come TLSV2 compatibility
by Josealf.rm 24 Nov '16

24 Nov '16

Can you please elaborate? If you want us to help, you need to provide enough information. Regards Jose > El 24/11/2016, a las 5:03 a.m., <jothish.chokkalingam(a)accenture.com> <jothish.chokkalingam(a)accenture.com> escribió: > > Jose, > J you are right.i was trying but I thought it will work as a client and it worked as a workaround. But will check for the dh key small error while forwarding the traffic with SSL from intermediate port to another port. > > Thanks and Regards, > Jothish > TIBCO TSD > Ph. : +91 44 39263958 > Mobile : +91 9884040171 > Support : +91 9962007110 > OC : jothish.chokkalingam > Group mail:- Telstra.psm.tsd.tibco(a)accenture.com > > From: Josealf.rm [mailto:[email protected]] > Sent: Thursday, November 24, 2016 2:48 PM > To: Chokkalingam, Jothish <jothish.chokkalingam(a)accenture.com> > Cc: cbrowne(a)cbcs-usa.com; stunnel-users(a)stunnel.org > Subject: Re: [stunnel-users] Help in setting stunnel in server mode to over come TLSV2 compatibility > > Jothish, > > Stunnel in server mode is what you need, with 99.9% confidence. > > When you write: > > [https] > Accept=443 > Connect=local host:80 > Client=no > > Stunnnel will expect TLS connections on port 443 and will forward then to your normal web server running on loopback port 80. > > Is that clear? > > Regards, > Jose > > El 24/11/2016, a las 2:29 a.m., <jothish.chokkalingam(a)accenture.com> <jothish.chokkalingam(a)accenture.com> escribió: > > > Is there a way to forward a Secure connection from one port to non secure port using stunnel. I am googling but unable to find. If you have can you let me know > > Thanks and Regards, > Jothish > TIBCO TSD > Ph. : +91 44 39263958 > Mobile : +91 9884040171 > Support : +91 9962007110 > OC : jothish.chokkalingam > Group mail:- Telstra.psm.tsd.tibco(a)accenture.com > > From: stunnel-users [mailto:[email protected]] On Behalf Of Carter Browne > Sent: Wednesday, November 23, 2016 9:30 PM > To: stunnel-users(a)stunnel.org > Subject: Re: [stunnel-users] Help in setting stunnel in server mode to over come TLSV2 compatibility > > There are other tools for performing port forwarding with less overhead (I believe tappipe is one), although I make use stunnel to do this extensively. > > In order forward a secure connection from one port to another is a two step process with stunnel: > > A sample configuration segment would be: > > [SFDC reverse in] > > client = no > > accept = 8008 > > connect = localhost:48008 > > > [SFDC reverse out] > client = yes > accept = localhost:48008 > connect = localhost:8009 > > On 11/23/2016 10:18 AM, Rodney Lott wrote: > Hi, there. > > I'm no stunnel expert, but here's my $0.05 (we have no pennies in Canada anymore ;-) ): > - I would try including the key as well as the cert in your stunnel config > - I would enable debug on the openssl s_client call to see if it will indicate why it is reseting. Same with your SFDC client to get more info. > - Question: is the "WARNING: can't open config file" message below indicative of a permissions or path problem? > - Question: Is the stunnel cert and key compatible with the TIBCO server's certificate? They need to be using certs generated from the same key source, don't they? > - You might want to fix the SSL version in the stunnel config file (i.e. sslVersion = TLSv1.2) > > Good luck with your debugging. > > Rodney > > On 2016-11-22 07:43 PM, jothish.chokkalingam(a)accenture.com wrote: > HI all, > > There is a problem we have currently connecting tibco client to SFDC sever via TLS v1.2 and that’s solved by using stunnel in client mode. And the communication from SFDC client to tibco server applications w.r.t TLS V1.2 I am unable to solve using stunnel. Below is the configuration in stunnel in server end to divert the traffic from 8008 to 8009, can you help here with the logs is the stunnel configuration is correct or there any missed/need to alter. > > [SFDC reverse proxy test] > debug=7 > ;client = yes > accept = 8008àport used by sfdc client to connect to TIBCO server > connect = localhost:8009 àTibco server that’s running > cert = stunnel.pem > 2016.11.23 08:31:56 LOG7[118]: Service [SFDC reverse proxy test] started > 2016.11.23 08:31:56 LOG7[118]: Option TCP_NODELAY set on local socket > 2016.11.23 08:31:56 LOG5[118]: Service [SFDC reverse proxy test] accepted connection from 101.167.198.14:54477 > 2016.11.23 08:31:56 LOG6[118]: Peer certificate not required > 2016.11.23 08:31:56 LOG7[118]: SSL state (accept): before/accept initialization > 2016.11.23 08:31:56 LOG3[118]: SSL_accept: Peer suddenly disconnected > 2016.11.23 08:31:56 LOG5[118]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket > 2016.11.23 08:31:56 LOG7[118]: Local descriptor (FD=696) closed > 2016.11.23 08:31:56 LOG7[118]: Service [SFDC reverse proxy test] finished (0 left) > > PFB the openssl snap shot looks odd > C:\Program Files (x86)\stunnel\bin>openssl s_client -connect localhost:8008 -prexit -showcerts > WARNING: can't open config file: /devel/win32/openssl/openssl.cnf > CONNECTED(0000016C) > > Thanks and Regards, > Jothish > TIBCO TSD > Ph. : +91 44 39263958 > Mobile : +91 9884040171 > Support : +91 9962007110 > OC : jothish.chokkalingam > Group mail:- Telstra.psm.tsd.tibco(a)accenture.com > > > > This message is for the designated recipient only and may contain privileged, proprietary, or otherwise confidential information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the e-mail by you is prohibited. Where allowed by local law, electronic communications with Accenture and its affiliates, including e-mail and instant messaging (including content), may be scanned by our systems for the purposes of information security and assessment of internal compliance with Accenture policy. > ______________________________________________________________________________________ > > www.accenture.com > > > > > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)stunnel.org > https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users > > > > > > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)stunnel.org > https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users > > _______________________________________________ > stunnel-users mailing list > stunnel-users(a)stunnel.org > https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

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Help in setting stunnel in server mode to over come TLSV2 compatibility
by jothish.chokkalingam＠accenture.com 24 Nov '16

24 Nov '16

HI all, There is a problem we have currently connecting tibco client to SFDC sever via TLS v1.2 and that's solved by using stunnel in client mode. And the communication from SFDC client to tibco server applications w.r.t TLS V1.2 I am unable to solve using stunnel. Below is the configuration in stunnel in server end to divert the traffic from 8008 to 8009, can you help here with the logs is the stunnel configuration is correct or there any missed/need to alter. [SFDC reverse proxy test] debug=7 ;client = yes accept = 8008-->port used by sfdc client to connect to TIBCO server connect = localhost:8009 -->Tibco server that's running cert = stunnel.pem 2016.11.23 08:31:56 LOG7[118]: Service [SFDC reverse proxy test] started 2016.11.23 08:31:56 LOG7[118]: Option TCP_NODELAY set on local socket 2016.11.23 08:31:56 LOG5[118]: Service [SFDC reverse proxy test] accepted connection from 101.167.198.14:54477 2016.11.23 08:31:56 LOG6[118]: Peer certificate not required 2016.11.23 08:31:56 LOG7[118]: SSL state (accept): before/accept initialization 2016.11.23 08:31:56 LOG3[118]: SSL_accept: Peer suddenly disconnected 2016.11.23 08:31:56 LOG5[118]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2016.11.23 08:31:56 LOG7[118]: Local descriptor (FD=696) closed 2016.11.23 08:31:56 LOG7[118]: Service [SFDC reverse proxy test] finished (0 left) PFB the openssl snap shot looks odd C:\Program Files (x86)\stunnel\bin>openssl s_client -connect localhost:8008 -prexit -showcerts WARNING: can't open config file: /devel/win32/openssl/openssl.cnf CONNECTED(0000016C) Thanks and Regards, Jothish TIBCO TSD Ph. : +91 44 39263958 Mobile : +91 9884040171 Support : +91 9962007110 OC : jothish.chokkalingam Group mail:- Telstra.psm.tsd.tibco(a)accenture.com ________________________________ This message is for the designated recipient only and may contain privileged, proprietary, or otherwise confidential information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the e-mail by you is prohibited. Where allowed by local law, electronic communications with Accenture and its affiliates, including e-mail and instant messaging (including content), may be scanned by our systems for the purposes of information security and assessment of internal compliance with Accenture policy. ______________________________________________________________________________________ www.accenture.com

4 4

uninstall.exe
by Michael Curran 22 Nov '16

22 Nov '16

With the distrubuted version of stunnel, there is an uninstall.exe Are there any options for this uninstaller, so I can automate removal and upgrade processes ? Like a /quiet or /Q ?? Which uninstaller application is this based off of?

1 0

Connection failure on IPv4-only box with IPv6-address in RR DNS record
by Michael Weiser 18 Nov '16

18 Nov '16

Hi, the server I connect to using stunnel has just been upgraded to IPv6. In the process an AAAA record was added to its DNS entry. The box I run stunnel on is IPv4-only, meaning, the kernel does not have any IPv6 support at all. The DNS stub resolver is still looking for AAAA records though. Consequently stunnel connections now fail about half of the time with error: 2016.11.18 20:10:57 LOG3[ui]: remote socket: Address family not supported by protocol (97) >From looking at client.c I can see that stunnel supports trying all target addresses in turn but will bail if the socket cannot be created: for(ind_try=0; ind_try<c->connect_addr.num; ind_try++) { c->fd=s_socket(c->connect_addr.addr[ind_cur].sa.sa_family, SOCK_STREAM, 0, 1, "remote socket"); if(c->fd==INVALID_SOCKET) longjmp(c->err, 1); [...] if(s_connect(c, &c->connect_addr.addr[ind_cur], [...] continue; /* next IP */ } [...] return fd; /* success! */ So I guess the problem would go away if I enabled IPv6 in the kernel of my client box: s_socket() would succeed but connect() would fail with ENETUNREACH. But couldn't stunnel just continue with the next IP if s_socket() failed with EAFNOSUPPORT? -- Thanks, Michael

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Deactivate expiry date check, Have CA check with verify = 3
by Mark Shine 18 Nov '16

18 Nov '16

Hello, I would like to setup stunnel but the certificate from my other tunnel is expired. How would I tell stunnel to ignore verification of expiry date of the certificate coming from stunnel client mode to the stunnel server mode? I want to be able to verify the certificate but ignore the expiry date. Not disable cert check all the way I have a stunnel setup by someone else that has done this exact thing but I have no clue how they did it. Stunnel seems to use openssl for the verification so I guess the question should be how to bypass openssl expiry check. Please see the below link for my issue on stackexchange. http://unix.stackexchange.com/questions/323997/stunnel-how-to-ignore-the-ce… [http://cdn.sstatic.net/Sites/unix/img/[email protected]?v=32fb07f7ce26…]<http://unix.stackexchange.com/questions/323997/stunnel-how-to-ignore-the-ce…> Stunnel: How to ignore the cert expiry date<http://unix.stackexchange.com/questions/323997/stunnel-how-to-ignore-the-ce…> unix.stackexchange.com I would like to setup stunnel but the certificate from my other tunnel is expired. How would I tell stunnel to ignore verification of expiry date of the certificate coming from stunnel client mode ...

1 0

Windows builds
by Michael Curran 16 Nov '16

16 Nov '16

Hello -- Are there some solid instructions for building stunnel on windows? I am using Microsoft VS 2015 and the 64-bit compilers -- This is the basic error I am running into, but could be that stunnel wont work with 64-bit? C:\stunnel_build\stunnel-5.36.tar\stunnel-5.36\src>.\makew32.bat W32 ENVIRONMENT OK Microsoft (R) Program Maintenance Utility Version 14.00.24210.0 Copyright (C) Microsoft Corporation. All rights reserved. Detected target: win64 cl /MD /W3 /O2 /nologo /I"\devel\win64\openssl\include" /DUNICODE /D_UNICODE -Fo..\obj\win64\stunnel.obj -c ..\src\stunnel.c stunnel.c c:\stunnel_build\stunnel-5.36.tar\stunnel-5.36\src\common.h(414): fatal error C1083: Cannot open include file: 'openssl/opensslconf.h': No such file or directory NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\BIN\amd64\cl.EXE"' : return code '0x2' Stop.

2 2

Stunnel-5.x on windows 10
by Michael Curran 15 Nov '16

15 Nov '16

I have a method with VS to compile Stunnel as 64-bit for use with Windows Are there any decent instructions for compiling it as 64-bit? Michael Curran | Systems Architect Office: 614-568-2285 Mobile: 614-403-6320 ConnectSolutions | 126 Post St. Ste. 400 | San Francisco, CA 94108

1 0

Assistance needed debugging Stunnel AWS EC2 Interface
by Donald F. Coffin 15 Nov '16

15 Nov '16

I am using stunnel as a proxy to support SoapUI mock services which are used to test an SSL based application. The SoapUI and stunnel proxy are running on an AWS Ubuntu 14.04 EC2 Instance communicating to a Tomcat server running on a second AWS Ubuntu 14.04 EC2 Instance. The target application uses a wildcard SSL Certificate and works successfully when accessed using a desktop browser (Chrome or Firefox). The issue I am encountering is that the stunnel connection logs a "SSL closed on SSL_read" message as soon as the cipher suite is negotiated as shown in the following stunnel.log: 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Clients allowed=2000 2016.11.14 21:34:19 LOG5[5287:140430154716992]: stunnel 4.53 on x86_64-pc-linux-gnu platform 2016.11.14 21:34:19 LOG5[5287:140430154716992]: Compiled with OpenSSL 1.0.1e 11 Feb 2013 2016.11.14 21:34:19 LOG5[5287:140430154716992]: Running with OpenSSL 1.0.1f 6 Jan 2014 2016.11.14 21:34:19 LOG5[5287:140430154716992]: Update OpenSSL shared libraries or rebuild stunnel 2016.11.14 21:34:19 LOG5[5287:140430154716992]: Threading:PTHREAD SSL:+ENGINE+OCSP Auth:LIBWRAP Sockets:POLL+IPv6 2016.11.14 21:34:19 LOG5[5287:140430154716992]: Reading configuration from file /etc/stunnel/stunnel.conf 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Compression not enabled 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Snagged 64 random bytes from /home/ubuntu/.rnd 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Wrote 1024 new random bytes to /home/ubuntu/.rnd 2016.11.14 21:34:19 LOG7[5287:140430154716992]: PRNG seeded successfully 2016.11.14 21:34:19 LOG6[5287:140430154716992]: Initializing service section [resourceServer] 2016.11.14 21:34:19 LOG4[5287:140430154716992]: Insecure file permissions on /etc/stunnel/stunnel.pem 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Certificate: /etc/stunnel/stunnel.pem 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Certificate loaded 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Key file: /etc/stunnel/stunnel.pem 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Private key loaded 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Verify directory set to /etc/ssl/certs 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Added /etc/ssl/certs revocation lookup directory 2016.11.14 21:34:19 LOG7[5287:140430154716992]: SSL options set: 0x00000004 2016.11.14 21:34:19 LOG6[5287:140430154716992]: Initializing service section [tpserver] 2016.11.14 21:34:19 LOG4[5287:140430154716992]: Insecure file permissions on /etc/stunnel/stunnel.pem 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Certificate: /etc/stunnel/stunnel.pem 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Certificate loaded 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Key file: /etc/stunnel/stunnel.pem 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Private key loaded 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Verify directory set to /etc/ssl/certs 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Added /etc/ssl/certs revocation lookup directory 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Could not load DH parameters from /etc/stunnel/stunnel.pem 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Using hardcoded DH parameters 2016.11.14 21:34:19 LOG7[5287:140430154716992]: DH initialized with 2048-bit key 2016.11.14 21:34:19 LOG7[5287:140430154716992]: ECDH initialized with curve prime256v1 2016.11.14 21:34:19 LOG7[5287:140430154716992]: SSL options set: 0x00000004 2016.11.14 21:34:19 LOG5[5287:140430154716992]: Configuration successful 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Service [resourceServer] (FD=12) bound to 127.0.0.1:8080 2016.11.14 21:34:19 LOG7[5287:140430154716992]: Service [tpserver] (FD=13) bound to 127.0.0.1:8444 2016.11.14 21:34:19 LOG7[5293:140430154716992]: Created pid file /var/run/stunnel4.pid 2016.11.14 21:34:25 LOG7[5293:140430154716992]: Service [resourceServer] accepted (FD=3) from 127.0.0.1:41256 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Service [resourceServer] started 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Waiting for a libwrap process 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Acquired libwrap process #0 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Releasing libwrap process #0 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Released libwrap process #0 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Service [resourceServer] permitted by libwrap from 127.0.0.1:41256 2016.11.14 21:34:25 LOG5[5293:140430154827520]: Service [resourceServer] accepted connection from 127.0.0.1:41256 2016.11.14 21:34:25 LOG6[5293:140430154827520]: connect_blocking: connecting 52.43.245.161:8443 2016.11.14 21:34:25 LOG7[5293:140430154827520]: connect_blocking: s_poll_wait 52.43.245.161:8443: waiting 10 seconds 2016.11.14 21:34:25 LOG5[5293:140430154827520]: connect_blocking: connected 52.43.245.161:8443 2016.11.14 21:34:25 LOG5[5293:140430154827520]: Service [resourceServer] connected remote server from 172.31.44.97:34077 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Remote socket (FD=15) initialized 2016.11.14 21:34:25 LOG7[5293:140430154827520]: SNI: host name: 52.43.245.161 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Starting certificate verification: depth=2, /C=US/O=GeoTrust Inc./CN=GeoTrust Global CA 2016.11.14 21:34:25 LOG6[5293:140430154827520]: CERT: Verification not enabled 2016.11.14 21:34:25 LOG5[5293:140430154827520]: Certificate accepted: depth=2, /C=US/O=GeoTrust Inc./CN=GeoTrust Global CA 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Starting certificate verification: depth=1, /C=US/O=GeoTrust Inc./CN=RapidSSL SHA256 CA 2016.11.14 21:34:25 LOG6[5293:140430154827520]: CERT: Verification not enabled 2016.11.14 21:34:25 LOG5[5293:140430154827520]: Certificate accepted: depth=1, /C=US/O=GeoTrust Inc./CN=RapidSSL SHA256 CA 2016.11.14 21:34:25 LOG7[5293:140430154827520]: Starting certificate verification: depth=0, /CN=*.greenbuttonalliance.org 2016.11.14 21:34:25 LOG6[5293:140430154827520]: CERT: Verification not enabled 2016.11.14 21:34:25 LOG5[5293:140430154827520]: Certificate accepted: depth=0, /CN=*.greenbuttonalliance.org 2016.11.14 21:34:25 LOG6[5293:140430154827520]: SSL connected: new session negotiated 2016.11.14 21:34:25 LOG6[5293:140430154827520]: Negotiated TLSv1/SSLv3 ciphersuite: AES128-SHA (128-bit encryption) 2016.11.14 21:34:25 LOG6[5293:140430154827520]: Compression: null, expansion: null 2016.11.14 21:34:45 LOG7[5293:140430154827520]: SSL closed on SSL_read 2016.11.14 21:34:45 LOG7[5293:140430154827520]: Sent socket write shutdown 2016.11.14 21:34:56 LOG7[5293:140430154827520]: Socket closed on read 2016.11.14 21:34:56 LOG7[5293:140430154827520]: Sending close_notify alert 2016.11.14 21:34:56 LOG6[5293:140430154827520]: SSL_shutdown successfully sent close_notify alert 2016.11.14 21:34:56 LOG5[5293:140430154827520]: Connection closed: 342 byte(s) sent to SSL, 250 byte(s) sent to socket 2016.11.14 21:34:56 LOG7[5293:140430154827520]: Remote socket (FD=15) closed 2016.11.14 21:34:56 LOG7[5293:140430154827520]: Local socket (FD=3) closed 2016.11.14 21:34:56 LOG7[5293:140430154827520]: Service [resourceServer] finished (0 left) The stunnel.conf file contains the following configuration: ; ************************************************************************** ; * Service defaults may also be specified in individual service sections * ; ************************************************************************** CApath = /etc/ssl/certs ; ************************************************************************** ; * Logging * ; ************************************************************************** debug = 7 output = /home/ubuntu/Git/energyos/OpenESPI-GreenButtonCMDTest/SOAPUI/stunnel.log ; ************************************************************************** ; * Service definitions (at least one service has to be defined) * ; ************************************************************************** ; ************************************************************************** ; * Resource Server * ; ************************************************************************** [resourceServer] accept=localhost:8080 connect=52.43.245.161:8443 ciphers=AES128-SHA client = yes cert=/etc/stunnel/stunnel.pem verify=0 [tpserver] accept=127.0.0.1:8444 connect=localhost:8081 cert=/etc/stunnel/stunnel.pem verify=0 client=no ciphers=AES128-SHA Are there any additional stunnel logging options or debugging techniques you can recommend to help determine why the session is being closed? Does stunnel support wildcard based certificates (i.e. *.greenbuttonalliance.org)? Best regards, Don Donald F. Coffin Technical Manager Green Button Alliance 2335 Dunwoody Crossing Suite E Dunwoody, GA 30338-8221 http://www.greenbuttonalliance.org <http://www.greenbuttonalliance.org/> (949) 636-8571 Mobile

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rpmbuild errors using stunnel.spec
by Wiest, Damian 07 Nov '16

07 Nov '16

I noticed a few issues with the stunnel.spec file included with the distribution that I wanted to report. I'm building on an Amazon Linux host. There appears to be a bad date entry in the changelog section, warning: bogus date in %changelog: Sun Jun 24 2000 Brian Hatch <bri(a)stunnel.org> Sunday is the 25th? The stunnel.init and stunnel.logrotate files are being installed from the rpmbuild/SOURCES/ directory and not rpmbuild/BUILD/stunnel-5.37/tools/. Copying the files from the build area and retrying resolves this. stunnel.spec:Source1: %{name}.init stunnel.spec:Source2: %{name}.logrotate ... stunnel.spec:%{__install} -p -m0755 %{SOURCE1} $RPM_BUILD_ROOT%{_initrddir}/%{name} stunnel.spec:%{__install} -p -m0644 %{SOURCE2} $RPM_BUILD_ROOT%{_sysconfdir}/logrotate.d/%{name} + /usr/bin/install -p -m0755 /home/ec2-user/rpmbuild/SOURCES/stunnel.init /home/ec2-user/rpmbuild/BUILDROOT/stunnel-5.37-1.amzn1.x86_64/etc/rc.d/init.d/stunnel /usr/bin/install: cannot stat '/home/ec2-user/rpmbuild/SOURCES/stunnel.init': No such file or directory + /usr/bin/install -p -m0644 /home/ec2-user/rpmbuild/SOURCES/stunnel.logrotate /home/ec2-user/rpmbuild/BUILDROOT/stunnel-5.37-1.amzn1.x86_64/etc/logrotate.d/stunnel /usr/bin/install: cannot stat '/home/ec2-user/rpmbuild/SOURCES/stunnel.logrotate': No such file or directory rpmbuild also complains that the files under /usr/share/doc/stunnel/ are unpackaged. I added %{_docdir}/* at the end of the files section to correct this. -Damian -- Confidentiality Notice: This e-mail transmission may contain confidential or legally privileged information that is intended only for the individual or entity named in the e-mail address. If you have received this communication in error, please notify me by return e-mail, and destroy this communication and all copies thereof, including any attachments. Apervita ® is a registered trademark of Apervita Inc.

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Bulk Requests - Stunnel throwing exceptions
by Lakshmi Narayana Lanka 03 Nov '16

03 Nov '16

Hello, I'm using Stunnel infront of a TCP/IP connection. When we receive bulk requests simultaneously it starts throwing exceptions. Is it something by design with Stunnel? -- Thanks & Regards, Lakshmi N Lanka

2 4

Use SNI
by Benjamin Hartwich 31 Oct '16

31 Oct '16

Hi, I´ve found the SNI parameter at stunnel, but it doesn´t work at my Ubuntu 16.04. My goal is, to use one dfn cert for the stunnel cert, which has 4 hostnames. This cert is on both servers. At the client server this cert works, because at the cert this is first hostname. At the second server I use the same cert, but it can´t be verified, because stunnel doesn´t recognize the correct hostname from the cert. Can anyone send me an example for a working SNI configuration? My Configs: Server one: client = yes cert = /etc/stunnel/cert.pem service = test debug = debug output = /var/log/stunnel4/stunnel.log foreground = no sslVersion = TLSv1 options = NO_SSLv3 options = NO_SSLv2 CAfile = /etc/ssl/web/chain.pem verify = 2 socket = r:TCP_NODELAY=1 [app1] accept = localhost:8090 connect = 10.1.2.1:8085´ ----- Server 2 (fails): client = no cert = /etc/stunnel/cert.pem service = test debug = debug output = /var/log/stunnel4/stunnel.log sslVersion = TLSv1 options = NO_SSLv3 options = NO_SSLv2 foreground = no CAfile = /etc/ssl/web/chain.pem verify = 2 socket = l:TCP_NODELAY=1 [ajp] accept = 8085 connect = 127.0.0.1:8009 --- Error: 2016.10.31 15:01:40 LOG7[9]: SNI: no virtual services defined 2016.10.31 15:01:40 LOG4[9]: CERT: Pre-verification error: unsupported certificate purpose Regards, Benjamin Hartwich Referat Basisdienste Zentrum für Informationstechnologie und Medienmanagement Universität Passau Innstr. 33, 94032 Passau Telefon +49 (0)851/509-3285, Telefax +49 (0)851/509-1802 E-Mail: benjamin.hartwich(a)uni-passau.de

1 0

Running Stunnel 5.23 as multiple windows services
by David Jones 25 Oct '16

25 Oct '16

Hi, I'm trying to run stunnel as a windows service. I have used the stunnel -install and one service has successfully been setup. We now have a need to run a second instance of stunnel and so that we are able to stop/start this instance and not affect the connectivity of the other one we would like to install it as a separate service. On an older version of stunnel we simply named the stunnel.exe differently and it ran both services separately. But with 5.23 it is not allowing us to do so. Coming up the error "CreateService: error 1073: The specified service already exists". I've tried adding service = into the .conf file and also using service= on the command line for the install but nothing works. So what have I missed? Thanks David Config: Service = Stunnel_TLS_Generic CApath = ./ debug=7 #debug = 1 output = TLS_Generic.log # Use it for client mode client = yes # Service-level configuration [Service_Name] options = NO_SSLv2 options = NO_SSLv3 sslVersion = TLSv1 accept = 20002 connect = URLtoserver:443

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Re: [stunnel-users] JHH re: Server down? [GishPuppy]
by gmane.bl4＠gishpuppy.com 20 Oct '16

20 Oct '16

John H Hoffmann wrote: > upgraded to latest sTunnel v 5.36. > > In restarting sTunnel I immediately got a > 'server down' error > > [ ] Service [pop3s] (FD=432) bound to 0.0.0.0:995 > > > [!] bind: Permission denied (WSAEACCES) (10013) > > [!] Error binding service [comcast-pop3] to 127.0.0.1:995 > You probably have in the stunnel.conf something similar to: [pop3s] accept=995 {...} [comcast-pop3] accept=127.0.0.1:995 {...} accept=995 == 0.0.0.0:995 == (all localhost IPv4 addresses):995 Which includes 127.0.0.1:995 When the [comcast-pop3] service tries to bind to port 995 it fails because it is already bound at the [pop3s] service. Gishpuppy | To change the delivery settings for this email, click here: http://www.gishpuppy.com/cgi-bin/[email protected]

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JHH re: Server down?
by John H Hoffmann | 847.998.6198 18 Oct '16

18 Oct '16

Hi .. I have been having spotty access to my main ISP email account the last two days so I upgraded to latest sTunnel v 5.36. I use sTunnel to help get emails from my ISP, Comcast, to load into an older version of GoldMine CRM. sTunnel has worked like a charm since 09/2013. In restarting sTunnel I immediately got a 'server down' error, log included below. Ideas? Suggestions? [ ] Cron thread initialized [ ] Running on Windows 6.1 [ ] No limit detected for the number of clients [.] stunnel 5.36 on x86-pc-msvc-1500 platform [.] Compiled/running with OpenSSL 1.0.2i-fips 22 Sep 2016 [.] Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI [ ] errno: (*_errno()) [ ] GUI message loop initialized [ ] Running on Windows 6.1 [.] Reading configuration from file stunnel.conf [.] UTF-8 byte order mark not detected [.] FIPS mode disabled [ ] Compression disabled [ ] Snagged 64 random bytes from C:/.rnd [ ] Wrote 1024 new random bytes to C:/.rnd [ ] PRNG seeded successfully [ ] Initializing service [pop3s] [ ] Loading certificate from file: stunnel.pem [ ] Certificate loaded from file: stunnel.pem [ ] Loading private key from file: stunnel.pem [ ] Private key loaded from file: stunnel.pem [ ] Private key check succeeded [ ] DH initialization [ ] Could not load DH parameters from stunnel.pem [ ] Using dynamic DH parameters [ ] ECDH initialization [ ] ECDH initialized with curve prime256v1 [ ] SSL options: 0x03004004 (+0x03004000, -0x00000000) [ ] Initializing service [imaps] [ ] Loading certificate from file: stunnel.pem [ ] Certificate loaded from file: stunnel.pem [ ] Loading private key from file: stunnel.pem [ ] Private key loaded from file: stunnel.pem [ ] Private key check succeeded [ ] DH initialization [ ] Could not load DH parameters from stunnel.pem [ ] Using dynamic DH parameters [ ] ECDH initialization [ ] ECDH initialized with curve prime256v1 [ ] SSL options: 0x03004004 (+0x03004000, -0x00000000) [ ] Initializing service [ssmtp] [ ] Loading certificate from file: stunnel.pem [ ] Certificate loaded from file: stunnel.pem [ ] Loading private key from file: stunnel.pem [ ] Private key loaded from file: stunnel.pem [ ] Private key check succeeded [ ] DH initialization [ ] Could not load DH parameters from stunnel.pem [ ] Using dynamic DH parameters [ ] ECDH initialization [ ] ECDH initialized with curve prime256v1 [ ] SSL options: 0x03004004 (+0x03004000, -0x00000000) [ ] Initializing service [comcast-pop3] [ ] Loading certificate from file: stunnel.pem [ ] Certificate loaded from file: stunnel.pem [ ] Loading private key from file: stunnel.pem [ ] Private key loaded from file: stunnel.pem [ ] Private key check succeeded [:] Service [comcast-pop3] needs authentication to prevent MITM attacks [ ] SSL options: 0x03000004 (+0x03000000, -0x00000000) [ ] Initializing service [comcast-smtp] [ ] Loading certificate from file: stunnel.pem [ ] Certificate loaded from file: stunnel.pem [ ] Loading private key from file: stunnel.pem [ ] Private key loaded from file: stunnel.pem [ ] Private key check succeeded [:] Service [comcast-smtp] needs authentication to prevent MITM attacks [ ] SSL options: 0x03000004 (+0x03000000, -0x00000000) [.] Configuration successful [ ] Listening file descriptor created (FD=432) [ ] Option SO_EXCLUSIVEADDRUSE set on accept socket [ ] Service [pop3s] (FD=432) bound to 0.0.0.0:995 [ ] Listening file descriptor created (FD=436) [ ] Option SO_EXCLUSIVEADDRUSE set on accept socket [ ] Service [imaps] (FD=436) bound to 0.0.0.0:993 [ ] Listening file descriptor created (FD=440) [ ] Option SO_EXCLUSIVEADDRUSE set on accept socket [ ] Service [ssmtp] (FD=440) bound to 0.0.0.0:465 [ ] Listening file descriptor created (FD=444) [ ] Option SO_EXCLUSIVEADDRUSE set on accept socket [!] bind: Permission denied (WSAEACCES) (10013) [!] Error binding service [comcast-pop3] to 127.0.0.1:995 [ ] Closing service [pop3s] [ ] Service [pop3s] closed (FD=432) [ ] Service [pop3s] closed [ ] Closing service [imaps] [ ] Service [imaps] closed (FD=436) [ ] Service [imaps] closed [ ] Closing service [ssmtp] [ ] Service [ssmtp] closed (FD=440) [ ] Service [ssmtp] closed [ ] Closing service [comcast-pop3] [ ] Service [comcast-pop3] closed [ ] Closing service [comcast-smtp] [ ] Service [comcast-smtp] closed [!] Server is down Respectfully, John John H Hoffmann

2 1

Stunnel stops on Windows Server 2012
by Sam Ash 03 Oct '16

03 Oct '16

I've upgraded Stunnel from 5.35 to 5.36 on a server running windows server 2012. Since the upgrade it appears to stop running once i log out. I installed it as a service and set the service start to automatic. It has no problems running when someone is logged into the server. I'm not sure what i changed when i updated the version. Thanks

1 0

No cert?
by Dave Gradwell 27 Sep '16

27 Sep '16

Is there any way to configure a Stunnel server so that it doesn’t require a cert at all? I implement peer authentication using other means; I just want session encryption from Stunnel. Ideally, I’d like keys to be generated on-the-fly for each new connection. I don’t mind if this takes a few seconds… Thanks, Dave.

1 0

Re: [stunnel-users] Hangs when connecting -- advice pls
by Scott McKeown 21 Sep '16

21 Sep '16

Hi Guys, To me this looks like a cipher issue. There are a few options that you can try to resolve this if it is. I would try adding the following lines into your STunnel Configuration file: delay = yes options = NO_SSLv2 options = NO_SSLv3 options = NO_TLSv1 options = CIPHER_SERVER_PREFERENCE options = DONT_INSERT_EMPTY_FRAGMENTS Delay will delay and DNS lookups that maybe actioned by the request (not normally needed but I always include if for sanity sake) The three 'options' sections turn off all the known problematic cipher lists if you need a key that is in one of these block feel free to remove that directive but I think a good start would be to leave the 'NO_SSLv3' option in place The 'CIPHER_SERVER_PREFERENCE' option will make set whether the client is allowed to renegotiat the ciphers that are to be used between the client and the server process. And finally 'DONT_INSERT_EMPTY_FRAGMENTS' will mitigate an issue in the CBC ciphers that was in the SSLv3 and TLS1.0 cipher lists again I only include it for sanity sake now but its better to have than to go without. -- With Kind Regards. Scott McKeown Loadbalancer.org http://www.loadbalancer.org Tel (UK) - +44 (0) 3303801064 (24x7) Tel (US) - +1 888.867.9504 (Toll Free)(24x7)

2 1

Re: [stunnel-users] stunnel-users Digest, Vol 146, Issue 10
by Hon Quach 16 Sep '16

16 Sep '16

Can I be please removed from the mailing list? Sent from my iPhone > On Sep 16, 2016, at 12:14 PM, stunnel-users-request(a)stunnel.org wrote: > > Send stunnel-users mailing list submissions to > stunnel-users(a)stunnel.org > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users > or, via email, send a message with subject or body 'help' to > stunnel-users-request(a)stunnel.org > > You can reach the person managing the list at > stunnel-users-owner(a)stunnel.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of stunnel-users digest..." > > > Today's Topics: > > 1. Re: compilation error with stunnel-5.35 (Josealf.rm) > 2. Re: compilation error with stunnel-5.35 (Viorel Panaite) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 16 Sep 2016 13:04:09 -0500 > From: "Josealf.rm" <josealf(a)rocketmail.com> > To: Viorel Panaite <Viorel.Panaite(a)tecsys.com> > Cc: "stunnel-users(a)stunnel.org" <stunnel-users(a)stunnel.org> > Subject: Re: [stunnel-users] compilation error with stunnel-5.35 > Message-ID: <6CE9A3F0-EE74-4CF0-ACCE-C5941B6B40A2(a)rocketmail.com> > Content-Type: text/plain; charset="utf-8" > > > Visorel, > > Did you compile OpenSSL yourself? Did you enable shared library support? > Maybe you system is picking system installed OpenSSL headers (0.9.8) instead of the new ones. > > Regards > Jose > > > Enviado desde mi iPhone >> El 16/09/2016, a las 9:39 a.m., Viorel Panaite <Viorel.Panaite(a)tecsys.com> escribió: >> >> I downloaded stunnel-5.35 and I’m trying to compile using openssl-1.0.2h on RedHat EL linux 5.4 >> >> I get this error when I’m trying to compile them together, >> >> Configure log >> ./configure --prefix=/apps/stunnel/535 --with-ssl=/apps/openssl/1.0.2h/ >> ……………………. >> hecking for broken poll() implementation... no >> checking for pipe2... no >> checking for accept4... no >> configure: **************************************** optional features >> checking whether to enable IPv6 support... yes (default) >> checking whether to enable FIPS support... autodetecting >> checking whether to enable systemd socket activation support... autodetecting >> checking for library containing sd_listen_fds... no >> configure: systemd library not found >> checking whether to enable TCP wrappers support... autodetecting >> checking for hosts_access in -lwrap... yes >> configure: libwrap support enabled >> configure: **************************************** SSL >> checking for compiler sysroot... / >> checking for SSL directory... /apps/openssl/1.0.2h/ >> checking for FIPS_mode_set... yes >> configure: FIPS support enabled >> configure: **************************************** write the results >> checking that generated files are newer than configure... done >> configure: creating ./config.status >> config.status: creating Makefile >> config.status: creating src/Makefile >> config.status: creating doc/Makefile >> config.status: creating tools/Makefile >> config.status: creating src/config.h >> config.status: src/config.h is unchanged >> config.status: executing depfiles commands >> config.status: executing libtool commands >> configure: **************************************** success >> >> make log >> >> [root@mybox stunnel-5.35]# make >> Making all in src >> make[1]: Entering directory `/apps/stunnel/stunnel-5.35/src' >> make all-am >> make[2]: Entering directory `/apps/stunnel/stunnel-5.35/src' >> CCLD stunnel >> /usr/bin/ld: skipping incompatible /apps/openssl/1.0.2h//lib/libssl.a when searching for -lssl >> /usr/bin/ld: skipping incompatible /apps/openssl/1.0.2h//lib/libcrypto.a when searching for -lcrypto >> stunnel-client.o: In function `client_run': >> /apps/stunnel/stunnel-5.35/src/client.c:201: undefined reference to `ERR_remove_thread_state' >> stunnel-options.o: In function `parse_service_option': >> /apps/stunnel/stunnel-5.35/src/options.c:2669: undefined reference to `TLSv1_2_client_method' >> /apps/stunnel/stunnel-5.35/src/options.c:2670: undefined reference to `TLSv1_2_server_method' >> /apps/stunnel/stunnel-5.35/src/options.c:2662: undefined reference to `TLSv1_1_client_method' >> /apps/stunnel/stunnel-5.35/src/options.c:2663: undefined reference to `TLSv1_1_server_method' >> stunnel-ctx.o: In function `auth_init': >> /apps/stunnel/stunnel-5.35/src/ctx.c:442: undefined reference to `SSL_CTX_set_psk_server_callback' >> stunnel-ctx.o: In function `context_init': >> /apps/stunnel/stunnel-5.35/src/ctx.c:133: undefined reference to `SSL_CTX_set_client_cert_engine' >> stunnel-ctx.o: In function `auth_init': >> /apps/stunnel/stunnel-5.35/src/ctx.c:440: undefined reference to `SSL_CTX_set_psk_client_callback' >> stunnel-ctx.o: In function `conf_init': >> /apps/stunnel/stunnel-5.35/src/ctx.c:376: undefined reference to `SSL_CONF_CTX_new' >> /apps/stunnel/stunnel-5.35/src/ctx.c:381: undefined reference to `SSL_CONF_CTX_set_ssl_ctx' >> /apps/stunnel/stunnel-5.35/src/ctx.c:382: undefined reference to `SSL_CONF_CTX_set_flags' >> /apps/stunnel/stunnel-5.35/src/ctx.c:383: undefined reference to `SSL_CONF_CTX_set_flags' >> /apps/stunnel/stunnel-5.35/src/ctx.c:385: undefined reference to `SSL_CONF_CTX_set_flags' >> /apps/stunnel/stunnel-5.35/src/ctx.c:392: undefined reference to `SSL_CONF_cmd' >> /apps/stunnel/stunnel-5.35/src/ctx.c:420: undefined reference to `SSL_CONF_CTX_finish' >> /apps/stunnel/stunnel-5.35/src/ctx.c:422: undefined reference to `SSL_CONF_CTX_free' >> stunnel-ctx.o: In function `ecdh_init': >> /apps/stunnel/stunnel-5.35/src/ctx.c:351: undefined reference to `EC_KEY_new_by_curve_name' >> /apps/stunnel/stunnel-5.35/src/ctx.c:359: undefined reference to `EC_KEY_free' >> stunnel-ctx.o: In function `conf_init': >> /apps/stunnel/stunnel-5.35/src/ctx.c:414: undefined reference to `SSL_CONF_CTX_free' >> /apps/stunnel/stunnel-5.35/src/ctx.c:409: undefined reference to `SSL_CONF_CTX_free' >> /apps/stunnel/stunnel-5.35/src/ctx.c:425: undefined reference to `SSL_CONF_CTX_free' >> stunnel-ctx.o: In function `servername_cb': >> /apps/stunnel/stunnel-5.35/src/ctx.c:229: undefined reference to `SSL_get_servername' >> /apps/stunnel/stunnel-5.35/src/ctx.c:253: undefined reference to `SSL_set_SSL_CTX' >> stunnel-verify.o: In function `ocsp_request': >> /apps/stunnel/stunnel-5.35/src/verify.c:499: undefined reference to `OCSP_CERTID_dup' >> stunnel-verify.o: In function `ocsp_get_response': >> /apps/stunnel/stunnel-5.35/src/verify.c:614: undefined reference to `OCSP_sendreq_new' >> /apps/stunnel/stunnel-5.35/src/verify.c:625: undefined reference to `OCSP_REQ_CTX_add1_header' >> /apps/stunnel/stunnel-5.35/src/verify.c:629: undefined reference to `OCSP_REQ_CTX_add1_header' >> /apps/stunnel/stunnel-5.35/src/verify.c:634: undefined reference to `OCSP_REQ_CTX_set1_req' >> /apps/stunnel/stunnel-5.35/src/verify.c:641: undefined reference to `OCSP_sendreq_nbio' >> /apps/stunnel/stunnel-5.35/src/verify.c:668: undefined reference to `OCSP_REQ_CTX_free' >> stunnel-verify.o: In function `cert_check_subject': >> /apps/stunnel/stunnel-5.35/src/verify.c:299: undefined reference to `X509_check_host' >> stunnel-verify.o: In function `ocsp_check': >> /apps/stunnel/stunnel-5.35/src/verify.c:457: undefined reference to `X509_get1_ocsp' >> stunnel-verify.o: In function `cert_check_subject': >> /apps/stunnel/stunnel-5.35/src/verify.c:312: undefined reference to `X509_check_email' >> /apps/stunnel/stunnel-5.35/src/verify.c:323: undefined reference to `X509_check_ip_asc' >> stunnel-verify.o: In function `cert_check_local': >> /apps/stunnel/stunnel-5.35/src/verify.c:356: undefined reference to `X509_STORE_get1_certs' >> stunnel-sthreads.o: In function `sthreads_init': >> /apps/stunnel/stunnel-5.35/src/sthreads.c:287: undefined reference to `CRYPTO_THREADID_set_callback' >> stunnel-sthreads.o: In function `threadid_func': >> /apps/stunnel/stunnel-5.35/src/sthreads.c:268: undefined reference to `CRYPTO_THREADID_set_numeric' >> collect2: ld returned 1 exit status >> make[2]: *** [stunnel] Error 1 >> make[2]: Leaving directory `/apps/stunnel/stunnel-5.35/src' >> make[1]: *** [all] Error 2 >> make[1]: Leaving directory `/apps/stunnel/stunnel-5.35/src' >> make: *** [all-recursive] Error 1 >> >> Thanks for your help. >> >> >> _______________________________________________ >> stunnel-users mailing list >> stunnel-users(a)stunnel.org >> https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users >

2 1

compilation error with stunnel-5.35
by Viorel Panaite 16 Sep '16

16 Sep '16

I downloaded stunnel-5.35 and I'm trying to compile using openssl-1.0.2h on RedHat EL linux 5.4 I get this error when I'm trying to compile them together, Configure log ./configure --prefix=/apps/stunnel/535 --with-ssl=/apps/openssl/1.0.2h/ ......................... hecking for broken poll() implementation... no checking for pipe2... no checking for accept4... no configure: **************************************** optional features checking whether to enable IPv6 support... yes (default) checking whether to enable FIPS support... autodetecting checking whether to enable systemd socket activation support... autodetecting checking for library containing sd_listen_fds... no configure: systemd library not found checking whether to enable TCP wrappers support... autodetecting checking for hosts_access in -lwrap... yes configure: libwrap support enabled configure: **************************************** SSL checking for compiler sysroot... / checking for SSL directory... /apps/openssl/1.0.2h/ checking for FIPS_mode_set... yes configure: FIPS support enabled configure: **************************************** write the results checking that generated files are newer than configure... done configure: creating ./config.status config.status: creating Makefile config.status: creating src/Makefile config.status: creating doc/Makefile config.status: creating tools/Makefile config.status: creating src/config.h config.status: src/config.h is unchanged config.status: executing depfiles commands config.status: executing libtool commands configure: **************************************** success make log [root@mybox stunnel-5.35]# make Making all in src make[1]: Entering directory `/apps/stunnel/stunnel-5.35/src' make all-am make[2]: Entering directory `/apps/stunnel/stunnel-5.35/src' CCLD stunnel /usr/bin/ld: skipping incompatible /apps/openssl/1.0.2h//lib/libssl.a when searching for -lssl /usr/bin/ld: skipping incompatible /apps/openssl/1.0.2h//lib/libcrypto.a when searching for -lcrypto stunnel-client.o: In function `client_run': /apps/stunnel/stunnel-5.35/src/client.c:201: undefined reference to `ERR_remove_thread_state' stunnel-options.o: In function `parse_service_option': /apps/stunnel/stunnel-5.35/src/options.c:2669: undefined reference to `TLSv1_2_client_method' /apps/stunnel/stunnel-5.35/src/options.c:2670: undefined reference to `TLSv1_2_server_method' /apps/stunnel/stunnel-5.35/src/options.c:2662: undefined reference to `TLSv1_1_client_method' /apps/stunnel/stunnel-5.35/src/options.c:2663: undefined reference to `TLSv1_1_server_method' stunnel-ctx.o: In function `auth_init': /apps/stunnel/stunnel-5.35/src/ctx.c:442: undefined reference to `SSL_CTX_set_psk_server_callback' stunnel-ctx.o: In function `context_init': /apps/stunnel/stunnel-5.35/src/ctx.c:133: undefined reference to `SSL_CTX_set_client_cert_engine' stunnel-ctx.o: In function `auth_init': /apps/stunnel/stunnel-5.35/src/ctx.c:440: undefined reference to `SSL_CTX_set_psk_client_callback' stunnel-ctx.o: In function `conf_init': /apps/stunnel/stunnel-5.35/src/ctx.c:376: undefined reference to `SSL_CONF_CTX_new' /apps/stunnel/stunnel-5.35/src/ctx.c:381: undefined reference to `SSL_CONF_CTX_set_ssl_ctx' /apps/stunnel/stunnel-5.35/src/ctx.c:382: undefined reference to `SSL_CONF_CTX_set_flags' /apps/stunnel/stunnel-5.35/src/ctx.c:383: undefined reference to `SSL_CONF_CTX_set_flags' /apps/stunnel/stunnel-5.35/src/ctx.c:385: undefined reference to `SSL_CONF_CTX_set_flags' /apps/stunnel/stunnel-5.35/src/ctx.c:392: undefined reference to `SSL_CONF_cmd' /apps/stunnel/stunnel-5.35/src/ctx.c:420: undefined reference to `SSL_CONF_CTX_finish' /apps/stunnel/stunnel-5.35/src/ctx.c:422: undefined reference to `SSL_CONF_CTX_free' stunnel-ctx.o: In function `ecdh_init': /apps/stunnel/stunnel-5.35/src/ctx.c:351: undefined reference to `EC_KEY_new_by_curve_name' /apps/stunnel/stunnel-5.35/src/ctx.c:359: undefined reference to `EC_KEY_free' stunnel-ctx.o: In function `conf_init': /apps/stunnel/stunnel-5.35/src/ctx.c:414: undefined reference to `SSL_CONF_CTX_free' /apps/stunnel/stunnel-5.35/src/ctx.c:409: undefined reference to `SSL_CONF_CTX_free' /apps/stunnel/stunnel-5.35/src/ctx.c:425: undefined reference to `SSL_CONF_CTX_free' stunnel-ctx.o: In function `servername_cb': /apps/stunnel/stunnel-5.35/src/ctx.c:229: undefined reference to `SSL_get_servername' /apps/stunnel/stunnel-5.35/src/ctx.c:253: undefined reference to `SSL_set_SSL_CTX' stunnel-verify.o: In function `ocsp_request': /apps/stunnel/stunnel-5.35/src/verify.c:499: undefined reference to `OCSP_CERTID_dup' stunnel-verify.o: In function `ocsp_get_response': /apps/stunnel/stunnel-5.35/src/verify.c:614: undefined reference to `OCSP_sendreq_new' /apps/stunnel/stunnel-5.35/src/verify.c:625: undefined reference to `OCSP_REQ_CTX_add1_header' /apps/stunnel/stunnel-5.35/src/verify.c:629: undefined reference to `OCSP_REQ_CTX_add1_header' /apps/stunnel/stunnel-5.35/src/verify.c:634: undefined reference to `OCSP_REQ_CTX_set1_req' /apps/stunnel/stunnel-5.35/src/verify.c:641: undefined reference to `OCSP_sendreq_nbio' /apps/stunnel/stunnel-5.35/src/verify.c:668: undefined reference to `OCSP_REQ_CTX_free' stunnel-verify.o: In function `cert_check_subject': /apps/stunnel/stunnel-5.35/src/verify.c:299: undefined reference to `X509_check_host' stunnel-verify.o: In function `ocsp_check': /apps/stunnel/stunnel-5.35/src/verify.c:457: undefined reference to `X509_get1_ocsp' stunnel-verify.o: In function `cert_check_subject': /apps/stunnel/stunnel-5.35/src/verify.c:312: undefined reference to `X509_check_email' /apps/stunnel/stunnel-5.35/src/verify.c:323: undefined reference to `X509_check_ip_asc' stunnel-verify.o: In function `cert_check_local': /apps/stunnel/stunnel-5.35/src/verify.c:356: undefined reference to `X509_STORE_get1_certs' stunnel-sthreads.o: In function `sthreads_init': /apps/stunnel/stunnel-5.35/src/sthreads.c:287: undefined reference to `CRYPTO_THREADID_set_callback' stunnel-sthreads.o: In function `threadid_func': /apps/stunnel/stunnel-5.35/src/sthreads.c:268: undefined reference to `CRYPTO_THREADID_set_numeric' collect2: ld returned 1 exit status make[2]: *** [stunnel] Error 1 make[2]: Leaving directory `/apps/stunnel/stunnel-5.35/src' make[1]: *** [all] Error 2 make[1]: Leaving directory `/apps/stunnel/stunnel-5.35/src' make: *** [all-recursive] Error 1 Thanks for your help.

2 2

Hangs when connecting -- advice pls
by Dave Gradwell 14 Sep '16

14 Sep '16

My Stunnel client gets to this point, then hangs indefinitely: SSL state (connect): SSLv2/v3 write client hello A Is this a fault with Stunnel or is it something I’m doing wrong Full client-side output: """"""""""""""""""" Last login: Wed Sep 14 06:50:40 on ttys004 Daves-MBP-2016:~ dave$ /Users/dave/Desktop/stunnel-test/stunnel /Users/dave/Desktop/stunnel-test/stunnel-sender.conf 2016.09.14 06:54:35 LOG7[ui]: Clients allowed=125 2016.09.14 06:54:35 LOG7[cron]: Cron thread initialized 2016.09.14 06:54:35 LOG5[ui]: stunnel 5.35 on x86_64-apple-darwin15.4.0 platform 2016.09.14 06:54:35 LOG5[ui]: Compiled with OpenSSL 0.9.8zd 8 Jan 2015 2016.09.14 06:54:35 LOG5[ui]: Running with OpenSSL 0.9.8zh 14 Jan 2016 2016.09.14 06:54:35 LOG5[ui]: Update OpenSSL shared libraries or rebuild stunnel 2016.09.14 06:54:35 LOG5[ui]: Threading:PTHREAD Sockets:POLL,IPv6 TLS:ENGINE,OCSP,SNI 2016.09.14 06:54:35 LOG7[ui]: errno: (*__error()) 2016.09.14 06:54:35 LOG5[ui]: Reading configuration from file /Users/dave/Desktop/stunnel-test/stunnel-sender.conf 2016.09.14 06:54:35 LOG5[ui]: UTF-8 byte order mark not detected 2016.09.14 06:54:35 LOG7[ui]: Compression disabled 2016.09.14 06:54:35 LOG7[ui]: Snagged 64 random bytes from /Users/dave/.rnd 2016.09.14 06:54:35 LOG7[ui]: Wrote 1024 new random bytes to /Users/dave/.rnd 2016.09.14 06:54:35 LOG7[ui]: PRNG seeded successfully 2016.09.14 06:54:35 LOG6[ui]: Initializing inetd mode configuration 2016.09.14 06:54:35 LOG6[ui]: Loading certificate from file: /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG6[ui]: Certificate loaded from file: /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG6[ui]: Loading private key from file: /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG4[ui]: Insecure file permissions on /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG6[ui]: Private key loaded from file: /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG7[ui]: Private key check succeeded 2016.09.14 06:54:35 LOG4[ui]: Service [stunnel] needs authentication to prevent MITM attacks 2016.09.14 06:54:35 LOG7[ui]: SSL options: 0x03000004 (+0x03000000, -0x00000000) 2016.09.14 06:54:35 LOG5[ui]: Configuration successful 2016.09.14 06:54:35 LOG7[ui]: Service [stunnel] started 2016.09.14 06:54:35 LOG5[ui]: Service [stunnel] accepted connection 2016.09.14 06:54:35 LOG6[ui]: failover: round-robin, starting at entry #0 2016.09.14 06:54:35 LOG6[ui]: s_connect: connecting ::1:874 2016.09.14 06:54:35 LOG7[ui]: s_connect: s_poll_wait ::1:874: waiting 10 seconds 2016.09.14 06:54:35 LOG5[ui]: s_connect: connected ::1:874 2016.09.14 06:54:35 LOG5[ui]: Service [stunnel] connected remote server from ::1:51362 2016.09.14 06:54:35 LOG7[ui]: Option TCP_NODELAY set on remote socket 2016.09.14 06:54:35 LOG7[ui]: Remote descriptor (FD=3) initialized 2016.09.14 06:54:35 LOG6[ui]: SNI: sending servername: localhost 2016.09.14 06:54:35 LOG6[ui]: Peer certificate not required 2016.09.14 06:54:35 LOG7[ui]: SSL state (connect): before/connect initialization 2016.09.14 06:54:35 LOG7[ui]: SSL state (connect): SSLv2/v3 write client hello A ^C Daves-MBP-2016:~ dave$ """"""""""""""""""" My stunnel-sender.conf: """"""""""""""""""" debug = 7 output = /Users/dave/Desktop/stunnel-test/sender-stunnel-output.log foreground = yes client = yes connect = localhost:874 cert = /Users/dave/Desktop/stunnel-test/cert.pem verify = 0 """"""""""""""""""" My stunnel-receiver.conf: """"""""""""""""""" debug = 7 output = /Users/dave/Desktop/stunnel-test/receiver-stunnels-output.log pid = /Users/dave/Desktop/stunnel-test/stunnel-rsyncd-stunnels.pid cert = /Users/dave/Desktop/stunnel-test/cert.pem verify = 0 delay = yes exec = /Users/dave/Desktop/stunnel-test/rsync execArgs = -vvvv --daemon --server --config=/Users/dave/Desktop/stunnel-test/stunnel-rsyncd.conf . foreground = yes client = no """"""""""""""""""" My receiver-error.log: """"""""""""""""""" 2016.09.14 06:54:35 LOG7[ui]: Clients allowed=125 2016.09.14 06:54:35 LOG7[cron]: Cron thread initialized 2016.09.14 06:54:35 LOG5[ui]: stunnel 5.35 on x86_64-apple-darwin15.4.0 platform 2016.09.14 06:54:35 LOG5[ui]: Compiled with OpenSSL 0.9.8zd 8 Jan 2015 2016.09.14 06:54:35 LOG5[ui]: Running with OpenSSL 0.9.8zh 14 Jan 2016 2016.09.14 06:54:35 LOG5[ui]: Update OpenSSL shared libraries or rebuild stunnel 2016.09.14 06:54:35 LOG5[ui]: Threading:PTHREAD Sockets:POLL,IPv6 TLS:ENGINE,OCSP,SNI 2016.09.14 06:54:35 LOG7[ui]: errno: (*__error()) 2016.09.14 06:54:35 LOG5[ui]: Reading configuration from file /Users/dave/Desktop/stunnel-test/stunnel-receiver.conf 2016.09.14 06:54:35 LOG5[ui]: UTF-8 byte order mark not detected 2016.09.14 06:54:35 LOG7[ui]: Compression disabled 2016.09.14 06:54:35 LOG7[ui]: Snagged 64 random bytes from /dev/urandom 2016.09.14 06:54:35 LOG7[ui]: PRNG seeded successfully 2016.09.14 06:54:35 LOG6[ui]: Initializing inetd mode configuration 2016.09.14 06:54:35 LOG6[ui]: Loading certificate from file: /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG6[ui]: Certificate loaded from file: /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG6[ui]: Loading private key from file: /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG4[ui]: Insecure file permissions on /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG6[ui]: Private key loaded from file: /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG7[ui]: Private key check succeeded 2016.09.14 06:54:35 LOG7[ui]: DH initialization 2016.09.14 06:54:35 LOG7[ui]: Using DH parameters from /Users/dave/Desktop/stunnel-test/cert.pem 2016.09.14 06:54:35 LOG6[ui]: 2048-bit DH parameters loaded 2016.09.14 06:54:35 LOG7[ui]: ECDH initialization 2016.09.14 06:54:35 LOG7[ui]: ECDH initialized with curve prime256v1 2016.09.14 06:54:35 LOG7[ui]: SSL options: 0x03004004 (+0x03004000, -0x00000000) 2016.09.14 06:54:35 LOG5[ui]: Configuration successful 2016.09.14 06:54:35 LOG7[ui]: Service [stunnel] started 2016.09.14 06:54:35 LOG7[ui]: Option TCP_NODELAY set on local socket 2016.09.14 06:54:35 LOG5[ui]: Service [stunnel] accepted connection from ::1:51362 2016.09.14 06:54:35 LOG6[ui]: Peer certificate not required 2016.09.14 06:54:35 LOG7[ui]: SSL state (accept): before/accept initialization 2016.09.14 06:54:35 LOG7[ui]: SNI: no virtual services defined 2016.09.14 06:54:35 LOG7[ui]: SSL state (accept): SSLv3 read client hello A 2016.09.14 06:54:35 LOG7[ui]: SSL state (accept): SSLv3 write server hello A 2016.09.14 06:54:35 LOG7[ui]: SSL state (accept): SSLv3 write certificate A 2016.09.14 06:54:35 LOG7[ui]: SSL state (accept): SSLv3 write certificate request A 2016.09.14 06:54:35 LOG7[ui]: SSL state (accept): SSLv3 flush data 2016.09.14 06:54:40 LOG3[ui]: SSL_accept: Peer suddenly disconnected 2016.09.14 06:54:40 LOG5[ui]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2016.09.14 06:54:40 LOG7[ui]: Deallocating application specific data for addr index 2016.09.14 06:54:40 LOG7[ui]: Service [stunnel] finished (0 left) """"""""""""""""""" The server-side-Stunnel is invoked via launchd using this LaunchDaemon (but this seems to be working okay — I think): """"""""""""""""""" <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Disabled</key> <false/> <key>StandardErrorPath</key> <string>/Users/dave/Desktop/stunnel-test/receiver-error.log</string> <key>StandardOutPath</key> <string>/Users/dave/Desktop/stunnel-test/receiver-out.log</string> <key>Label</key> <string>com.stunnel.test</string> <key>ProgramArguments</key> <array> <string>/Users/dave/Desktop/stunnel-test/stunnel</string> <string>/Users/dave/Desktop/stunnel-test/stunnel-receiver.conf</string> </array> <key>inetdCompatibility</key> <dict> <key>Wait</key> <false/> </dict> <key>Sockets</key> <dict> <key>Listeners</key> <dict> <key>SockServiceName</key> <string>874</string> <key>SockType</key> <string>stream</string> </dict> </dict> </dict> </plist> """"""""""""""""""" I’ve looked at the output of bash-3.2# tcpdump -i all -XX -xx -vv port 874 but this didn’t give me any obvious clues. I can send it if it’s useful but I’ve omitted it for now as it’s long. I’ve reproduced the same hang on Mac OS X 10.11 and 10.6. I’ve recompiled Stunnel in 10.11 and 10.9 environments but still get this same hang. Any advice appreciated.. — Dave.

1 0

Re: [stunnel-users] stunnel 5.x no answer in server mode?
by Ulli Horlacher 14 Sep '16

14 Sep '16

On Tue 2016-09-13 (22:25), Micha?? Trojnara wrote: > On 13.09.2016 20:35, Ulli Horlacher wrote: > >> It is impossible to say anything without analysis of the executed fexsrv > >> program. > > > > The problem cannot be in fexsrv, because it works with stunnel 4.27 > > What is the point of sending an email to the mailing list when you > ignore our effort to help you? Where do I ignore help? > fexsrv terminates immediately with exit code 1. No. It does not start at all, so it does not terminate. fexsrv logs everything and when running with stunnel 5.x the log file is empty. But meanwhile I found the error: stunnel 5.x needs the a full path for the exec statement: exec = /usr/bin/perl For stunnel 4.x it was sufficent to use: exec = perl -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlacher(a)tik.uni-stuttgart.de Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ REF:<45835cd9-b239-d80c-38a0-3f978132e40e(a)stunnel.org>

2 1

Errors in log
by Mark Hannig 13 Sep '16

13 Sep '16

Can you please help me. Stunnel has been working fine for months and I just started getting these errors in the last day or two. Thank you: 2016.09.11 13:43:38 LOG5[10]: Service [ssmtp] accepted connection from 46.101.193.127:33818 2016.09.11 13:43:40 LOG3[10]: SSL_accept: Peer suddenly disconnected 2016.09.11 13:43:40 LOG5[10]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2016.09.11 13:43:40 LOG5[11]: Service [ssmtp] accepted connection from 46.101.193.127:34154 2016.09.11 13:43:40 LOG3[11]: SSL_accept: 1408A10B: error:1408A10B:SSL routines:ssl3_get_client_hello:wrong version number 2016.09.11 13:43:40 LOG5[11]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2016.09.11 13:43:40 LOG5[12]: Service [ssmtp] accepted connection from 46.101.193.127:34254 2016.09.11 13:43:42 LOG3[12]: s_connect: connect 127.0.0.1:25: Connection refused (WSAECONNREFUSED) (10061) 2016.09.11 13:43:42 LOG5[12]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2016.09.11 17:22:39 LOG5[13]: Service [smtp-tls-wrapper] accepted connection from 127.0.0.1:58020 2016.09.11 17:22:39 LOG5[13]: s_connect: connected 52.35.228.26:465 2016.09.11 17:22:39 LOG5[13]: Service [smtp-tls-wrapper] connected remote server from 172.31.10.223:58021 2016.09.11 17:22:40 LOG5[13]: Connection closed: 7072 byte(s) sent to SSL, 369 byte(s) sent to socket 2016.09.11 17:22:40 LOG5[14]: Service [smtp-tls-wrapper] accepted connection from 127.0.0.1:58022 2016.09.11 17:22:40 LOG5[14]: s_connect: connected 52.35.58.187:465 2016.09.11 17:22:40 LOG5[14]: Service [smtp-tls-wrapper] connected remote server from 172.31.10.223:58023 2016.09.11 17:22:40 LOG5[14]: Connection closed: 7302 byte(s) sent to SSL, 361 byte(s) sent to socket -- Mark F. Hannig mhannig(a)gmail.com

2 2

Re: [stunnel-users] stunnel 5.x no answer in server mode?
by Ulli Horlacher 13 Sep '16

13 Sep '16

On Tue 2016-09-13 (12:10), Ma??gorzata Olszówka wrote: > > I use stunnel as a https proxy for my own http server (*). > > > > The server mode of stunnel 5.x does not work any more. > > It accepts the connection and then immediatelly closes it without sending > > back any data. > > stunnel 4.x is working fine (for many years!), with the same configuration. > > The client receives no data at all, the connection is closed by the server > > (stunnel). > > > > As I wrote: with stunnel 4.27 everything works as expected. Does stunnel > > 5.x need another configuration? > > The log messages show, that the child process terminated with code 1. > This is the point where you should start looking for the cause. The client fexsrv does not start at all with stunnel 5.x, whereas with stunnel 4.27 everything works fine. > It is impossible to say anything without analysis of the executed fexsrv > program. The problem cannot be in fexsrv, because it works with stunnel 4.27 -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlacher(a)tik.uni-stuttgart.de Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ REF:<f0622f17-fd11-bdb8-4a82-9665463c0d64(a)olszowka.net>

1 0

Upgrade from 5.03 to 5.35
by Hon Quach 07 Sep '16

07 Sep '16

Hi, When I perform the upgrade the stunnel service won't start, it tries to load the pem files but it is failing. I noticed when I install stunnel on my test system, the conf file is different from the version 5.03. I'm looking for documentation a on how to perform a clean upgrade but I'm having difficulty finding that information. Thanks! Sent from my iPhone

1 0

stunnel 5.x no answer in server mode?
by Ulli Horlacher 31 Aug '16

31 Aug '16

I use stunnel as a https proxy for my own http server (*). The server mode of stunnel 5.x does not work any more. It accepts the connection and then immediatelly closes it without sending back any data. stunnel 4.x is working fine (for many years!), with the same configuration. Here is my (test) config which shows the problem (host is Ubuntu 16.04): root@xerus:/tmp# cat stunnel.conf pid = /tmp/stunnel.pid output = /home/fex/spool/stunneld.log debug = debug fips = no foreground = yes [https] accept = 443 cert = /home/fex/etc/stunnel.pem sslVersion = all TIMEOUTclose = 1 exec = perl execargs = perl -T /home/fex/bin/fexsrv stunnel root@xerus:/tmp# /opt/stunnel-5.35/bin/stunnel stunnel.conf 2016.08.30 18:58:55 LOG7[ui]: Clients allowed=500 2016.08.30 18:58:55 LOG5[ui]: stunnel 5.35 on x86_64-unknown-linux-gnu platform 2016.08.30 18:58:55 LOG5[ui]: Compiled/running with OpenSSL 1.0.2g-fips 1 Mar 2016 2016.08.30 18:58:55 LOG5[ui]: Threading:PTHREAD Sockets:POLL,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI 2016.08.30 18:58:55 LOG7[ui]: errno: (*__errno_location ()) 2016.08.30 18:58:55 LOG5[ui]: Reading configuration from file /tmp/stunnel.conf 2016.08.30 18:58:55 LOG5[ui]: UTF-8 byte order mark not detected 2016.08.30 18:58:55 LOG5[ui]: FIPS mode disabled 2016.08.30 18:58:55 LOG7[ui]: Compression disabled 2016.08.30 18:58:55 LOG7[ui]: Snagged 64 random bytes from /root/.rnd 2016.08.30 18:58:55 LOG7[ui]: Wrote 1024 new random bytes to /root/.rnd 2016.08.30 18:58:55 LOG7[ui]: PRNG seeded successfully 2016.08.30 18:58:55 LOG6[ui]: Initializing service [https] 2016.08.30 18:58:55 LOG6[ui]: Loading certificate from file: /home/fex/etc/stunnel.pem 2016.08.30 18:58:55 LOG6[ui]: Certificate loaded from file: /home/fex/etc/stunnel.pem 2016.08.30 18:58:55 LOG6[ui]: Loading private key from file: /home/fex/etc/stunnel.pem 2016.08.30 18:58:55 LOG6[ui]: Private key loaded from file: /home/fex/etc/stunnel.pem 2016.08.30 18:58:55 LOG7[ui]: Private key check succeeded 2016.08.30 18:58:55 LOG7[ui]: DH initialization 2016.08.30 18:58:55 LOG7[ui]: Using DH parameters from /home/fex/etc/stunnel.pem 2016.08.30 18:58:55 LOG6[ui]: 1024-bit DH parameters loaded 2016.08.30 18:58:55 LOG7[ui]: ECDH initialization 2016.08.30 18:58:55 LOG7[ui]: ECDH initialized with curve prime256v1 2016.08.30 18:58:55 LOG7[ui]: SSL options: 0x03004004 (+0x03004000, -0x00000000) 2016.08.30 18:58:55 LOG5[ui]: Configuration successful 2016.08.30 18:58:55 LOG7[ui]: Listening file descriptor created (FD=7) 2016.08.30 18:58:55 LOG7[ui]: Option SO_REUSEADDR set on accept socket 2016.08.30 18:58:55 LOG7[ui]: Service [https] (FD=7) bound to 0.0.0.0:443 2016.08.30 18:58:55 LOG7[ui]: Created pid file /tmp/stunnel.pid (here comes the https client connect) 2016.08.30 18:59:20 LOG7[ui]: Found 1 ready file descriptor(s) 2016.08.30 18:59:20 LOG7[ui]: FD=4 events=0x2001 revents=0x0 2016.08.30 18:59:20 LOG7[ui]: FD=7 events=0x2001 revents=0x1 2016.08.30 18:59:20 LOG7[ui]: Service [https] accepted (FD=3) from 127.0.0.1:44166 2016.08.30 18:59:20 LOG7[0]: Service [https] started 2016.08.30 18:59:20 LOG7[0]: Option TCP_NODELAY set on local socket 2016.08.30 18:59:20 LOG5[0]: Service [https] accepted connection from 127.0.0.1:44166 2016.08.30 18:59:20 LOG6[0]: Peer certificate not required 2016.08.30 18:59:20 LOG7[0]: SSL state (accept): before/accept initialization 2016.08.30 18:59:20 LOG7[0]: SNI: no virtual services defined 2016.08.30 18:59:20 LOG7[0]: New session callback 2016.08.30 18:59:20 LOG7[0]: 1 server accept(s) requested 2016.08.30 18:59:20 LOG7[0]: 1 server accept(s) succeeded 2016.08.30 18:59:20 LOG7[0]: 0 server renegotiation(s) requested 2016.08.30 18:59:20 LOG7[0]: 0 session reuse(s) 2016.08.30 18:59:20 LOG7[0]: 0 internal session cache item(s) 2016.08.30 18:59:20 LOG7[0]: 0 internal session cache fill-up(s) 2016.08.30 18:59:20 LOG7[0]: 0 internal session cache miss(es) 2016.08.30 18:59:20 LOG7[0]: 0 external session cache hit(s) 2016.08.30 18:59:20 LOG7[0]: 0 expired session(s) retrieved 2016.08.30 18:59:20 LOG6[0]: SSL accepted: new session negotiated 2016.08.30 18:59:20 LOG6[0]: No peer certificate received 2016.08.30 18:59:20 LOG6[0]: Negotiated TLSv1.2 ciphersuite ECDHE-RSA-AES128-SHA256 (128-bit encryption) 2016.08.30 18:59:20 LOG7[0]: Compression: null, expansion: null 2016.08.30 18:59:20 LOG6[0]: Local mode child started (PID=30833) 2016.08.30 18:59:20 LOG7[0]: Option TCP_NODELAY set on remote socket 2016.08.30 18:59:20 LOG7[0]: Remote descriptor (FD=11) initialized 2016.08.30 18:59:20 LOG6[0]: Read socket closed (readsocket) 2016.08.30 18:59:20 LOG7[0]: Sending close_notify alert 2016.08.30 18:59:20 LOG7[0]: SSL alert (write): warning: close notify 2016.08.30 18:59:20 LOG6[0]: SSL_shutdown successfully sent close_notify alert 2016.08.30 18:59:20 LOG7[ui]: Found 1 ready file descriptor(s) 2016.08.30 18:59:20 LOG7[ui]: FD=4 events=0x2001 revents=0x1 2016.08.30 18:59:20 LOG7[ui]: FD=7 events=0x2001 revents=0x0 2016.08.30 18:59:20 LOG7[ui]: Dispatching signals from the signal pipe 2016.08.30 18:59:20 LOG7[ui]: Processing SIGCHLD 2016.08.30 18:59:20 LOG6[ui]: Child process 30833 finished with code 1 2016.08.30 18:59:20 LOG7[ui]: Signal pipe is empty 2016.08.30 18:59:20 LOG3[0]: socket fd: Broken pipe (32) 2016.08.30 18:59:20 LOG6[0]: writesocket: Socket is closed 2016.08.30 18:59:20 LOG5[0]: Connection closed: 0 byte(s) sent to SSL, 23 byte(s) sent to socket 2016.08.30 18:59:20 LOG7[0]: Remote descriptor (FD=11) closed 2016.08.30 18:59:20 LOG7[0]: Local descriptor (FD=3) closed 2016.08.30 18:59:20 LOG7[0]: Service [https] finished (0 left) The client receives no data at all, the connection is closed by the server (stunnel). As I wrote: with stunnel 4.27 everything works as expected. Does stunnel 5.x need another configuration? (*) http://fex.rus.uni-stuttgart.de/ -- Ullrich Horlacher Server und Virtualisierung Rechenzentrum TIK Universitaet Stuttgart E-Mail: horlacher(a)tik.uni-stuttgart.de Allmandring 30a Tel: ++49-711-68565868 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ REF:<20160831074057.GA13703(a)rus.uni-stuttgart.de>

1 0

Issue with stunnel over squid
by Mike McPhee 30 Aug '16

30 Aug '16

Hello, I have a windows machine running as a stunnel client that establishes a session but then, when launching an SSH session to my loopback crashes. Putty reports that the "Server unexpectedly closed the network connection." Here are the logs: 2016.08.30 16:06:08 LOG5[main]: Reading configuration from file stunnel.conf 2016.08.30 16:06:08 LOG5[main]: UTF-8 byte order mark detected 2016.08.30 16:06:08 LOG5[main]: FIPS mode disabled 2016.08.30 16:06:08 LOG4[main]: Service [squid] needs authentication to prevent MITM attacks 2016.08.30 16:06:08 LOG5[main]: Configuration successful 2016.08.30 16:06:17 LOG5[2]: Service [squid] accepted connection from 127.0.0.1:55791 2016.08.30 16:06:17 LOG5[2]: s_connect: connected 10.5.8.74:8888 2016.08.30 16:06:17 LOG5[2]: Service [squid] connected remote server from 10.5.8.69:55792 2016.08.30 16:06:17 LOG5[2]: Connection closed: 28 byte(s) sent to SSL, 0 byte(s) sent to socket Here is the server-side stunnel.conf: sslVersion = all options = NO_SSLv2 client = no cert = /etc/stunnel/server.pem pid = /var/run/stunnel.pid output = /var/log/stunnel [squid] accept = 8888 connect = 127.0.0.1:3128 cert = /etc/stunnel/stunnel.pem [openvpn] client = no accept = 993 connect = 34567 Here is the client side (Windows 7): cert = stunnel.pem client = yes [squid] accept = 127.0.0.1:8080 connect = 10.5.8.74:8443 I seem to be negotiating all of the appropriate keys, openvpn and squid3 are verified running, and have iptables configured, so I am not sure what I am missing. Can anyone assist? Thanks in advance! Mike

1 0

-reopen for Ubuntu?
by mguyre＠comcast.net 24 Aug '16

24 Aug '16

Are there any plans to add the -reopen functionality to other operating systems? Thanks Mike

1 0

[Stunnel] [Android x86] Compilation
by John Fisherman 22 Aug '16

22 Aug '16

Dear all, I am currently trying to make stunnel work for an Android x86 architecture. The android binary found on the stunnel official website is not supported on x86 architecture, so I'd like to cross-compile it myself using the 'configure' options. I did not find much informations about this around the web, could you give me some advices or at least tell me if it is possible to make Stunnel work on an Android x86 device ? Thanks in advance, Regards, - John

1 0

Stunnel exits with timeout
by SP 19 Aug '16

19 Aug '16

Summary of problem (configuration and log details below): I am attempting to configure Stunnel to run a pop3s service on our server so that users can retrieve email securely. Stunnel is started as a systemctl service. If I include both the following in the stunnel.conf: accept = mail.myserver.net:995 connect = localhost:110 then systemctl will exit immediately with: Service [pop3s]: Each service must define two endpoints stunnel.service: Control process exited, code=exited status=1 Failed to start SSL tunnel for network daemons. If I comment the connect to 110 then it will start and hang then eventually timeout: stunnel.service: Failed with result 'timeout'. Below is my stunnel.conf and log excerpt from the start with the connect to 110 commented out. I would greatly appreciate any advice. ---stunnel.conf setuid = nobody setgid = nobody pid = /usr/local/var/lib/stunnel/var/run/stunnel.pid foreground = yes ;debug = info debug = 7 sslVersion = TLSv1.2 output = /usr/local/var/lib/stunnel/var/log/stunnel.log ;ciphers = HIGH:MEDIUM:+DH:!SSLv2:!aNULL:+SHA256:+SHA1:+MD5 ciphers = HIGH:+3DES:+DH:!aNULL:!SSLv2 transparent = yes delay = no fips = no compression = deflate client = no [pop3s] accept = mail.myserver.net:995 ;connect = localhost:110 cert = /etc/stunnel/stunnel.pem key = /etc/stunnel/stunnel.pem exec = /usr/local/sbin/gnu-pop3d execargs = --debug=000 --mdn --timeout=60 --ipv6 ----log excerpt ----- 2016.08.17 15:08:55 LOG7[ui]: Clients allowed=500 2016.08.17 15:08:55 LOG5[ui]: stunnel 5.35 on x86_64-unknown-linux-gnu platform 2016.08.17 15:08:55 LOG5[ui]: Compiled/running with OpenSSL 1.0.2h 3 May 2016 2016.08.17 15:08:55 LOG5[ui]: Threading:PTHREAD Sockets:POLL,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI 2016.08.17 15:08:55 LOG7[ui]: errno: (*__errno_location ()) 2016.08.17 15:08:55 LOG5[ui]: Reading configuration from file /etc/stunnel/stunnel.conf 2016.08.17 15:08:55 LOG5[ui]: UTF-8 byte order mark not detected 2016.08.17 15:08:55 LOG7[cron]: Cron thread initialized 2016.08.17 15:08:55 LOG5[ui]: FIPS mode disabled 2016.08.17 15:08:55 LOG6[ui]: Compression enabled: 1 method(s) 2016.08.17 15:08:55 LOG7[ui]: Snagged 64 random bytes from /dev/urandom 2016.08.17 15:08:55 LOG7[ui]: PRNG seeded successfully 2016.08.17 15:08:55 LOG6[ui]: Initializing service [pop3s] 2016.08.17 15:08:55 LOG6[ui]: Loading certificate from file: /etc/stunnel/stunnel.pem 2016.08.17 15:08:55 LOG6[ui]: Certificate loaded from file: /etc/stunnel/stunnel.pem 2016.08.17 15:08:55 LOG6[ui]: Loading private key from file: /etc/stunnel/stunnel.pem 2016.08.17 15:08:55 LOG6[ui]: Private key loaded from file: /etc/stunnel/stunnel.pem 2016.08.17 15:08:55 LOG7[ui]: Private key check succeeded 2016.08.17 15:08:55 LOG7[ui]: DH initialization 2016.08.17 15:08:55 LOG7[ui]: Could not load DH parameters from /etc/stunnel/stunnel.pem 2016.08.17 15:08:55 LOG6[ui]: Using dynamic DH parameters 2016.08.17 15:08:55 LOG7[ui]: ECDH initialization 2016.08.17 15:08:55 LOG7[ui]: ECDH initialized with curve prime256v1 2016.08.17 15:08:55 LOG7[ui]: SSL options: 0x03004004 (+0x03004000, -0x00000000) 2016.08.17 15:08:55 LOG5[ui]: Configuration successful 2016.08.17 15:08:55 LOG7[ui]: Listening file descriptor created (FD=7) 2016.08.17 15:08:55 LOG7[ui]: Option SO_REUSEADDR set on accept socket 2016.08.17 15:08:55 LOG7[ui]: Service [pop3s] (FD=7) bound to 60.62.114.105:995 2016.08.17 15:08:55 LOG6[cron]: Executing cron jobs 2016.08.17 15:08:55 LOG7[ui]: Created pid file /usr/local/var/lib/stunnel/var/run/stunnel.pid 2016.08.17 15:08:55 LOG5[cron]: Updating DH parameters 2016.08.17 15:10:01 LOG5[cron]: DH parameters updated 2016.08.17 15:10:01 LOG6[cron]: Cron jobs completed in 66 seconds 2016.08.17 15:10:01 LOG7[cron]: Waiting 86334 seconds 2016.08.17 15:10:25 LOG7[ui]: Found 1 ready file descriptor(s) 2016.08.17 15:10:25 LOG7[ui]: FD=4 events=0x2001 revents=0x1 2016.08.17 15:10:25 LOG7[ui]: FD=7 events=0x2001 revents=0x0 2016.08.17 15:10:25 LOG7[ui]: Dispatching signals from the signal pipe 2016.08.17 15:10:25 LOG7[ui]: Processing SIGNAL_TERMINATE 2016.08.17 15:10:25 LOG5[ui]: Terminated 2016.08.17 15:10:25 LOG7[ui]: Closing service [pop3s] 2016.08.17 15:10:25 LOG7[ui]: Service [pop3s] closed (FD=7) 2016.08.17 15:10:25 LOG7[ui]: Service [pop3s] closed 2016.08.17 15:10:25 LOG7[ui]: removing pid file /usr/local/var/lib/stunnel/var/run/stunnel.pid

2 6

Logging Issues Causing Crash?
by Randall LeJeune 08 Aug '16

08 Aug '16

Hello all, Has anyone experienced a full log file causing stunnel issues in the past? We tried upgrading from 4.56 to 5.17 and the upgrade seemed to go fine at first, but a day or so later we began to have some disconnects. Later we downgraded to 5.01 which worked OK at first, but then we ran into the same kinds of problems again after a few days. We eventually put the stunnel.log file on a separate filesystem, but I am curious, has anyone else experienced any issues like this? Thanks, Randy

3 2

Config was working. Now it isn't after reboot
by Lee Savidge 02 Aug '16

02 Aug '16

I just reinstalled stunnel the latest version. When running I went through the creation of the pem file. I put in UK for the country code and the company name and put a . for everything else. It finished, I start the GUI and it works. I edited the config file to comment out the gmail IMAP section and reload it and it was fine. I rebooted, now it tells me tehre is an error in the config file. Why? I keep getting this problem. Rebooting seems to break the config somehow. Log shows this when stunnel starts: [ ] Cron thread initialized [ ] Running on Windows 6.1 [ ] No limit detected for the number of clients [.] stunnel 5.35 on x86-pc-msvc-1500 platform [.] Compiled/running with OpenSSL 1.0.2h-fips 3 May 2016 [.] Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI [ ] errno: (*_errno()) [ ] GUI message loop initialized [ ] Running on Windows 6.1 [.] Reading configuration from file stunnel.conf [.] UTF-8 byte order mark detected [.] FIPS mode disabled [ ] Compression disabled [ ] Snagged 64 random bytes from C:/.rnd [ ] Wrote 1024 new random bytes to C:/.rnd [ ] PRNG seeded successfully [ ] Initializing service [gmail-pop3] [ ] No certificate or private key specified [ ] SSL options: 0x03000004 (+0x03000000, -0x00000000) [ ] Initializing service [gmail-smtp] [ ] No certificate or private key specified [ ] SSL options: 0x03000004 (+0x03000000, -0x00000000) [.] Configuration successful [ ] Listening file descriptor created (FD=388) [ ] Option SO_EXCLUSIVEADDRUSE set on accept socket [ ] Service [gmail-pop3] (FD=388) bound to 127.0.0.1:110 [ ] Listening file descriptor created (FD=392) [ ] Option SO_EXCLUSIVEADDRUSE set on accept socket [!] bind: Permission denied (WSAEACCES) (10013) [!] Error binding service [gmail-smtp] to 127.0.0.1:25 [ ] Closing service [gmail-pop3] [ ] Service [gmail-pop3] closed (FD=388) [ ] Service [gmail-pop3] closed [ ] Closing service [gmail-smtp] [ ] Service [gmail-smtp] closed [!] Server is down [ ] Executing cron jobs [ ] Cron jobs completed in 0 seconds [ ] Waiting 86400 seconds The config file contains this: debug = debug output = stunnel.log [gmail-pop3] client = yes accept = 127.0.0.1:110 connect = pop.gmail.com:995 verifyChain = yes CAfile = ca-certs.pem checkHost = pop.gmail.com OCSPaia = yes [gmail-smtp] client = yes accept = 127.0.0.1:25 connect = smtp.gmail.com:465 verifyChain = yes CAfile = ca-certs.pem checkHost = smtp.gmail.com OCSPaia = yes I have pasted in only the stuff that isn't commented out. Why does this not work after a reboot? It makes no sense. -- =-----------------= Lee Savidge =-----------------= --

2 2

Installation problem on Windows 2003
by Tom Eberhard 01 Aug '16

01 Aug '16

Hello stunnel-users: I'm trying to install stunnel 5.35 on a Windows 2003 box, 32-bit. The installer runs to completion, but we get an error from SimpleFC: SimpleFC::AddApplication failed to add stunnel What is causing this error to come up, and what do I have to do to fix it? Googling just showed that SimpleFC is a plugin to interact with the Windows Firewall. Thanks, Tom This e-mail is intended solely for the person or entity to which it is addressed and may contain confidential and/or privileged information. Any review, dissemination, copying, printing or other use of this e-mail by persons or entities other than the addressee is prohibited. If you have received this e-mail in error, please contact the sender immediately and delete the material from any computer.

1 0

Client-side SNI
by Vincent Deschenes 01 Aug '16

01 Aug '16

Hi, Anyone know if there is anything special to do to get ServerName sent when using stunnel in client mode to be able to connect to SNI enabled server? Using latest version of stunnel and openssl. Will stunnel use the name specified in the "connect=" config ? Thanks, Regards, Vincent Deschenes Ing. PMP Director of Operations Stelvio Inc. (+1) 514-281-8570

1 2

stunnel only sends some emails, not all, and only on second attempt
by Martin Jaquess 28 Jul '16

28 Jul '16

Hi I'm using the latest Stunnel (5.35), running under Windows Server 2000, to download emails from Outlook(Office365)/Outlook 2016 to another email client called OfficeTalk which only supports unencrypted POP3, so it can't access Outlook directly. First problem is that although most emails are downloaded without problem, some stubbornly and consistently refuse to be downloaded. This omission doesn't seem related to attachments, encoding, size, date, or anything else that I can see. Has anyone else experienced this or have any idea why it might be happening?? Second problem is that the first download doesn't produce anything, but if I run the request again, it works - the only difference in the log files is the IP addresses I'd greatly appreciate any advice on this - I've checked the threads but can't find anything similar. Many thanks in advance Martin Config file for all attempts is:debug=7 output = c:\program files\stunnel\stunnel.log [outlook-pop3] client = yes accept = 127.0.0.1:110 connect = outlook.office365.com:995 Logfile for successful download of one email is:12:49:50 LOG7[cron]: Cronthread initialized12:49:50 LOG7[main]: Runningon Windows 5.012:49:50 LOG7[main]: No limitdetected for the number of clients12:49:50 LOG5[main]: stunnel5.35 on x86-pc-msvc-1500 platform12:49:50 LOG5[main]:Compiled/running with OpenSSL 1.0.2h-fips 3 May 201612:49:50 LOG5[main]:Threading:WIN32 Sockets:SELECT,IPv4 TLS:ENGINE,FIPS,OCSP,PSK,SNI12:49:50 LOG7[main]: errno:(*_errno())12:49:50 LOG7[ui]: GUImessage loop initialized12:49:50 LOG7[main]: Runningon Windows 5.012:49:50 LOG5[main]: Reading configurationfrom file stunnel.conf12:49:50 LOG5[main]: UTF-8byte order mark detected12:49:50 LOG5[main]: FIPSmode disabled12:49:50 LOG7[main]:Compression disabled12:49:50 LOG7[main]: Snagged64 random bytes from C:/.rnd12:49:50 LOG7[main]: Wrote1024 new random bytes to C:/.rnd12:49:50 LOG7[main]: PRNGseeded successfully12:49:50 LOG6[main]:Initializing service [outlook-pop3]12:49:50 LOG7[main]: Nocertificate or private key specified12:49:50 LOG4[main]: Service[outlook-pop3] needs authentication to prevent MITM attacks12:49:50 LOG7[main]: SSLoptions: 0x03000004 (+0x03000000, -0x00000000)12:49:50 LOG5[main]:Configuration successful12:49:50 LOG7[main]:Listening file descriptor created (FD=344)12:49:50 LOG7[main]: Service[outlook-pop3] (FD=344) bound to 127.0.0.1:11012:49:53 LOG7[main]: Found 1ready file descriptor(s)12:49:53 LOG7[main]: FD=204ifds=r-x ofds=---12:49:53 LOG7[main]: Service[outlook-pop3] accepted (FD=356) from 127.0.0.1:380112:49:53 LOG7[main]: Creatinga new thread12:49:53 LOG7[main]: Newthread created12:49:53 LOG7[0]: Service[outlook-pop3] started12:49:53 LOG7[0]: OptionTCP_NODELAY set on local socket12:49:53 LOG5[0]: Service[outlook-pop3] accepted connection from 127.0.0.1:380112:49:53 LOG6[0]: failover:round-robin, starting at entry #112:49:53 LOG6[0]: s_connect:connecting 132.245.224.162:99512:49:53 LOG7[0]: s_connect:s_poll_wait 132.245.224.162:995: waiting 10 seconds12:49:53 LOG5[0]: s_connect:connected 132.245.224.162:99512:49:53 LOG5[0]: Service[outlook-pop3] connected remote server from 192.168.15.102:380212:49:53 LOG7[0]: OptionTCP_NODELAY set on remote socket12:49:53 LOG7[0]: Remotedescriptor (FD=380) initialized12:49:53 LOG6[0]: SNI:sending servername: outlook.office365.com12:49:53 LOG6[0]: Peercertificate not required12:49:53 LOG7[0]: SSL state(connect): before/connect initialization12:49:53 LOG7[0]: SSL state(connect): SSLv2/v3 write client hello A12:49:53 LOG7[0]: SSL state(connect): SSLv3 read server hello A12:49:53 LOG6[0]: Certificateverification disabled12:49:53 LOG6[0]: Certificateverification disabled12:49:53 LOG7[0]: SSL state(connect): SSLv3 read server certificate A12:49:53 LOG7[0]: SSL state(connect): SSLv3 read server key exchange A12:49:53 LOG6[0]: Clientcertificate not requested12:49:53 LOG7[0]: SSL state(connect): SSLv3 read server done A12:49:53 LOG7[0]: SSL state(connect): SSLv3 write client key exchange A12:49:53 LOG7[0]: SSL state(connect): SSLv3 write change cipher spec A12:49:53 LOG7[0]: SSL state(connect): SSLv3 write finished A12:49:53 LOG7[0]: SSL state(connect): SSLv3 flush data12:49:53 LOG7[0]: SSL state(connect): SSLv3 read finished A12:49:53 LOG7[0]: 1 client connect(s) requested12:49:53 LOG7[0]: 1 client connect(s) succeeded12:49:53 LOG7[0]: 0 client renegotiation(s) requested12:49:53 LOG7[0]: 0 session reuse(s)12:49:53 LOG6[0]: SSLconnected: new session negotiated12:49:53 LOG7[0]: Peercertificate was cached (4882 bytes)12:49:53 LOG6[0]: NegotiatedTLSv1.2 ciphersuite ECDHE-RSA-AES256-SHA384 (256-bit encryption)12:49:53 LOG7[0]:Compression: null, expansion: null12:49:54 LOG6[0]: Read socketclosed (readsocket)12:49:54 LOG7[0]: Sendingclose_notify alert12:49:54 LOG7[0]: SSL alert(write): warning: close notify12:49:54 LOG6[0]:SSL_shutdown successfully sent close_notify alert12:49:54 LOG7[main]: Found 1ready file descriptor(s)12:49:54 LOG7[main]: FD=204ifds=r-x ofds=---12:49:54 LOG7[main]: Service[outlook-pop3] accepted (FD=404) from 127.0.0.1:380312:49:54 LOG7[main]: Creatinga new thread12:49:54 LOG7[main]: Newthread created12:49:54 LOG7[1]: Service[outlook-pop3] started12:49:54 LOG7[1]: OptionTCP_NODELAY set on local socket12:49:54 LOG5[1]: Service[outlook-pop3] accepted connection from 127.0.0.1:380312:49:54 LOG6[1]: failover:round-robin, starting at entry #212:49:54 LOG6[1]: s_connect:connecting 132.245.212.98:99512:49:54 LOG7[1]: s_connect:s_poll_wait 132.245.212.98:995: waiting 10 seconds12:49:54 LOG6[0]: SSL socketclosed (SSL_read)12:49:54 LOG7[0]: Sent socketwrite shutdown12:49:54 LOG5[0]: Connectionclosed: 67 byte(s) sent to SSL, 11900 byte(s) sent to socket12:49:54 LOG7[0]: Remotedescriptor (FD=380) closed12:49:54 LOG7[0]: Local descriptor(FD=356) closed12:49:54 LOG7[0]: Service[outlook-pop3] finished (1 left)12:49:54 LOG5[1]: s_connect:connected 132.245.212.98:99512:49:54 LOG5[1]: Service[outlook-pop3] connected remote server from 192.168.15.102:380412:49:54 LOG7[1]: OptionTCP_NODELAY set on remote socket12:49:54 LOG7[1]: Remotedescriptor (FD=428) initialized12:49:54 LOG6[1]: SNI:sending servername: outlook.office365.com12:49:54 LOG6[1]: Peercertificate not required12:49:54 LOG7[1]: SSL state(connect): before/connect initialization12:49:54 LOG7[1]: SSL state(connect): SSLv3 write client hello A12:49:54 LOG7[1]: SSL state(connect): SSLv3 read server hello A12:49:54 LOG6[1]: Certificateverification disabled12:49:54 LOG6[1]: Certificateverification disabled12:49:54 LOG7[1]: SSL state(connect): SSLv3 read server certificate A12:49:54 LOG7[1]: SSL state(connect): SSLv3 read server key exchange A12:49:54 LOG6[1]: Clientcertificate not requested12:49:54 LOG7[1]: SSL state(connect): SSLv3 read server done A12:49:54 LOG7[1]: SSL state(connect): SSLv3 write client key exchange A12:49:54 LOG7[1]: SSL state(connect): SSLv3 write change cipher spec A12:49:54 LOG7[1]: SSL state(connect): SSLv3 write finished A12:49:54 LOG7[1]: SSL state(connect): SSLv3 flush data12:49:54 LOG7[1]: SSL state(connect): SSLv3 read finished A12:49:54 LOG7[1]: 2 client connect(s) requested12:49:54 LOG7[1]: 2 client connect(s) succeeded12:49:54 LOG7[1]: 0 client renegotiation(s) requested12:49:54 LOG7[1]: 0 session reuse(s)12:49:54 LOG6[1]: SSLconnected: new session negotiated12:49:54 LOG7[1]:Deallocating application specific data for addr index12:49:54 LOG6[1]: NegotiatedTLSv1.2 ciphersuite ECDHE-RSA-AES256-SHA384 (256-bit encryption)12:49:54 LOG7[1]:Compression: null, expansion: null12:49:56 LOG6[1]: Read socketclosed (readsocket)12:49:56 LOG7[1]: Sendingclose_notify alert12:49:56 LOG7[1]: SSL alert(write): warning: close notify12:49:56 LOG6[1]:SSL_shutdown successfully sent close_notify alert12:49:56 LOG6[1]: SSL socketclosed (SSL_read)12:49:56 LOG7[1]: Sent socketwrite shutdown12:49:56 LOG5[1]: Connectionclosed: 67 byte(s) sent to SSL, 11884 byte(s) sent to socket12:49:56 LOG7[1]: Remotedescriptor (FD=428) closed12:49:56 LOG7[1]: Localdescriptor (FD=404) closed12:49:56 LOG7[1]: Service[outlook-pop3] finished (0 left)

1 0

HTTPS proxy tunnel. ssl handshake failure
by Kirill Franko 22 Jul '16

22 Jul '16

1 1

AiX 7.1 TL3 SP6 - Stunnel Memory Usages grows after 24 hours
by Benjamin, Earl 19 Jul '16

19 Jul '16

Hello Everyone, I am running Stunnel-5.29 in AiX 7.1 TL3 SP6. I have added the DH param to the bottom of my CERT file. After approximately 24 hours or so the Stunnel CPU usage jumps to about 50% and after a few days to about 90%. Is there a configuration setting I've missed or compile option I need to consider? Thanks for your assistance in advance. Below is a cleaned up version of my config file. -Earl ------------------------------------------------- ; Verify peer certificate verify = 2 ; Certificate/key is needed in server mode and in client mode cert = /Server-certificate-all.pem key = /Server-certificate-all.pem CAfile = /all_root_ca.pem ; Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = TLSv1 ; PID path pid = /etc/oraserver_stunnel.pid ; Turn off Nagle algorithm socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Debug level debug = 2 ; Use it for client mode client = no ; Ciphers ciphers = DHE-RSA-AES256-SHA ; Service-level configuration [ oraserver_DB ] accept = 15210 connect = server:1622 [ oraserver_ASM ] accept = 15211 connect = server:1621 This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation

1 0

Man in the middle attack possibility
by Abhinav Srivastava 19 Jul '16

19 Jul '16

Hi, I'm trying to use stunnel to provide encryption for my application to server communication. Server is already ssl aware. I configured my app to talk to localhost:xyz, and configured stunnel in client mode to relay traffic from localhost:<xyz> to actual service. The stunnel to service ssl protocol would use the server certificate, as server is already ssl aware. For any reason if stunnel is not running it would become possible for a non-elevated attacker/malware to spin up a tcp server listening to xyz, essentially taking advantage of my re-configuration of app to talk to localhost:xyz, and spoof the actual server. Even if my app to server protocol had some anti-spoofing mechanism say e.g., reverse CHAP, the malware can easily relay the challenge and response by using the actual service. In my case the actual app is iscsi initiator software that is not in my control and cant be modified, while the server is an iscsi tcp server which I am free to modify. Are there any guidance/best practices around preventing this attack with stunnel? Thanks Abhinav

1 0

Client certificates now required by default?
by Wiest, Damian 07 Jul '16

07 Jul '16

After building stunnel 5.34 from source I noticed that my old config (5.22) was not working. [dwiest@716161-compute2 ~]$ sudo ./stunnel /etc/stunnel/stunnel.conf 2016.07.07 14:07:41 LOG5[ui]: stunnel 5.34 on x86_64-unknown-linux-gnu platform 2016.07.07 14:07:41 LOG5[ui]: Compiled/running with OpenSSL 1.0.1e-fips 11 Feb 2013 2016.07.07 14:07:41 LOG5[ui]: Threading:PTHREAD Sockets:POLL,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI Auth:LIBWRAP 2016.07.07 14:07:41 LOG5[ui]: Reading configuration from file /etc/stunnel/stunnel.conf 2016.07.07 14:07:41 LOG5[ui]: UTF-8 byte order mark not detected 2016.07.07 14:07:41 LOG5[ui]: FIPS mode disabled 2016.07.07 14:07:41 LOG5[ui]: Configuration successful 2016.07.07 14:07:41 LOG5[cron]: Updating DH parameters 2016.07.07 14:07:42 LOG5[0]: Service [rabbitmq] accepted connection from 192.168.237.81:49535 2016.07.07 14:07:42 LOG3[0]: SSL_accept: Peer suddenly disconnected 2016.07.07 14:07:42 LOG5[0]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2016.07.07 14:07:42 LOG5[1]: Service [rabbitmq] accepted connection from 192.168.237.81:49536 2016.07.07 14:07:42 LOG3[1]: SSL_accept: 140890C7: error:140890C7:SSL routines:SSL3_GET_CLIENT_CERTIFICATE:peer did not return a certificate But I haven't enabled client certificate verification! [dwiest@716161-compute2 ~]$ sudo grep verify /etc/stunnel/stunnel.conf ; verify = 2 I have to explicitly set verify to 0 or 1 in order to connect without a client cert. Is this intentional? The documentation suggests that by default no verification should be taking place. -Damian -- Confidentiality Notice: This e-mail transmission may contain confidential or legally privileged information that is intended only for the individual or entity named in the e-mail address. If you have received this communication in error, please notify me by return e-mail, and destroy this communication and all copies thereof, including any attachments. Apervita ® is a registered trademark of Apervita Inc.

1 0

stunnel and hosts.allow
by Yousef Alhashemi 05 Jul '16

05 Jul '16

Hi, This may be a little bit off-topic, but does anyone here use stunnel with pan? My connections to stunnel (in pan) are always refused by libwrap. I was looking for the right rule to add to /etc/hosts.allow but nothing seems to work aside from "ALL : ALL" (which is obviously not good) and "nntps: KNOWN". Is the latter reasonable? The hosts_access(5) manpage is confusing to say the least. It mentions that daemon (the first token on any line) is the name of the daemon running the process, which would be "stunnel" in my case, but using "stunnel : LOCAL" or even "stunnel : ALL" doesn't work. The rule that seems to work, as mentioned, is "nntps : KNOWN" ("nntps" being the group name in stunnel.conf). What's even more confusing to me is that "nntps : LOCAL" does not work either. Nor does "nntps : localhost 127.0.0.1", "nntps : localhost", "nntps : 127.0.0.1", or "nntps : 192.168.1.". Pan is running on the same machine as stunnel so all connections must be coming from localhost. Why do these rules not trigger? Either way, I'd like to know the "least permissive" hosts.allow rule that would allow me to connect to my news provider from pan, and/or whether "nntps : KNOWN" is a safe option. Thanks, Yousef

3 6

Another OpenSSL 1.1.x patch - no ssl23.h any more
by Peter Pentchev 27 Jun '16

27 Jun '16

Hi, What do you think about the attached patch that fixes yet another OpenSSL 1.1.x compilation problem: the OpenSSL developers dropped the ssl23.h file altogether? Thanks for your work on stunnel! G'luck, Peter -- Peter Pentchev roam(a)ringlet.net roam(a)FreeBSD.org pp(a)storpool.com PGP key: http://people.FreeBSD.org/~roam/roam.key.asc Key fingerprint 2EE7 A7A5 17FC 124C F115 C354 651E EFB0 2527 DF13

1 0

Failed to redirect http to https
by Doris Hongmei 27 Jun '16

27 Jun '16

Hi Support, I setup stunnel to a web server with apache Configuration like below, --- /usr/local/etc/stunnel/stunnel.conf ---------- ; It is recommended to drop root privileges if stunnel is started by root setuid = nobody setgid = nobody ; TLS front-end to a web server [https] accept = 443 connect = 127.0.0.1:80 cert = /usr/local/etc/stunnel/stunnel.pem --- end of /usr/local/etc/stunnel/stunnel.conf ---------- After stunnel started, https://xxx/ is working, http://xxx/ is also still working , which doesn't redirect to https://xxx automatically. As my understanding, all the connections from http should redirect to https through stunnel, right? What steps did I miss? I need your help. Thanks. [Ericsson]<http://www.ericsson.com/> DORIS HONGMEI Software Configuration Mgmt Engineer BUSS SA OSS&BSS BL CPM DU SEP GZ RelGrp Ericsson 5&6F, No 44-46 Jianzhong Road 510630,Guangzhou,Tian He Software Park, China Mobile +8613922114721 Office +862085117729 doris.hongmei(a)ericsson.com www.ericsson.com [http://www.ericsson.com/current_campaign]<http://www.ericsson.com/current_campaign> Legal entity: Ericsson, registered office in CGC . This Communication is Confidential. We only send and receive email on the basis of the terms set out at www.ericsson.com/email_disclaimer<http://www.ericsson.com/email_disclaimer>

2 2

Re: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit
by J. Michael Drew 24 Jun '16

24 Jun '16

Jose, I have discovered what I did wrong. I did the original stunnel installs from the command line and then installed the stunnel service from the command line as well. When I installed the stunnel service it would break the website. So I removed the service (I thought) then I copied a shortcut to stunnel.exe to the Win start up> program folder. Both sites started working on the servers as long as I was logged in through an RDP session. I uninstalled everything and reinstalled. Stunnel 5.32 installs a Windows GUI on Server 2012 as well so I went back and used the Windows server 2012 desktop applications to install the windows service and to stop the GUI application. Everything is now working as expected. It appears that I was running two instances of stunnel at the same time and I didn’t completely remove the original stunnel service. Thanks for all of your help, Cheers, Michael From: Josealf.rm [mailto:[email protected]] Sent: Thursday, June 23, 2016 2:37 PM To: J. Michael Drew Subject: Re: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit Hi Michael, Did my last suggestions help with your issue? Regards El 20 jun 2016, a las 18:00, J. Michael Drew <jmichaeldrew(a)hotmail.com> escribió: .Jose, I appreciate your patience. Internet - Clients : 443 -> : https://website.company.com/website/ ________Firewall___________ Web\Presentation Layer 2 Win 2012 Webservers (443) not currently connected to the production LB, application needs to work before connecting to LB. This configuration is first time on 64 bit OS… Win 2012. IIS 8 running Jakarta ISAPI Filter\Stunnel to redirect 9001 to 9009: _________Firewall\App Layer________ Port 9009 Connects to App server running Apache Application is working as expected as long as I am logged in to the IIS 8 server. I can telnet to the APP layer over 9009 and I can reach these websites externally as expected. Firewalls are good. Please let me know any other information you need. Thank you again, Michael From: Jose Alf. [mailto:[email protected]] Sent: Monday, June 20, 2016 4:32 PM To: J. Michael Drew Subject: Re: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit Michael, Please take this in constructive way. I am trying to help, but it looks like you need to do some reading and homework. Please check http://catb.org/~esr/faqs/smart-questions.html <http://catb.org/%7Eesr/faqs/smart-questions.html> I suggest you draw a picture of your environment and explain well what you're trying to achieve. Show your client, your backend server, your stunnel server, include the IPs and ports they're listening to and everything should be easier. Don't forget any firewalls thay may be in the way. Regards, Jose. _____ From: J. Michael Drew <jmichaeldrew(a)hotmail.com> To: 'Jose Alf.' <josealf(a)rocketmail.com> Sent: Monday, June 20, 2016 1:00 PM Subject: RE: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit Hi Jose, I made the changes you suggested, but I am still getting the same behavior. My external address is: https://website.company.com/website I am not adding any ports to the address. Thanks so much for your help! Michael From: Jose Alf. [mailto:[email protected]] Sent: Monday, June 20, 2016 12:10 PM To: J. Michael Drew; stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit Michael, I guess what you want to do is to be able to connect to your internal Webserver via your Win2012 stunnel proxy using a URL like: https://yourwin2012dnsname:9001/ <https://yourwin2012dnsname:9009/> if that is correct, I suggest to adjust your configuration as follows: 1. Your stunnel mode must be server, not client. So adjust your service stanza as follows: [CLI9F529A0A] accept=9001 connect=10.xxx.xxx.xxx:9009 client=no 2. In your current configuration stunnel is listening only in the localhost ipv4 address (127.0.0.1). Therefore, you can only connect when you are logged on the server, you can't connect from a remote client. Hope this helps you clarify what's going on. Regards, Jose From: J. Michael Drew [mailto:[email protected]] Sent: Monday, June 20, 2016 9:54 AM To: 'Josealf.rm' Subject: RE: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Jose, Once logged in to the server I can open a browser on the server and connect through https://localhost/website and I can log in to the site externally as expected. Here are the log files from IIS and stunnel where stunnel is running as a service on the Windows 2012 server: When I am not logged in to the server it fails: #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 00:30:21 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 00:30:21 159.xxx.xxx.xxx HEAD / - 443 - 190.xxx.xxx.xxx - - 200 0 0 1218 #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 05:41:01 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 05:41:01 10.xxx.xxx.xxx OPTIONS /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 200 0 0 500 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 46 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32 - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 218 2016-06-20 05:41:16 10.xxx.xxx.xxx PROPFIND /patch-{682810b5-36dc-4e5d-81dd-6c02cd8f445b}-patchtoolsd.exe - 80 - 159.82.156.241 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 64 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /N$cl64.exe - 80 - 159.xxx.xxx.xxx 1 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /C$rome.dll - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 296 Stunell.conf: cert = extwebsvr_ver.pem ; Some performance tuning socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Peer Authentication verify = 2 CAfile = extwebsvr_root.pem ; Debug mode - useful for troubleshooting debug = 7 output = stunnel.log ; Client mode client = yes ; Setup tunnels to each EMS node [CLIxxxxxxxx)] accept=127.0.0.1:9001 connect=10.xxx.xxx.xxx:9009 Stunnel.log: 2016.06.20 09:17:39 LOG7[main]: No limit detected for the number of clients 2016.06.20 09:17:39 LOG5[main]: stunnel 5.27 on x86-pc-msvc-1500 platform 2016.06.20 09:17:39 LOG5[main]: Compiled/running with OpenSSL 1.0.2e-fips 3 Dec 2015 2016.06.20 09:17:39 LOG5[main]: Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI 2016.06.20 09:17:39 LOG7[main]: errno: (*_errno()) 2016.06.20 09:17:39 LOG5[main]: Reading configuration from file stunnel.conf 2016.06.20 09:17:39 LOG7[ui]: GUI message loop initialized 2016.06.20 09:17:39 LOG7[cron]: Cron thread initialized 2016.06.20 09:17:39 LOG5[main]: UTF-8 byte order mark detected 2016.06.20 09:17:39 LOG6[main]: Initializing service [CLI9F529A0A] 2016.06.20 09:17:39 LOG6[main]: Loading certificate from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Certificate loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Loading private key from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Private key loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG7[main]: Private key check succeeded 2016.06.20 09:17:39 LOG4[main]: Service [CLIxxxxxxxx] uses "verify = 2" without subject checks 2016.06.20 09:17:39 LOG4[main]: Use "checkHost" or "checkIP" to restrict trusted certificates 2016.06.20 09:17:39 LOG7[main]: SSL options: 0x03000004 (+0x03000000, -0x00000000) 2016.06.20 09:17:39 LOG5[main]: Configuration successful Thanks for your help, Michael From: Josealf.rm [mailto:[email protected]] Sent: Monday, June 20, 2016 8:01 AM To: J. Michael Drew Cc: stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Michael, Is your stunnel running as a service? Please post sanitized logs and configuration for a better diagnostic ... Regards Jose El 20 jun 2016, a las 6:39, J. Michael Drew <jmichaeldrew(a)hotmail.com> escribió: Hi, I have a website on IIS8 and am using stunnel to forward requests over 9009 inside to my application server. When I log in to the IIS server and stay logged in everything works as expected. When I log off the IIS 8 web server my site is unreachable with a “service is unavailable”. Can someone help me? Sincere thanks, Michael _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

2 1

Re: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit
by J. Michael Drew 22 Jun '16

22 Jun '16

.Jose, I appreciate your patience. Internet - Clients : 443 -> : https://website.company.com/website/ ________Firewall___________ Web\Presentation Layer 2 Win 2012 Webservers (443) not currently connected to the production LB, application needs to work before connecting to LB. This configuration is first time on 64 bit OS… Win 2012. IIS 8 running Jakarta ISAPI Filter\Stunnel to redirect 9001 to 9009: _________Firewall\App Layer________ Port 9009 Connects to App server running Apache Application is working as expected as long as I am logged in to the IIS 8 server. I can telnet to the APP layer over 9009 and I can reach these websites externally as expected. Firewalls are good. Please let me know any other information you need. Thank you again, Michael From: Jose Alf. [mailto:[email protected]] Sent: Monday, June 20, 2016 4:32 PM To: J. Michael Drew Subject: Re: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit Michael, Please take this in constructive way. I am trying to help, but it looks like you need to do some reading and homework. Please check http://catb.org/~esr/faqs/smart-questions.html <http://catb.org/%7Eesr/faqs/smart-questions.html> I suggest you draw a picture of your environment and explain well what you're trying to achieve. Show your client, your backend server, your stunnel server, include the IPs and ports they're listening to and everything should be easier. Don't forget any firewalls thay may be in the way. Regards, Jose. _____ From: J. Michael Drew <jmichaeldrew(a)hotmail.com> To: 'Jose Alf.' <josealf(a)rocketmail.com> Sent: Monday, June 20, 2016 1:00 PM Subject: RE: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit Hi Jose, I made the changes you suggested, but I am still getting the same behavior. My external address is: https://website.company.com/website I am not adding any ports to the address. Thanks so much for your help! Michael From: Jose Alf. [mailto:[email protected]] Sent: Monday, June 20, 2016 12:10 PM To: J. Michael Drew; stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit Michael, I guess what you want to do is to be able to connect to your internal Webserver via your Win2012 stunnel proxy using a URL like: https://yourwin2012dnsname:9001/ <https://yourwin2012dnsname:9009/> if that is correct, I suggest to adjust your configuration as follows: 1. Your stunnel mode must be server, not client. So adjust your service stanza as follows: [CLI9F529A0A] accept=9001 connect=10.xxx.xxx.xxx:9009 client=no 2. In your current configuration stunnel is listening only in the localhost ipv4 address (127.0.0.1). Therefore, you can only connect when you are logged on the server, you can't connect from a remote client. Hope this helps you clarify what's going on. Regards, Jose From: J. Michael Drew [mailto:[email protected]] Sent: Monday, June 20, 2016 9:54 AM To: 'Josealf.rm' Subject: RE: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Jose, Once logged in to the server I can open a browser on the server and connect through https://localhost/website and I can log in to the site externally as expected. Here are the log files from IIS and stunnel where stunnel is running as a service on the Windows 2012 server: When I am not logged in to the server it fails: #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 00:30:21 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 00:30:21 159.xxx.xxx.xxx HEAD / - 443 - 190.xxx.xxx.xxx - - 200 0 0 1218 #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 05:41:01 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 05:41:01 10.xxx.xxx.xxx OPTIONS /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 200 0 0 500 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 46 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32 - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 218 2016-06-20 05:41:16 10.xxx.xxx.xxx PROPFIND /patch-{682810b5-36dc-4e5d-81dd-6c02cd8f445b}-patchtoolsd.exe - 80 - 159.82.156.241 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 64 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /N$cl64.exe - 80 - 159.xxx.xxx.xxx 1 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /C$rome.dll - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 296 Stunell.conf: cert = extwebsvr_ver.pem ; Some performance tuning socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Peer Authentication verify = 2 CAfile = extwebsvr_root.pem ; Debug mode - useful for troubleshooting debug = 7 output = stunnel.log ; Client mode client = yes ; Setup tunnels to each EMS node [CLIxxxxxxxx)] accept=127.0.0.1:9001 connect=10.xxx.xxx.xxx:9009 Stunnel.log: 2016.06.20 09:17:39 LOG7[main]: No limit detected for the number of clients 2016.06.20 09:17:39 LOG5[main]: stunnel 5.27 on x86-pc-msvc-1500 platform 2016.06.20 09:17:39 LOG5[main]: Compiled/running with OpenSSL 1.0.2e-fips 3 Dec 2015 2016.06.20 09:17:39 LOG5[main]: Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI 2016.06.20 09:17:39 LOG7[main]: errno: (*_errno()) 2016.06.20 09:17:39 LOG5[main]: Reading configuration from file stunnel.conf 2016.06.20 09:17:39 LOG7[ui]: GUI message loop initialized 2016.06.20 09:17:39 LOG7[cron]: Cron thread initialized 2016.06.20 09:17:39 LOG5[main]: UTF-8 byte order mark detected 2016.06.20 09:17:39 LOG6[main]: Initializing service [CLI9F529A0A] 2016.06.20 09:17:39 LOG6[main]: Loading certificate from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Certificate loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Loading private key from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Private key loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG7[main]: Private key check succeeded 2016.06.20 09:17:39 LOG4[main]: Service [CLIxxxxxxxx] uses "verify = 2" without subject checks 2016.06.20 09:17:39 LOG4[main]: Use "checkHost" or "checkIP" to restrict trusted certificates 2016.06.20 09:17:39 LOG7[main]: SSL options: 0x03000004 (+0x03000000, -0x00000000) 2016.06.20 09:17:39 LOG5[main]: Configuration successful Thanks for your help, Michael From: Josealf.rm [mailto:[email protected]] Sent: Monday, June 20, 2016 8:01 AM To: J. Michael Drew Cc: stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Michael, Is your stunnel running as a service? Please post sanitized logs and configuration for a better diagnostic ... Regards Jose El 20 jun 2016, a las 6:39, J. Michael Drew <jmichaeldrew(a)hotmail.com> escribió: Hi, I have a website on IIS8 and am using stunnel to forward requests over 9009 inside to my application server. When I log in to the IIS server and stay logged in everything works as expected. When I log off the IIS 8 web server my site is unreachable with a “service is unavailable”. Can someone help me? Sincere thanks, Michael _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

2 1

MAC OS 32 bits
by Francisco Pereira 21 Jun '16

21 Jun '16

Is stunnel compatible with Mac Os 32-bit?Which installer should I consider for that?

1 0

FW: FW: Stunnel with IIS8 on server 2012 64 bit
by J. Michael Drew 20 Jun '16

20 Jun '16

From: J. Michael Drew [mailto:[email protected]] Sent: Monday, June 20, 2016 2:01 PM To: 'Jose Alf.' Subject: RE: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit Hi Jose, I made the changes you suggested, but I am still getting the same behavior. My external address is: https://website.company.com/website I am not adding any ports to the address. Thanks so much for your help! Michael From: Jose Alf. [mailto:[email protected]] Sent: Monday, June 20, 2016 12:10 PM To: J. Michael Drew; stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] FW: Stunnel with IIS8 on server 2012 64 bit Michael, I guess what you want to do is to be able to connect to your internal Webserver via your Win2012 stunnel proxy using a URL like: https://yourwin2012dnsname:9001/ <https://yourwin2012dnsname:9009/> if that is correct, I suggest to adjust your configuration as follows: 1. Your stunnel mode must be server, not client. So adjust your service stanza as follows: [CLI9F529A0A] accept=9001 connect=10.xxx.xxx.xxx:9009 client=no 2. In your current configuration stunnel is listening only in the localhost ipv4 address (127.0.0.1). Therefore, you can only connect when you are logged on the server, you can't connect from a remote client. Hope this helps you clarify what's going on. Regards, Jose From: J. Michael Drew [mailto:[email protected]] Sent: Monday, June 20, 2016 9:54 AM To: 'Josealf.rm' Subject: RE: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Jose, Once logged in to the server I can open a browser on the server and connect through https://localhost/website and I can log in to the site externally as expected. Here are the log files from IIS and stunnel where stunnel is running as a service on the Windows 2012 server: When I am not logged in to the server it fails: #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 00:30:21 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 00:30:21 159.xxx.xxx.xxx HEAD / - 443 - 190.xxx.xxx.xxx - - 200 0 0 1218 #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 05:41:01 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 05:41:01 10.xxx.xxx.xxx OPTIONS /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 200 0 0 500 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 46 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32 - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 218 2016-06-20 05:41:16 10.xxx.xxx.xxx PROPFIND /patch-{682810b5-36dc-4e5d-81dd-6c02cd8f445b}-patchtoolsd.exe - 80 - 159.82.156.241 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 64 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /N$cl64.exe - 80 - 159.xxx.xxx.xxx 1 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /C$rome.dll - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 296 Stunell.conf: cert = extwebsvr_ver.pem ; Some performance tuning socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Peer Authentication verify = 2 CAfile = extwebsvr_root.pem ; Debug mode - useful for troubleshooting debug = 7 output = stunnel.log ; Client mode client = yes ; Setup tunnels to each EMS node [CLIxxxxxxxx)] accept=127.0.0.1:9001 connect=10.xxx.xxx.xxx:9009 Stunnel.log: 2016.06.20 09:17:39 LOG7[main]: No limit detected for the number of clients 2016.06.20 09:17:39 LOG5[main]: stunnel 5.27 on x86-pc-msvc-1500 platform 2016.06.20 09:17:39 LOG5[main]: Compiled/running with OpenSSL 1.0.2e-fips 3 Dec 2015 2016.06.20 09:17:39 LOG5[main]: Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI 2016.06.20 09:17:39 LOG7[main]: errno: (*_errno()) 2016.06.20 09:17:39 LOG5[main]: Reading configuration from file stunnel.conf 2016.06.20 09:17:39 LOG7[ui]: GUI message loop initialized 2016.06.20 09:17:39 LOG7[cron]: Cron thread initialized 2016.06.20 09:17:39 LOG5[main]: UTF-8 byte order mark detected 2016.06.20 09:17:39 LOG6[main]: Initializing service [CLI9F529A0A] 2016.06.20 09:17:39 LOG6[main]: Loading certificate from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Certificate loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Loading private key from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Private key loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG7[main]: Private key check succeeded 2016.06.20 09:17:39 LOG4[main]: Service [CLIxxxxxxxx] uses "verify = 2" without subject checks 2016.06.20 09:17:39 LOG4[main]: Use "checkHost" or "checkIP" to restrict trusted certificates 2016.06.20 09:17:39 LOG7[main]: SSL options: 0x03000004 (+0x03000000, -0x00000000) 2016.06.20 09:17:39 LOG5[main]: Configuration successful Thanks for your help, Michael From: Josealf.rm [mailto:[email protected]] Sent: Monday, June 20, 2016 8:01 AM To: J. Michael Drew Cc: stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Michael, Is your stunnel running as a service? Please post sanitized logs and configuration for a better diagnostic ... Regards Jose El 20 jun 2016, a las 6:39, J. Michael Drew <jmichaeldrew(a)hotmail.com> escribió: Hi, I have a website on IIS8 and am using stunnel to forward requests over 9009 inside to my application server. When I log in to the IIS server and stay logged in everything works as expected. When I log off the IIS 8 web server my site is unreachable with a “service is unavailable”. Can someone help me? Sincere thanks, Michael _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

1 0

Stunnel connection host address not appearing in sent message.
by Donald F. Coffin 20 Jun '16

20 Jun '16

I am using stunnel to enable SoapUI Mock Servers to support SSL connections. I am attempting to send the following SSL message: https://services.greenbuttondata.org/oauth/token?grant_type=client_credentia ls <https://services.greenbuttondata.org/oauth/token?grant_type=client_credenti als&scope=FB=39_40> &scope=FB=39_40 Using Wireshark, it appears the message being sent is POST /oauth/token?grant_type=client_credentials&scope=FB=39_40 which is receiving the following response: Error 404 (Not Found) The contents of the stunnel.conf file is: ; ***************************************************************** : * Service definitions (at least one service has to be defined) * ; ***************************************************************** ; ***************************************************************** ; * Resource Server * ; ***************************************************************** [resourceServer] accept=localhost:8080 connect=services.greenbuttondata.org:443 ciphers=AES128-SHA client=yes cert=/etc/stunnel/stunnel.pem verify=0 ; ***************************************************************** ; * Authorization Server * ; ***************************************************************** [authorizationServer] accept=localhost:8082 connect=services.greenbuttondata.org:443 ciphers=AES128-SHA client=yes cert=/etc/stunnel/stunnel.pem verify=0 [tpserver] accept=localhost:8444 connect=localhost:8081 cert=/etc/stunnel/stunnel.pem ciphers=AES128-SHA client=no verify=0 The HTTP log from SoapUI shows the following: "POST /oauth/token?grant_type=client_credentials&scope=FB=36_40 HTTP/1.1" "Accept-Encoding: gzip.deflate" "Content-Type: application/json" "Authorization: Basic UkVHSV... " (not shown for security) "Content-Length: 0" "Host: localhost:8082" "Connection: Keep-Alive" "User-Agent: Apache-HttpClient/4.1.1 (java 1.5)" "HTTP/1.1 404 Not Found" "Content-Type: text/html: charset=UTF-8" "Server: ghs" "Content-Length: 1623" "X-XSS-Protection: 1; mode=block" "X-Frame-Options: SAMEORIGIN" Through experimentation, the request only fails when using the stunnel proxy server, but works when sent directly to the targeted endpoint. Any assistance would be greatly appreciated. Best regards, Don Donald F. Coffin Technical Manager Green Button Alliance 2335 Dunwoody Crossing Suite E Dunwoody, GA 30338-8221 http://www.greenbuttonalliance.org <http://www.greenbuttonalliance.org/> (949) 636-8571 Mobile

1 0

FW: Stunnel with IIS8 on server 2012 64 bit
by J. Michael Drew 20 Jun '16

20 Jun '16

From: J. Michael Drew [mailto:[email protected]] Sent: Monday, June 20, 2016 9:54 AM To: 'Josealf.rm' Subject: RE: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Jose, Once logged in to the server I can open a browser on the server and connect through https://localhost/website and I can log in to the site externally as expected. Here are the log files from IIS and stunnel where stunnel is running as a service on the Windows 2012 server: When I am not logged in to the server it fails: #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 00:30:21 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 00:30:21 159.xxx.xxx.xxx HEAD / - 443 - 190.xxx.xxx.xxx - - 200 0 0 1218 #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 05:41:01 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 05:41:01 10.xxx.xxx.xxx OPTIONS /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 200 0 0 500 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 46 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32 - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 218 2016-06-20 05:41:16 10.xxx.xxx.xxx PROPFIND /patch-{682810b5-36dc-4e5d-81dd-6c02cd8f445b}-patchtoolsd.exe - 80 - 159.82.156.241 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 64 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /N$cl64.exe - 80 - 159.xxx.xxx.xxx 1 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /C$rome.dll - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 296 Stunell.conf: cert = extwebsvr_ver.pem ; Some performance tuning socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Peer Authentication verify = 2 CAfile = extwebsvr_root.pem ; Debug mode - useful for troubleshooting debug = 7 output = stunnel.log ; Client mode client = yes ; Setup tunnels to each EMS node [CLIxxxxxxxx)] accept=127.0.0.1:9001 connect=10.xxx.xxx.xxx:9009 Stunnel.log: 2016.06.20 09:17:39 LOG7[main]: No limit detected for the number of clients 2016.06.20 09:17:39 LOG5[main]: stunnel 5.27 on x86-pc-msvc-1500 platform 2016.06.20 09:17:39 LOG5[main]: Compiled/running with OpenSSL 1.0.2e-fips 3 Dec 2015 2016.06.20 09:17:39 LOG5[main]: Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI 2016.06.20 09:17:39 LOG7[main]: errno: (*_errno()) 2016.06.20 09:17:39 LOG5[main]: Reading configuration from file stunnel.conf 2016.06.20 09:17:39 LOG7[ui]: GUI message loop initialized 2016.06.20 09:17:39 LOG7[cron]: Cron thread initialized 2016.06.20 09:17:39 LOG5[main]: UTF-8 byte order mark detected 2016.06.20 09:17:39 LOG6[main]: Initializing service [CLI9F529A0A] 2016.06.20 09:17:39 LOG6[main]: Loading certificate from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Certificate loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Loading private key from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Private key loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG7[main]: Private key check succeeded 2016.06.20 09:17:39 LOG4[main]: Service [CLIxxxxxxxx] uses "verify = 2" without subject checks 2016.06.20 09:17:39 LOG4[main]: Use "checkHost" or "checkIP" to restrict trusted certificates 2016.06.20 09:17:39 LOG7[main]: SSL options: 0x03000004 (+0x03000000, -0x00000000) 2016.06.20 09:17:39 LOG5[main]: Configuration successful Thanks for your help, Michael From: Josealf.rm [mailto:[email protected]] Sent: Monday, June 20, 2016 8:01 AM To: J. Michael Drew Cc: stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Michael, Is your stunnel running as a service? Please post sanitized logs and configuration for a better diagnostic ... Regards Jose El 20 jun 2016, a las 6:39, J. Michael Drew <jmichaeldrew(a)hotmail.com> escribió: Hi, I have a website on IIS8 and am using stunnel to forward requests over 9009 inside to my application server. When I log in to the IIS server and stay logged in everything works as expected. When I log off the IIS 8 web server my site is unreachable with a “service is unavailable”. Can someone help me? Sincere thanks, Michael _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

2 1

FW: Stunnel with IIS8 on server 2012 64 bit
by J. Michael Drew 20 Jun '16

20 Jun '16

From: J. Michael Drew [mailto:[email protected]] Sent: Monday, June 20, 2016 9:54 AM To: 'Josealf.rm' Subject: RE: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Jose, Once logged in to the server I can open a browser on the server and connect through https://localhost/website and I can log in to the site externally as expected. Here are the log files from IIS and stunnel where stunnel is running as a service on the Windows 2012 server: When I am not logged in to the server it fails: #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 00:30:21 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 00:30:21 159.xxx.xxx.xxx HEAD / - 443 - 190.xxx.xxx.xxx - - 200 0 0 1218 #Software: Microsoft Internet Information Services 8.5 #Version: 1.0 #Date: 2016-06-20 05:41:01 #Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs(Referer) sc-status sc-substatus sc-win32-status time-taken 2016-06-20 05:41:01 10.xxx.xxx.xxx OPTIONS /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 200 0 0 500 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32/NTDLL.DLL - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 46 2016-06-20 05:41:01 10.xxx.xxx.xxx PROPFIND /C$/windows/system32 - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 218 2016-06-20 05:41:16 10.xxx.xxx.xxx PROPFIND /patch-{682810b5-36dc-4e5d-81dd-6c02cd8f445b}-patchtoolsd.exe - 80 - 159.82.156.241 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 64 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /N$cl64.exe - 80 - 159.xxx.xxx.xxx 1 Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 62 2016-06-20 05:41:27 10.xxx.xxx.xxx PROPFIND /C$rome.dll - 80 - 159.xxx.xxx.xxx Microsoft-WebDAV-MiniRedir/6.1.7601 - 404 0 2 296 Stunell.conf: cert = extwebsvr_ver.pem ; Some performance tuning socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Peer Authentication verify = 2 CAfile = extwebsvr_root.pem ; Debug mode - useful for troubleshooting debug = 7 output = stunnel.log ; Client mode client = yes ; Setup tunnels to each EMS node [CLIxxxxxxxx)] accept=127.0.0.1:9001 connect=10.xxx.xxx.xxx:9009 Stunnel.log: 2016.06.20 09:17:39 LOG7[main]: No limit detected for the number of clients 2016.06.20 09:17:39 LOG5[main]: stunnel 5.27 on x86-pc-msvc-1500 platform 2016.06.20 09:17:39 LOG5[main]: Compiled/running with OpenSSL 1.0.2e-fips 3 Dec 2015 2016.06.20 09:17:39 LOG5[main]: Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI 2016.06.20 09:17:39 LOG7[main]: errno: (*_errno()) 2016.06.20 09:17:39 LOG5[main]: Reading configuration from file stunnel.conf 2016.06.20 09:17:39 LOG7[ui]: GUI message loop initialized 2016.06.20 09:17:39 LOG7[cron]: Cron thread initialized 2016.06.20 09:17:39 LOG5[main]: UTF-8 byte order mark detected 2016.06.20 09:17:39 LOG6[main]: Initializing service [CLI9F529A0A] 2016.06.20 09:17:39 LOG6[main]: Loading certificate from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Certificate loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Loading private key from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG6[main]: Private key loaded from file: extwebsvr_ver.pem 2016.06.20 09:17:39 LOG7[main]: Private key check succeeded 2016.06.20 09:17:39 LOG4[main]: Service [CLIxxxxxxxx] uses "verify = 2" without subject checks 2016.06.20 09:17:39 LOG4[main]: Use "checkHost" or "checkIP" to restrict trusted certificates 2016.06.20 09:17:39 LOG7[main]: SSL options: 0x03000004 (+0x03000000, -0x00000000) 2016.06.20 09:17:39 LOG5[main]: Configuration successful Thanks for your help, Michael From: Josealf.rm [mailto:[email protected]] Sent: Monday, June 20, 2016 8:01 AM To: J. Michael Drew Cc: stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] Stunnel with IIS8 on server 2012 64 bit Michael, Is your stunnel running as a service? Please post sanitized logs and configuration for a better diagnostic ... Regards Jose El 20 jun 2016, a las 6:39, J. Michael Drew <jmichaeldrew(a)hotmail.com> escribió: Hi, I have a website on IIS8 and am using stunnel to forward requests over 9009 inside to my application server. When I log in to the IIS server and stay logged in everything works as expected. When I log off the IIS 8 web server my site is unreachable with a “service is unavailable”. Can someone help me? Sincere thanks, Michael _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

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Stunnel with IIS8 on server 2012 64 bit
by J. Michael Drew 20 Jun '16

20 Jun '16

Hi, I have a website on IIS8 and am using stunnel to forward requests over 9009 inside to my application server. When I log in to the IIS server and stay logged in everything works as expected. When I log off the IIS 8 web server my site is unreachable with a "service is unavailable". Can someone help me? Sincere thanks, Michael

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Compiling for Windows CE
by Bart de Waal 15 Jun '16

15 Jun '16

Hello, Are there more up to date instructions for compiling on Windows CE? I found the version here that works but is old and missing one of the features I need to connect to the server: http://www.usenix.org.uk/mirrors/stunnel/wce/ The instructions for building say you need evt2002web_min.exe, which as far as I can tell is no longer available. I can't get the newer version (evc4.exe) to work on a modern windows system (or under linux using wine) either. I think the CE version is still being used, as I saw references to it in the latest changelog. If someone has a more modern guide to building it I would appreciate it. Thanks, Bart de Waal

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SSL Error
by Randall LeJeune 14 Jun '16

14 Jun '16

Hello. I am getting the following error when I try to run stunnel: [root@doadmzqas stunnel]# stunnel [ ] Clients allowed=31999 [.] stunnel 5.17 on powerpc-ibm-aix5.2.0.0 platform [.] Compiled/running with OpenSSL 1.0.1s 1 Mar 2016 [.] Threading:PTHREAD Sockets:POLL,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI [ ] errno: (*_Errno()) [.] Reading configuration from file /opt/freeware/etc/stunnel/stunnel.conf [.] UTF-8 byte order mark not detected [.] FIPS mode disabled [ ] Compression disabled [ ] Snagged 64 random bytes from /home/root/.rnd [ ] Wrote 1024 new random bytes to /home/root/.rnd [ ] PRNG seeded successfully [ ] Initializing service [sapdp3202] [ ] Loading certificate from file: /opt/freeware/etc/stunnel/stunnel.pem [!] error queue: 140DC002: error:140DC002:SSL routines:SSL_CTX_use_certificate_chain_file:system lib [!] error queue: 20074002: error:20074002:BIO routines:FILE_CTRL:system lib [!] SSL_CTX_use_certificate_chain_file: 2001002: error:02001002:system library:fopen:No such file or directory [!] Service [sapdp3202]: Failed to initialize SSL context The version is 5.17 as you can see above. My config file looks like this: ; Log file (enable for troubleshooting) output = /var/log/stunnel.log ; SSL Certificate and key files cert = /opt/freeware/etc/stunnel/stunnel.pem key = /opt/freeware/etc/stunnel/stunnel.key ; Restrict to FIPS compliant ciphers only ciphers = FIPS ; Force the SSL version to TLSv1 only sslVersion = TLSv1 ; The cipher list and SSL version restrictions above should make us ; _de_facto_ FIPS compliant; our OpenSSL library is *not* FIPS ; compliant, so this cannot be set to 'yes' fips = no [sapdp3202] client = yes accept = 127.0.0.1:3202 connect = doaprdssl.dot.com.gov:4709 The OS is AIX version 7. Does anybody have any idea what this means? Thanks in advance.

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HTTP Strict Transport Security (HSTS) header
by Andrey 06 Jun '16

06 Jun '16

Hi! How I can enable HTTP Strict Transport Security (HSTS) header on stunnel ? Thank you Best regards, Andrey

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openssl warning
by Vpn Bekhar 06 Jun '16

06 Jun '16

Hi, When I install stunnel on my windows server i see this error: stunnel warning can't open config file: /devel/win32/openssl/openssl.cnf please help me thank you so much best regards,

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Broadband and stunnel weird behavior
by Javier 04 Jun '16

04 Jun '16

Hi, I was in doubt if post this or not because I couldn't replicate with enough similarities. But as it may be worth, if it is an actual bug, or help others... why not? Here I have to say that it is more noticeable under Windows 2000. That doesn’t mean doesn’t happen on higher OSs, but, from XP, it isn’t as noticeable. So, please, don’t stop reading here. But, hey, I know it is obsolete, and I know this is long and I’ll understand if you don’t want to read this. I tend to make a lot of “speed tests” because ISPs in my country… well, if you have luck, great, if not, brace yourself with the fights. Maybe as other countries :/ About February my download broadband was enhanced from 30Mb to 50Mb. This is important because is when it started all. With only 30Mb I didn’t notice any problem. “Speed tests“ were fine with “only” 30Mb and all matched the contracted speed and even a bit more. But when I had 50Mb I started to see some annoyances that sometimes was over 50Mb and others... if I had the luck to have 30Mb, it was a miracle. It wasn’t the test used. It was any test, with any technology (flash, html5, java, etc). The difference was just a couple of Mb. But all reflected the problems. They were so random, but something in common is that the tests didn’t show the correct speed at the end of my PC usage day. So I thought, something in memory, maybe, was causing it. But, also, it didn’t happen all days. At the end of the day, sometimes, I topped the 50Mb. And here starts the discarding process. I have a humble Pentium 4 and, even it is not powerful, one of the things I do (that I won’t explain why) is to throttle it (decrease speed). It is one of the first things I discarded, because as higher the broadband, the CPU load at full speed is higher as well. I only noticed a little improvement. This wasn’t the problem. Even I uninstalled the filter driver. So, if the CPU wasn’t the problem, programs should be. And I started with everything. And I left Stunnel as one of the latest. And there was the problem. When Stunnel is open, the speed cuts at about 30Mb. Yeah, I couldn’t believe myself either. After several tests, I discovered that Stunnel isn’t either the problem itself. The problem comes from the amount of services in .conf file. The more you have, the more speed problems you’ll have. I discovered this with the second instance of Stunnel I use for servers, which only has 7 services (3 SNI). I mainly use Stunnel as client for non-SSL aware programs and I have set 16 services. The options of .conf file, or services options, seems to don’t have much effect on speed tests. At the end, one way or another, the result is that if I open Stunnel, I can’t top full speed. I close it and voilà!, even during the same speed test. What is causing it? Probably just Windows 2000, or maybe not. Windows 2000 doesn’t have a connection limit as XP, one of the things I thought about. Anyway, I just wanted to shared this with you, just in case helps or anything. Regards. System specifications: Windows 2000 SP4 // XP SP2 (testing purposes) P4 2.8Ghz RAM 2GB RTL8139 Fast Ethernet Full Duplex

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Re: [stunnel-users] Public domain [PATCH] support environment variables in config file
by Dmitry Bakshaev 31 May '16

31 May '16

2016-05-31 12:02 GMT+04:00 Pierre Delaage <delaage.pierre(a)free.fr>: > Hi Michal, > Did not have a look at the code yet, but should it be possible to replace > envvars usage by some keys in the registry on windows platform and/or > %userprofile%/config-file ? > why not just start stunnel with config parameter on command line? stunnel %USERPROFILE%/stunnel-config-file (windows) stunnel ${HOME}/stunnel-config-file (*nix)

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Re: [stunnel-users] IPv4 and IPv6
by Konstantin Belousov 31 May '16

31 May '16

On Tue, May 31, 2016 at 08:04:24AM +0200, Micha?? Trojnara wrote: > On 31.05.2016 00:42, Konstantin Belousov wrote: > > I have a following configuration for the outgoing connection > > [XXX-1] > > client = yes > > accept = 127.0.0.1:1564 > > connect = some-server:9999 > > local = some-other-address > [cut] > > The socket was created with INET6 address family, but bind was done for > > INET AF. > > This is pretty much expected if "some-server:9999" is an IPv6 address > and "some-other-address" is an IPv4 address. The "local" option indeed > cannot handle a mix of IPv4 and IPv6 "connect" addresses. Usually some-server is the list of addresses, one of them is IPv4, and another is IPv6. This is the only reasonable way to name dual-stack host. > > What do you think might be a proper solution? I would expect that the code which binds the socket for connect(2), matched the address types before binding. A good implementation needs to iterate over the results of getaddrinfo(3) for remote host to try to connect to each returned address. In the same manner, when one outgoing address is attempted to connect to, the getaddrinfo(3) list for the local address would be iterated over, and first matched compatible address selected for binding. It seems that it is enough to match addrinfo pairs by ai_family/ai_socktype/ai_protocol, but you might also need to e.g. pay some attention to filter out IPv4 mapped to IPv6 entries. I am not sure how much additional plumbing is required to have local getaddrinfo(3) result in the local_bind().

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IPv4 and IPv6
by Konstantin Belousov 30 May '16

30 May '16

Hi. I have a following configuration for the outgoing connection [XXX-1] client = yes accept = 127.0.0.1:1564 connect = some-server:9999 local = some-other-address Sometimes, or rather, quite regular, the connection to localhost port 1564 results in immediate connection close and logging the following: May 30 23:06:58 tom stunnel: LOG5[4]: Service [XXX-1] accepted connection from 127.0.0.1:12848 May 30 23:06:58 tom stunnel: LOG3[4]: local_bind (ephemeral port): Invalid argument (22) I traced the syscalls and see the following: 28196 stunnel CALL socket(PF_INET6,SOCK_STREAM,IPPROTO_IP) 28196 stunnel RET socket 10/0xa 28196 stunnel CALL fcntl(0xa,F_GETFL,0) 28196 stunnel RET fcntl 2 28196 stunnel CALL fcntl(0xa,F_SETFL,0x6<O_RDWR|O_NONBLOCK>) 28196 stunnel RET fcntl 0 28196 stunnel CALL fcntl(0xa,F_SETFD,FD_CLOEXEC) 28196 stunnel RET fcntl 0 28196 stunnel CALL bind(0xa,0x802808a6c,0x10) 28196 stunnel STRU struct sockaddr { AF_INET, 176.36.249.139:0 } 28196 stunnel RET bind -1 errno 22 Invalid argument The socket was created with INET6 address family, but bind was done for INET AF. Indeed, both some-server and some-other-address have both A and AAAA records, corresponding addresses are configured and functional. OS is FreeBSD, I was ensured that this combination (INET6 socket and INET bind) is not correct. It probably works sometime when first resolved addresses for names happen to come from the same address family, but when resolvers return different order, the situation above occurs. Disabling ipv6 support makes the connection work reliably, which confirms my observations. I am using stunnel 5.31. Would be nice to have this fixed. Thanks.

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Public domain [PATCH] support environment variables in config file
by Dmitry Bakshaev 28 May '16

28 May '16

the problem frequently occurs on the client side: admin need to configure stunnel for multiple users. every user has own key, certificate, own permissions on file system (for log-files, etc) this patch allow to write flexible config. some examples: cert = %USERPROFILE%\.config\my.pem (windows) cert = ${HOME}/.config/my.pem (other) output = %APPDATA%\stunnel.log (windows) output = ${HOME}/stunnel.log (other) CAfile = %ALLUSERSPROFILE%\ourCAbundle.crt (windows) CAfile = /etc/ssl/certs/ourCAbundle.crt (other, not using variables) "secure" :) random port example: ... [srv1] accept = 127.0.0.1:%SRV1_PORT% (windows) accept = 127.0.0.1:${SRV1_PORT} (other) ... start stunnel (batch-file or shell-script): set SRV1_PORT=%RANDOM% (windows) limitations: 1. don't support unicode on windows (localized usernames, files, etc) 2. only ${NAME} syntax supported on *nix (not $NAME).

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Potential performance degradation moving from Stunnel 5.06 to 5.32
by Mark Brookes 24 May '16

24 May '16

There might be a throughput degradation in the more recent versions of stunnel. I have recently been testing the 5.32 version of stunnel and have noticed that the tps drop quite significantly when moving from 5.06 to 5.32. Im willing to admit it could be something to do with my config or testing. But if anyone could offer some suggestions it would be much appreciated. The config is setup as follows - Stunnel VIP -> Haproxy. (I have configured haproxy to return a simple page). I am using a self signed 1024 bit certificate and the cipher I am using is ECDHE-RSA-AES256-GCM-SHA384 (I also tested with aNull:eNULL:MD5:LOW:HIGH and noticed a similar drop in performance) My Stunnel config is - setuid = stunnel pid = /var/run/stunnel/stunnel.pid debug = local1.0 socket = a:IP_FREEBIND=yes socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 [VIP_Name-1] cert = /root/server1024.pem ciphers = ECDHE-RSA-AES256-GCM-SHA384 accept = 192.168.80.131:443 connect = 127.0.0.1:80 connect = 127.0.0.2:80 delay = no options = CIPHER_SERVER_PREFERENCE options = DONT_INSERT_EMPTY_FRAGMENTS renegotiation = no TIMEOUTclose = 0 My HAProxy config is - global daemon stats socket /var/run/haproxy.stat mode 600 level admin pidfile /var/run/haproxy.pid maxconn 100000 tune.maxrewrite 1024 nbproc 3 defaults #mode http #balance roundrobin timeout connect 4000 timeout client 42000 timeout server 43000 peers loadbalancer_replication peer lbmaster localhost:7778 peer lbslave localhost:7778 listen VIP_Name bind 127.0.0.1:80 transparent #bind 192.168.80.121:80 transparent monitor-uri / mode http errorfile 200 /etc/haproxy/200.http listen VIP_Name_2 monitor-uri / mode http bind 127.0.0.2:80 transparent errorfile 200 /etc/haproxy/200.http All the versions of stunnel mentioned here have been built against Openssl1.0.1s I am using siege to generate the load and issuing the following command - siege https://192.168.80.131 -t1M -c 15 -b The test is stop stunnel service, replace stunnel binary with different version, restart service, run test. The results im seeing are as follows (All results are quoted in transactions per second as reported by siege). v5.06 - 2233 v5.07 - 2229 v5.25 - 2171 v5.30 - 2092 v5.32 - 302 In my results you can see roughly a 200 tps drop from version 5.06 to v5.30 then when we get to v5.32 it drops further. To reiterate the only thing I am changing in my configuration is the stunnel binary. Everything else is remaining the same. Does anyone have any ideas what could be happening? Thankyou Mark

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stunnel on AIX 7
by Randall LeJeune 19 May '16

19 May '16

Does anyone here have any experience in installing and/or running stunnel on AIX? I have version 4.56 installed on my AIX v.7 box, but I checked when this was released and it was over three years ago. I found a version 5.17-2 binary available on Perzl.org but nothing more recent (this version is slightly over a year old). I did try a compile of the newest version but got some errors when I tried to run make (1254-004 error on collect2). Does anyone have any ideas on what would be the best way to proceed here? Thanks in advance.

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PKCS12 support patch
by Dmitry Bakshaev 19 May '16

19 May '16

googling internet about using certificate and keys from PKCS12 file lead to convert it to PEM. it requires some additional utilities (openssl not default windows application) and manual steps to convert. this patch allow using PKCS12 directly from stunnel. example configuration: cert = /home/dab/.certs/my.p12 PKCS12-files detected by file extension (.p12 or .pfx, no case sensetive) and load specially. password prompted if needed, empty password also supported. code based on examples from: https://groups.google.com/forum/#!topic/mailing.openssl.users/iuBmSqwsIG4 http://openssl-users.openssl.narkive.com/J0bR3cMA/ssl-ctx-use-privatekey-fi… patch tested on stunnel working on linux (gentoo: from our overlay http://bbgentoo.ilb.ru/repos/bbgentoo/bbgentoo_overlay/branches/drafts/net-… ) and windows.

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Re: [stunnel-users] Configuring Stunnel to work between client and server - possible certificate issue
by Ludolf Holzheid 18 May '16

18 May '16

On Wed, 2016-05-18 07:24:52 +0000, David Faizulaev wrote: > Do you concatenate the self-signed certificate to the current CA? This self-signed certificate /is/ the current CA certificate, as it is the root of the peer's certificate chain and you trust it. Ludolf -- Ludolf Holzheid Bihl+Wiedemann GmbH Floßwörthstraße 41 68199 Mannheim, Germany Tel: +49 621 33996-0 Fax: +49 621 3392239 mailto:[email protected] http://www.bihl-wiedemann.de Sitz der Gesellschaft: Mannheim Geschäftsführer: Jochen Bihl, Bernhard Wiedemann Amtsgericht Mannheim, HRB 5796

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SSL Labs: Session resumption IDs assigned but not accepted
by Brandon Jackson 17 May '16

17 May '16

Trying to find out why SSL Labs is giving this message Session resumption (caching): No (IDs assigned but not accepted) I have this in the config. sessionCacheSize = 1000 sessionCacheTimeout = 86400 ---------------------------------- Brandon Jackson bojack1437(a)gmail.com

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Re: [stunnel-users] Configuring Stunnel to work between client and server - possible certificate issue
by Ludolf Holzheid 17 May '16

17 May '16

On Tue, 2016-05-17 13:50:04 +0000, David Faizulaev wrote: > Hello, > > I've tried changing the value of 'verify' to 0 & 1, in both cases I get the following: > > 2016.05.17 16:40:25 LOG3[285]: SSL_connect: 14090086: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed > 2016.05.17 16:40:25 LOG5[285]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket > 2016.05.17 16:40:25 LOG4[285]: Possible memory leak at .\crypto\asn1\tasn_new.c:179: 11859 allocations > 2016.05.17 16:40:25 LOG4[285]: Possible memory leak at .\crypto\asn1\asn1_lib.c:408: 11241 allocations Strange. I never used verify = 0, but I had the understanding, stunnel should accept a connection even if the peer's certificate can't be verified. Anyhow, what happens if you add the self-signed certificate presented by the peer to the CA file? Ludolf -- Ludolf Holzheid Bihl+Wiedemann GmbH Floßwörthstraße 41 68199 Mannheim, Germany Tel: +49 621 33996-0 Fax: +49 621 3392239 mailto:[email protected] http://www.bihl-wiedemann.de Sitz der Gesellschaft: Mannheim Geschäftsführer: Jochen Bihl, Bernhard Wiedemann Amtsgericht Mannheim, HRB 5796

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Re: [stunnel-users] Configuring Stunnel to work between client and server - possible certificate issue
by Ludolf Holzheid 17 May '16

17 May '16

On Tue, 2016-05-17 13:33:31 +0000, David Faizulaev wrote: > Between each certificate block I have the following block: > > Bag Attributes > friendlyName: trustcenterclass2caii > 2.16.840.1.113894.746875.1.1: <Unsupported tag 6> > subject=/C=DE/O=TC TrustCenter GmbH/OU=TC TrustCenter Class 2 CA/CN=TC TrustCenter Class 2 CA II > issuer=/C=DE/O=TC TrustCenter GmbH/OU=TC TrustCenter Class 2 CA/CN=TC TrustCenter Class 2 CA II > > possible cause? No, this should be ignored as a comment. But you instructed stunnel to check the peer's certificate against the trusted ones (verify = 2), and the certificate chain the peer presents ends with a certificate not found in the CA file. Ludolf -- Ludolf Holzheid Bihl+Wiedemann GmbH Floßwörthstraße 41 68199 Mannheim, Germany Tel: +49 621 33996-0 Fax: +49 621 3392239 mailto:[email protected] http://www.bihl-wiedemann.de Sitz der Gesellschaft: Mannheim Geschäftsführer: Jochen Bihl, Bernhard Wiedemann Amtsgericht Mannheim, HRB 5796

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Re: [stunnel-users] Configuring Stunnel to work between client and server - possible certificate issue
by Ludolf Holzheid 17 May '16

17 May '16

On Tue, 2016-05-17 13:24:38 +0000, David Faizulaev wrote: > Logs messages are generated upon connection attempt. Then the server presents a certificate that can't be validated against the trusted certificates stored to the file you specified with CAfile=... Ludolf -- Ludolf Holzheid Bihl+Wiedemann GmbH Floßwörthstraße 41 68199 Mannheim, Germany Tel: +49 621 33996-0 Fax: +49 621 3392239 mailto:[email protected] http://www.bihl-wiedemann.de Sitz der Gesellschaft: Mannheim Geschäftsführer: Jochen Bihl, Bernhard Wiedemann Amtsgericht Mannheim, HRB 5796

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Re: [stunnel-users] Configuring Stunnel to work between client and server - possible certificate issue
by Ludolf Holzheid 17 May '16

17 May '16

On Tue, 2016-05-17 13:08:33 +0000, David Faizulaev wrote: > Latest update: > After further investigation, it became evident that Stunnel should run as client. > Therefore, I've converted my existing certs file (from my application) into a PEM file. > The file includes -----BEGIN CERTIFICATE----- & -----END CERTIFICATE-----. > > But I still get an error: > > 2016.05.17 15:57:24 LOG4[281]: CERT: Pre-verification error: self signed certificate in certificate chain > 2016.05.17 15:57:24 LOG4[281]: Rejected by CERT at depth=1: CN=NextnineCA > 2016.05.17 15:57:24 LOG3[281]: SSL_connect: 14090086: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed > > Here is the current configuration: > > [custom] > client = yes > accept = 127.0.0.1:8449 > connect = 192.168.220.62:443 > verify = 2 > CAfile = myapp.pem David, CAfile should point to a list of trusted certificates. The file(s) for your pair of certificate and key should be specified with cert=... (and key=..., if certificate and key are stored to separate files). Are the log messages generated at stunnel startup or at connection establishment? Ludolf -- Ludolf Holzheid Bihl+Wiedemann GmbH Floßwörthstraße 41 68199 Mannheim, Germany Tel: +49 621 33996-0 Fax: +49 621 3392239 mailto:[email protected] http://www.bihl-wiedemann.de Sitz der Gesellschaft: Mannheim Geschäftsführer: Jochen Bihl, Bernhard Wiedemann Amtsgericht Mannheim, HRB 5796

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Re: [stunnel-users] Configuring Stunnel to work between client and server - possible certificate issue
by Ludolf Holzheid 17 May '16

17 May '16

On Tue, 2016-05-17 11:13:26 +0000, David Faizulaev wrote: > I see, I have a keystore file for the server, can it be set as KEY ? can I convert keystore to PEM? I don't know. Some key/certificate repositories don't allow to export private keys. Maybe there is a PKCS11 plug-in for OpenSSL to access the keystore. If this is the case, you don't have to export your private key. But again, I don't know. > Additionally, I've thought about configuring Stunnel in client mode. > Here is the configuration: > [..] Running stunnel in client or server mode makes no difference w.r.t. certificate and key files. As long as stunnel is not able to access your private key, the client mode won't work either. HTH, Ludolf -- Ludolf Holzheid Bihl+Wiedemann GmbH Floßwörthstraße 41 68199 Mannheim, Germany Tel: +49 621 33996-0 Fax: +49 621 3392239 mailto:[email protected] http://www.bihl-wiedemann.de Sitz der Gesellschaft: Mannheim Geschäftsführer: Jochen Bihl, Bernhard Wiedemann Amtsgericht Mannheim, HRB 5796

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Re: [stunnel-users] Configuring Stunnel to work between client and server - possible certificate issue
by Ludolf Holzheid 17 May '16

17 May '16

On Tue, 2016-05-17 08:29:17 +0000, David Faizulaev wrote: > Hello Ludolf, > > I've printed the content of certificate file and the lines: "-----BEGIN CERTIFICATE-----" "-----END CERTIFICATE-----" exist. > In addition, I've compared the default certificate provided by Stunnel with the one I wish to use, they're structure is identical. Hello David, Please reply to the list, so others are able to comment too. I don't know the 'default certificate provided by Stunnel'. I expect it to be depending on the distribution. However, if there are "BEGIN/END CERTIFICATE" lines in your file, but no "BEGIN/END RSA PRIVATE KEY", then the file is in PEM format, but the key is missing. Maybe you have separate files for private key and certificate. If this is the case, you may either concatenate key and certificate to a single file or specify both files in the stunnel configuration: >> key = my-private-key.pem >> cert = my-certificate.pem Ludolf -- Ludolf Holzheid Bihl+Wiedemann GmbH Floßwörthstraße 41 68199 Mannheim, Germany Tel: +49 621 33996-0 Fax: +49 621 3392239 mailto:[email protected] http://www.bihl-wiedemann.de Sitz der Gesellschaft: Mannheim Geschäftsführer: Jochen Bihl, Bernhard Wiedemann Amtsgericht Mannheim, HRB 5796

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Configuring Stunnel to work between client and server - possible certificate issue
by David Faizulaev 17 May '16

17 May '16

Hello, I've found Stunnel as a potential answer to securely moving traffic between two machines. But I'm having some difficulties configuring the software. I've installed it on to the client machine and configured the client to connect to 127.0.0.1:8449 while the Server to which the client needs to connect is 192.168.220.72:8447 In the stunnel.conf I've set the following: [custom] accept = 127.0.0.1:8449 connect = 192.168.220.72:8447 cert = 220.72.cer TIMEOUTclose = 0 Upon initializing Stunnel I get the following error: 2016.05.16 19:14:04 LOG3[main]: error queue: 140B0009: error:140B0009:SSL routines:SSL_CTX_use_PrivateKey_file:PEM lib 2016.05.16 19:14:04 LOG3[main]: SSL_CTX_use_PrivateKey_file: 906D06C: error:0906D06C:PEM routines:PEM_read_bio:no start line 2016.05.16 19:14:04 LOG3[main]: Service [custom]: Failed to initialize SSL context 2016.05.16 19:14:04 LOG3[main]: Failed to reload the configuration file What can be the cause? Thanks in advance. Best Regards, David. [logo_tagline_Sig] David Faizulaev | PL/SQL Developer | T +972 (3) 767 3026<tel:%2B97237673012> | M +972 (54) 7314<tel:%2B972528466746>687 Centralized OT Security Management for Distributed SCADA/ICS Networks P Please consider the environment before printing this e-mail

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TIMEOUTBusy exceeded
by James Brown 17 May '16

17 May '16

Running OpenSSL 1.0.2h, and stunnel 5.32 I often get: ssl_start: s_poll_wait: TIMEOUTbusy exceeded: sending reset 2016.05.17 16:51:46 LOG5[21]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2016.05.17 16:51:46 LOG7[21]: Local descriptor (FD=15) closed 2016.05.17 16:51:46 LOG7[21]: Service [ssmtp2] finished (3 left) 2016.05.17 16:51:46 LOG6[22]: ssl_start: s_poll_wait: TIMEOUTbusy exceeded: sending reset 2016.05.17 16:51:46 LOG5[22]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 2016.05.17 16:51:46 LOG7[22]: Local descriptor (FD=16) closed 2016.05.17 16:51:46 LOG7[22]: Service [ssmtp2] finished (2 left) when a user is sending an email. The email actually makes it to our mail server and gets sent, but the sender’s mail app says that it could not be sent. Upgraded to 5.33b2, no change. It is not all the time - I suspect it is with emails with large attachments. Any suggestions? Mac OS X 10.7.5. Thanks, James.

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stunnel v5.32 (and older) strange session cache behavior on memory (de)allocation
by Adrian Irimescu 16 May '16

16 May '16

I am using stunnel v5.32 compiled on a RHEL 6.7 with openssl-1.0.1e-42.el6.x86_64. The stunnel.conf cache settings are (for testing cache behaviour): *sessionCacheSize = 3sessionCacheTimeout = 60* What I expect is that after sessioncache size is reached, the memory (RSS) allocated to stunnel process does not grow with new sessions which are not in cache. Instead of this the stunnel allocates about 28K for any new session which does not have a stored session in cache and does not free this anymore. For new connections, but with session stored in cache, the memory does not grow. This lead me to a problem in memory deallocation for expired session in internal session cache.( I know that openssl frees expired session cache entries at every 255 sessions). See example below: --> stunnel start (see RSS) USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND stunnel 20655 0.0 0.0 117760 1440 ? Ss 15:49 0:00 /usr/local/bin/stunnel5 --> after 3 sessions with no cache hits stunnel 20655 0.0 0.0 117828 2976 ? Ss 15:49 0:00 /usr/local/bin/stunnel5 - stunnel log 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: New session callback 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: 4 server accept(s) requested 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: 4 server accept(s) succeeded 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: 0 server renegotiation(s) requested 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: 0 session reuse(s) 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: 3 internal session cache item(s) 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: 0 internal session cache fill-up(s) 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: 0 internal session cache miss(es) 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: 0 external session cache hit(s) 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: 0 expired session(s) retrieved 2016.05.11 15:50:57 LOG6[kngHAM6DLUpVRXEqHcUMIt]: SSL accepted: new session negotiated 2016.05.11 15:50:57 LOG7[kngHAM6DLUpVRXEqHcUMIt]: Remove session callback ----------------------------------------------------- --> after another 1 request with cache hit: as you can see no RSS memory was added stunnel 20655 0.0 0.0 117828 2976 ? Ss 15:49 0:00 /usr/local/bin/stunnel5 - stunnel log 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: SSL state (accept): SSLv3 read finished A 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: 5 server accept(s) requested 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: 5 server accept(s) succeeded 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: 0 server renegotiation(s) requested 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: 1 session reuse(s) 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: 3 internal session cache item(s) 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: 1 internal session cache fill-up(s) 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: 0 internal session cache miss(es) 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: 0 external session cache hit(s) 2016.05.11 15:51:57 LOG7[Slq6WdqS97Ox4G8eOKfGg0]: 0 expired session(s) retrieved 2016.05.11 15:51:57 LOG6[Slq6WdqS97Ox4G8eOKfGg0]: SSL accepted: previous session reused ---------------------------------------------------- --> after another 1 request with no cache hit (now we have the first cache fill-up) stunnel 20655 0.0 0.0 117828 3000 ? Ss 15:49 0:00 /usr/local/bin/stunnel5 - stunnel log 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: New session callback 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: 6 server accept(s) requested 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: 6 server accept(s) succeeded 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: 0 server renegotiation(s) requested 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: 1 session reuse(s) 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: 3 internal session cache item(s) 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: 1 internal session cache fill-up(s) 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: 0 internal session cache miss(es) 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: 0 external session cache hit(s) 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: 0 expired session(s) retrieved 2016.05.11 15:53:31 LOG6[P8n33mFxzHVAZEeRwnFccK]: SSL accepted: new session negotiated 2016.05.11 15:53:31 LOG7[P8n33mFxzHVAZEeRwnFccK]: Remove session callback ---------------------------------------------------- --> after another 300 new session with no cache hits and after waiting 1 minute for entries in session cache to expire (as said in documentation openssl must free expired entries every 255 sessions) stunnel 20655 0.0 0.2 117828 11632 ? Ss 15:49 0:03 /usr/local/bin/stunnel5 - stunnel log 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: New session callback 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: 306 server accept(s) requested 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: 306 server accept(s) succeeded 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: 0 server renegotiation(s) requested 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: 1 session reuse(s) 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: 3 internal session cache item(s) 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: 301 internal session cache fill-up(s) 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: 0 internal session cache miss(es) 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: 0 external session cache hit(s) 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: 0 expired session(s) retrieved 2016.05.11 16:13:26 LOG6[vWvoFT1DXuJ9x0eEfFnQBf]: SSL accepted: new session negotiated 2016.05.11 16:13:26 LOG7[vWvoFT1DXuJ9x0eEfFnQBf]: Remove session callback ---------------------------------------------------- What I can see is tat memory grows with ~28K for every new session after session cache was filled and never deallocates this memory. In my production env. this really creates problems because after 2 weeks stunnel fils all 32GB of server RAM. *Anyone has encountered a similar problem? * Of course the stunnel service restart clears the memory but I loose all cache entries and is not acceptable. After some code analysis between different versions of stunnel I can see that between v5.26 ans v5.27 the ctx callbacks functions was changed. In my tests with versions prior to 5.27 I can see that this memory problems does not appear. See logs below: ---- stunnel v5.26 -------- 2016.05.12 13:08:14 LOG5[ui]: stunnel 5.26 on x86_64-unknown-linux-gnu platform 2016.05.12 13:08:14 LOG5[ui]: Compiled/running with OpenSSL 1.0.1e-fips 11 Feb 2013 stunnel 27402 0.0 0.0 117604 1316 ? Ss 13:08 0:00 /usr/local/bin/stunnel5 stunnel 27402 0.0 0.0 117672 2756 ? Ss 13:08 0:00 /usr/local/bin/stunnel5 stunnel 27402 0.0 0.0 117672 2804 ? Ss 13:08 0:00 /usr/local/bin/stunnel5 stunnel 27402 0.0 0.0 117672 2828 ? Ss 13:08 0:00 /usr/local/bin/stunnel5 stunnel 27402 0.0 0.0 117672 2868 ? Ss 13:08 0:00 /usr/local/bin/stunnel5 cache fill-up 2016.05.12 13:11:01 LOG7[FdNYw7uGlV9xNElZSPBfyh]: 0 session reuse(s) 2016.05.12 13:11:01 LOG7[FdNYw7uGlV9xNElZSPBfyh]: 3 internal session cache item(s) 2016.05.12 13:11:01 LOG7[FdNYw7uGlV9xNElZSPBfyh]: 1 internal session cache fill-up(s) stunnel 27402 0.0 0.0 117672 2868 ? Ss 13:08 0:00 /usr/local/bin/stunnel5 stunnel 27402 0.0 0.0 117672 2868 ? Ss 13:08 0:00 /usr/local/bin/stunnel5 after 100 fill-ups 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: SSL state (accept): SSLv3 flush data 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: 107 server accept(s) requested 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: 107 server accept(s) succeeded 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: 0 server renegotiation(s) requested 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: 1 session reuse(s) 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: 3 internal session cache item(s) 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: 102 internal session cache fill-up(s) 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: 0 internal session cache miss(es) 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: 0 external session cache hit(s) 2016.05.12 13:13:55 LOG7[TWO1OFFPYvsW4qdjyJ0IZK]: 0 expired session(s) retrieved 2016.05.12 13:13:55 LOG6[TWO1OFFPYvsW4qdjyJ0IZK]: SSL accepted: new session negotiated stunnel 27402 0.1 0.0 117672 2872 ? Ss 13:08 0:00 /usr/local/bin/stunnel5 after another 100 fill-ups 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: SSL state (accept): SSLv3 flush data 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: 207 server accept(s) requested 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: 207 server accept(s) succeeded 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: 0 server renegotiation(s) requested 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: 1 session reuse(s) 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: 3 internal session cache item(s) 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: 202 internal session cache fill-up(s) 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: 0 internal session cache miss(es) 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: 0 external session cache hit(s) 2016.05.12 13:19:03 LOG7[InwkBBOxJrfptxYx6wXTxU]: 0 expired session(s) retrieved 2016.05.12 13:19:03 LOG6[InwkBBOxJrfptxYx6wXTxU]: SSL accepted: new session negotiated stunnel 27402 0.0 0.0 117672 2872 ? Ss 13:08 0:01 /usr/local/bin/stunnel5 Code: --->>> callbacks in v5.26 L605 *NOEXPORT int sess_new_cb(SSL *ssl, SSL_SESSION *sess) { unsigned char *val, *val_tmp; ssize_t val_len; const unsigned char *session_id; unsigned int session_id_length; val_len=i2d_SSL_SESSION(sess, NULL); val_tmp=val=str_alloc((size_t)val_len); i2d_SSL_SESSION(sess, &val_tmp);#if OPENSSL_VERSION_NUMBER>=0x0090800fL session_id=SSL_SESSION_get_id(sess, &session_id_length);#else session_id=(const unsigned char *)sess->session_id; session_id_length=sess->session_id_length;#endif cache_transfer(SSL_get_SSL_CTX(ssl), CACHE_CMD_NEW, SSL_SESSION_get_timeout(sess), session_id, session_id_length, val, (size_t)val_len, NULL, NULL); str_free(val); return 1; /* leave the session in local cache for reuse */}NOEXPORT SSL_SESSION *sess_get_cb(SSL *ssl, unsigned char *key, int key_len, int *do_copy) { unsigned char *val, *val_tmp=NULL; ssize_t val_len=0; SSL_SESSION *sess; *do_copy = 0; /* allow the session to be freed autmatically */ cache_transfer(SSL_get_SSL_CTX(ssl), CACHE_CMD_GET, 0, key, (size_t)key_len, NULL, 0, &val, (size_t *)&val_len); if(!val) return NULL; val_tmp=val; sess=d2i_SSL_SESSION(NULL,#if OPENSSL_VERSION_NUMBER>=0x0090800fL (const unsigned char **)#endif /* OpenSSL version >= 0.8.0 */ &val_tmp, val_len); str_free(val);* --->>> callbacks in v5.32 /**************************************** session callbacks */ *NOEXPORT int sess_new_cb(SSL *ssl, SSL_SESSION *sess) { CLI *c; s_log(LOG_DEBUG, "New session callback"); c=SSL_get_ex_data(ssl, index_cli); if(c->opt->option.sessiond) cache_new(ssl, sess); return 1; /* leave the session in local cache for reuse */}NOEXPORT SSL_SESSION *sess_get_cb(SSL *ssl,#if OPENSSL_VERSION_NUMBER>=0x10100000L const#endif unsigned char *key, int key_len, int *do_copy) { CLI *c; s_log(LOG_DEBUG, "Get session callback"); *do_copy=0; /* allow the session to be freed automatically */ c=SSL_get_ex_data(ssl, index_cli); if(c->opt->option.sessiond) return cache_get(ssl, key, key_len); return NULL; /* no session to resume */}NOEXPORT void sess_remove_cb(SSL_CTX *ctx, SSL_SESSION *sess) { SERVICE_OPTIONS *opt; s_log(LOG_DEBUG, "Remove session callback"); opt=SSL_CTX_get_ex_data(ctx, index_opt); if(opt->option.sessiond) cache_remove(ctx, sess);}* In production env. I have downgraded today at stunnel v5.26 and memory seems to be OK (untill now). Regards, Adrian Irimescu

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Re: [stunnel-users] stunnel and MSIE
by Brugman, Matt 13 May '16

13 May '16

This is a perfect example of "do not post until you've tried the latest version"... I apologize again, I missed the update. Stunnel is working correctly on my WCE device with all browsers now. Thanks again for the help and the awesome product! Matt -----Original Message----- From: stunnel-users [mailto:[email protected]] On Behalf Of Michal Trojnara Sent: Thursday, May 12, 2016 15:16 To: stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] stunnel and MSIE On 12.05.2016 15:57, Brugman, Matt wrote: > I’ve compiled stunnel for Windows CE 5.0 and 6.0, and am running it on > an ARM device. Which version of stunnel have you compiled? Make sure to use stunnel 5.32, as it contains an important WCE fix. Best regards, Mike

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Re: [stunnel-users] stunnel and MSIE
by Brugman, Matt 12 May '16

12 May '16

I am running 5.31. I apologize; I missed the release of 5.32. I'll build and let you know what I find. Thanks very much! Matt -----Original Message----- From: stunnel-users [mailto:[email protected]] On Behalf Of Michal Trojnara Sent: Thursday, May 12, 2016 15:16 To: stunnel-users(a)stunnel.org Subject: Re: [stunnel-users] stunnel and MSIE On 12.05.2016 15:57, Brugman, Matt wrote: > I’ve compiled stunnel for Windows CE 5.0 and 6.0, and am running it on > an ARM device. Which version of stunnel have you compiled? Make sure to use stunnel 5.32, as it contains an important WCE fix. Best regards, Mike

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stunnel and MSIE
by Brugman, Matt 12 May '16

12 May '16

I've compiled stunnel for Windows CE 5.0 and 6.0, and am running it on an ARM device. It is being used in client mode to secure communications to various external servers with not problems. It is also being used to secure Windows CE's webserver. All of the client mode connections are working flawlessly (thanks for the awesome work, by the way!). The webserver is working properly for all browsers except MSIE 11. Everything I've seen tells me that the problem is not really with stunnel or openssl, but with Internet Explorer. I've spent some time searching the mailing list archives and on Google, but haven't really found a solution to this, besides the obvious "well, don't use IE." I'd love to go with the answer, but some of our users are locked into IE, and let's must make it a given that the choice of browser can't be changed. The browser connects, negotiates a connection, and then exchanges keys and certificates. Using the debug console in IE I see that it sends the initial "GET /". Then the browser sees the response header, but no "body" data. Again, I realize this isn't a specific stunnel issue, but I'm hoping someone on the list has seen a similar issue and found a resolution. I've stripped stunnel.conf down to the very basics (some paths removed for clarity): ; Stunnel config for device debug = 7 output = <path removed>stunnel.log options = -NO_SSLv3 log = overwrite ;********* SERVICES *********** [https-server] client = no accept = 443 connect = 127.0.0.1:9975 cert = <path removed>stunnel.pem delay = yes TIMEOUTbusy = 5 TIMEOUTclose = 0 TIMEOUTidle = 30 Stunnel log output. I do see the "Peer suddenly disconnected" messages, but again; I'm not sure why. The last two lines of the log are the "transfer() loop executes not transferring any data": 3916.06.12 08:21:19 LOG7[ui]: Service [https-server] accepted (FD=9) from 192.168.55.77:12377 3916.06.12 08:21:19 LOG7[ui]: Creating a new thread 3916.06.12 08:21:19 LOG7[ui]: New thread created 3916.06.12 08:21:19 LOG7[0]: Service [https-server] started 3916.06.12 08:21:19 LOG5[0]: Service [https-server] accepted connection from 192.168.55.77:12377 3916.06.12 08:21:19 LOG7[0]: SSL state (accept): before/accept initialization 3916.06.12 08:21:19 LOG7[0]: SNI: no virtual services defined 3916.06.12 08:21:19 LOG7[0]: SSL state (accept): SSLv3 read client hello A 3916.06.12 08:21:19 LOG7[0]: SSL state (accept): SSLv3 write server hello A 3916.06.12 08:21:19 LOG7[0]: SSL state (accept): SSLv3 write certificate A 3916.06.12 08:21:19 LOG7[0]: SSL state (accept): SSLv3 write key exchange A 3916.06.12 08:21:19 LOG7[0]: SSL state (accept): SSLv3 write server done A 3916.06.12 08:21:19 LOG7[0]: SSL state (accept): SSLv3 flush data 3916.06.12 08:21:19 LOG7[0]: SSL state (accept): SSLv3 read client certificate A 3916.06.12 08:21:20 LOG7[0]: SSL state (accept): SSLv3 read client key exchange A 3916.06.12 08:21:20 LOG7[0]: SSL state (accept): SSLv3 read certificate verify A 3916.06.12 08:21:20 LOG7[0]: SSL state (accept): SSLv3 read finished A 3916.06.12 08:21:20 LOG7[0]: SSL state (accept): SSLv3 write change cipher spec A 3916.06.12 08:21:20 LOG7[0]: SSL state (accept): SSLv3 write finished A 3916.06.12 08:21:20 LOG7[0]: SSL state (accept): SSLv3 flush data 3916.06.12 08:21:20 LOG7[0]: New session callback 3916.06.12 08:21:20 LOG7[0]: 1 server accept(s) requested 3916.06.12 08:21:20 LOG7[0]: 1 server accept(s) succeeded 3916.06.12 08:21:20 LOG7[0]: 0 server renegotiation(s) requested 3916.06.12 08:21:20 LOG7[0]: 0 session reuse(s) 3916.06.12 08:21:20 LOG7[0]: 0 internal session cache item(s) 3916.06.12 08:21:20 LOG7[0]: 0 internal session cache fill-up(s) 3916.06.12 08:21:20 LOG7[0]: 0 internal session cache miss(es) 3916.06.12 08:21:20 LOG7[0]: 0 external session cache hit(s) 3916.06.12 08:21:20 LOG7[0]: 0 expired session(s) retrieved 3916.06.12 08:21:20 LOG6[0]: SSL accepted: new session negotiated 3916.06.12 08:21:20 LOG6[0]: No peer certificate received 3916.06.12 08:21:20 LOG6[0]: Negotiated TLSv1.2 ciphersuite ECDHE-RSA-AES256-SHA384 (256-bit encryption) 3916.06.12 08:21:20 LOG7[0]: Compression: null, expansion: null 3916.06.12 08:21:20 LOG6[0]: s_connect: connecting 127.0.0.1:9775 3916.06.12 08:21:20 LOG6[0]: s_connect: connected 127.0.0.1:9775 3916.06.12 08:21:20 LOG6[0]: persistence: 127.0.0.1:9775 cached 3916.06.12 08:21:20 LOG5[0]: Service [https-server] connected remote server from 127.0.0.1:49277 3916.06.12 08:21:20 LOG7[0]: Remote descriptor (FD=11) initialized 3916.06.12 08:21:20 LOG6[0]: SSL socket closed (SSL_read) 3916.06.12 08:21:20 LOG7[0]: Sent socket write shutdown 3916.06.12 08:21:20 LOG5[0]: Connection closed: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 3916.06.12 08:21:20 LOG7[0]: Remote descriptor (FD=11) closed 3916.06.12 08:21:20 LOG7[0]: Local descriptor (FD=9) closed 3916.06.12 08:21:20 LOG7[0]: Service [https-server] finished (0 left) 3916.06.12 08:21:22 LOG7[ui]: Found 1 ready file descriptor(s) 3916.06.12 08:21:22 LOG7[ui]: FD=5 ifds=r-x ofds=--- 3916.06.12 08:21:22 LOG7[ui]: Service [https-server] accepted (FD=13) from 192.168.55.77:30351 3916.06.12 08:21:22 LOG7[ui]: Creating a new thread 3916.06.12 08:21:22 LOG7[ui]: New thread created 3916.06.12 08:21:22 LOG7[1]: Service [https-server] started 3916.06.12 08:21:22 LOG5[1]: Service [https-server] accepted connection from 192.168.55.77:30351 3916.06.12 08:21:22 LOG7[1]: SSL state (accept): before/accept initialization 3916.06.12 08:21:22 LOG7[1]: SNI: no virtual services defined 3916.06.12 08:21:22 LOG7[1]: SSL state (accept): SSLv3 read client hello A 3916.06.12 08:21:22 LOG7[1]: SSL state (accept): SSLv3 write server hello A 3916.06.12 08:21:22 LOG7[1]: SSL state (accept): SSLv3 write change cipher spec A 3916.06.12 08:21:22 LOG7[1]: SSL state (accept): SSLv3 write finished A 3916.06.12 08:21:22 LOG7[1]: SSL state (accept): SSLv3 flush data 3916.06.12 08:21:22 LOG7[1]: SSL state (accept): SSLv3 read finished A 3916.06.12 08:21:22 LOG7[1]: 2 server accept(s) requested 3916.06.12 08:21:22 LOG7[1]: 2 server accept(s) succeeded 3916.06.12 08:21:22 LOG7[1]: 0 server renegotiation(s) requested 3916.06.12 08:21:22 LOG7[1]: 1 session reuse(s) 3916.06.12 08:21:22 LOG7[1]: 1 internal session cache item(s) 3916.06.12 08:21:22 LOG7[1]: 0 internal session cache fill-up(s) 3916.06.12 08:21:22 LOG7[1]: 0 internal session cache miss(es) 3916.06.12 08:21:22 LOG7[1]: 0 external session cache hit(s) 3916.06.12 08:21:22 LOG7[1]: 0 expired session(s) retrieved 3916.06.12 08:21:22 LOG6[1]: SSL accepted: previous session reused 3916.06.12 08:21:22 LOG6[1]: s_connect: connecting 127.0.0.1:9775 3916.06.12 08:21:22 LOG6[1]: s_connect: connected 127.0.0.1:9775 3916.06.12 08:21:22 LOG6[1]: persistence: 127.0.0.1:9775 cached 3916.06.12 08:21:22 LOG5[1]: Service [https-server] connected remote server from 127.0.0.1:49278 3916.06.12 08:21:22 LOG7[1]: Remote descriptor (FD=15) initialized 3916.06.12 08:21:22 LOG6[1]: SSL socket closed (SSL_read) 3916.06.12 08:21:22 LOG7[1]: Sent socket write shutdown 3916.06.12 08:21:22 LOG5[1]: Connection closed: 0 byte(s) sent to SSL, 0 byte(s) sent to socket 3916.06.12 08:21:22 LOG7[1]: Remote descriptor (FD=15) closed 3916.06.12 08:21:22 LOG7[1]: Local descriptor (FD=13) closed 3916.06.12 08:21:22 LOG7[1]: Service [https-server] finished (0 left) 3916.06.12 08:21:22 LOG7[ui]: Found 1 ready file descriptor(s) 3916.06.12 08:21:22 LOG7[ui]: FD=5 ifds=r-x ofds=--- 3916.06.12 08:21:22 LOG7[ui]: Service [https-server] accepted (FD=17) from 192.168.55.77:30352 3916.06.12 08:21:22 LOG7[ui]: Creating a new thread 3916.06.12 08:21:22 LOG7[ui]: New thread created 3916.06.12 08:21:22 LOG7[2]: Service [https-server] started 3916.06.12 08:21:22 LOG5[2]: Service [https-server] accepted connection from 192.168.55.77:30352 3916.06.12 08:21:22 LOG7[2]: SSL state (accept): before/accept initialization 3916.06.12 08:21:22 LOG7[2]: SNI: no virtual services defined 3916.06.12 08:21:22 LOG7[2]: SSL state (accept): SSLv3 read client hello A 3916.06.12 08:21:22 LOG7[2]: SSL state (accept): SSLv3 write server hello A 3916.06.12 08:21:22 LOG7[2]: SSL state (accept): SSLv3 write change cipher spec A 3916.06.12 08:21:22 LOG7[2]: SSL state (accept): SSLv3 write finished A 3916.06.12 08:21:22 LOG7[2]: SSL state (accept): SSLv3 flush data 3916.06.12 08:21:22 LOG7[2]: SSL state (accept): SSLv3 read finished A 3916.06.12 08:21:22 LOG7[2]: 3 server accept(s) requested 3916.06.12 08:21:22 LOG7[2]: 3 server accept(s) succeeded 3916.06.12 08:21:22 LOG7[2]: 0 server renegotiation(s) requested 3916.06.12 08:21:22 LOG7[2]: 2 session reuse(s) 3916.06.12 08:21:22 LOG7[2]: 1 internal session cache item(s) 3916.06.12 08:21:22 LOG7[2]: 0 internal session cache fill-up(s) 3916.06.12 08:21:22 LOG7[2]: 0 internal session cache miss(es) 3916.06.12 08:21:22 LOG7[2]: 0 external session cache hit(s) 3916.06.12 08:21:22 LOG7[2]: 0 expired session(s) retrieved 3916.06.12 08:21:22 LOG6[2]: SSL accepted: previous session reused 3916.06.12 08:21:22 LOG6[2]: s_connect: connecting 127.0.0.1:9775 3916.06.12 08:21:22 LOG6[2]: s_connect: connected 127.0.0.1:9775 3916.06.12 08:21:22 LOG6[2]: persistence: 127.0.0.1:9775 cached 3916.06.12 08:21:22 LOG5[2]: Service [https-server] connected remote server from 127.0.0.1:49279 3916.06.12 08:21:22 LOG7[2]: Remote descriptor (FD=19) initialized 3916.06.12 08:21:22 LOG3[2]: SSL socket closed (SSL_read) with 10137 unsent byte(s) 3916.06.12 08:21:22 LOG5[2]: Connection reset: 239 byte(s) sent to SSL, 553 byte(s) sent to socket 3916.06.12 08:21:22 LOG7[2]: Remote descriptor (FD=19) closed 3916.06.12 08:21:22 LOG7[2]: Local descriptor (FD=17) closed 3916.06.12 08:21:22 LOG7[2]: Service [https-server] finished (0 left) 3916.06.12 08:21:23 LOG7[ui]: Found 1 ready file descriptor(s) 3916.06.12 08:21:23 LOG7[ui]: FD=5 ifds=r-x ofds=--- 3916.06.12 08:21:23 LOG7[ui]: Service [https-server] accepted (FD=21) from 192.168.55.77:30353 3916.06.12 08:21:23 LOG7[ui]: Creating a new thread 3916.06.12 08:21:23 LOG7[ui]: New thread created 3916.06.12 08:21:23 LOG7[3]: Service [https-server] started 3916.06.12 08:21:23 LOG5[3]: Service [https-server] accepted connection from 192.168.55.77:30353 3916.06.12 08:21:23 LOG7[3]: SSL state (accept): before/accept initialization 3916.06.12 08:21:23 LOG7[3]: SNI: no virtual services defined 3916.06.12 08:21:23 LOG7[3]: SSL state (accept): SSLv3 read client hello A 3916.06.12 08:21:23 LOG7[3]: SSL state (accept): SSLv3 write server hello A 3916.06.12 08:21:23 LOG7[3]: SSL state (accept): SSLv3 write change cipher spec A 3916.06.12 08:21:23 LOG7[3]: SSL state (accept): SSLv3 write finished A 3916.06.12 08:21:23 LOG7[3]: SSL state (accept): SSLv3 flush data 3916.06.12 08:21:23 LOG7[3]: SSL state (accept): SSLv3 read finished A 3916.06.12 08:21:23 LOG7[3]: 4 server accept(s) requested 3916.06.12 08:21:23 LOG7[3]: 4 server accept(s) succeeded 3916.06.12 08:21:23 LOG7[3]: 0 server renegotiation(s) requested 3916.06.12 08:21:23 LOG7[3]: 3 session reuse(s) 3916.06.12 08:21:23 LOG7[3]: 1 internal session cache item(s) 3916.06.12 08:21:23 LOG7[3]: 0 internal session cache fill-up(s) 3916.06.12 08:21:23 LOG7[3]: 0 internal session cache miss(es) 3916.06.12 08:21:23 LOG7[3]: 0 external session cache hit(s) 3916.06.12 08:21:23 LOG7[3]: 0 expired session(s) retrieved 3916.06.12 08:21:23 LOG6[3]: SSL accepted: previous session reused 3916.06.12 08:21:23 LOG6[3]: s_connect: connecting 127.0.0.1:9775 3916.06.12 08:21:23 LOG6[3]: s_connect: connected 127.0.0.1:9775 3916.06.12 08:21:23 LOG6[3]: persistence: 127.0.0.1:9775 cached 3916.06.12 08:21:23 LOG5[3]: Service [https-server] connected remote server from 127.0.0.1:49280 3916.06.12 08:21:23 LOG7[3]: Remote descriptor (FD=23) initialized 3916.06.12 08:21:23 LOG6[3]: Read socket closed (readsocket) 3916.06.12 08:21:23 LOG7[3]: Sending close_notify alert 3916.06.12 08:21:23 LOG7[3]: SSL alert (write): warning: close notify 3916.06.12 08:21:23 LOG6[3]: SSL_shutdown successfully sent close_notify alert 3916.06.12 08:21:23 LOG3[3]: transfer() loop executes not transferring any data 3916.06.12 08:21:23 LOG3[3]: please report the problem to Michal.Trojnara(a)mirt.net

1 0

Multiple accept parameter, or Ipv4 and v6 in one statement.
by Brandon Jackson 12 May '16

12 May '16

Hi, I'm looking to expand my usage of stunnel. One thing i'm wondering, is there a way to use multiple accepts for the same service. Like: [httpsmain] accept = 443 accept = :::443 connect = 10.0.1.1:9443 or even something like. [httpsmain] accept = 443,:::443 connect = 10.0.1.1:8443 The reason is I'm about to setup some service with sni with a few domains and certs, but if I have to have them on v4 and v6 it looks like i'll have to double everything up. Is there a better way? ---------------------------------- Brandon Jackson bojack1437(a)gmail.com <https://mail.google.com/mail/?view=cm&fs=1&tf=1&[email protected]>

1 0

Timeout when connecting to
by Khan, Mohammed 10 May '16

10 May '16

Hi, I have installed v5.32 Stunnel on my Windows server which is hosted on AWS. I am trying to connect from here using a Emailer app which uses POP3 to try to connect to this server Outlook.Office365.com on port 995, but I keep on getting this error logged in Stunnel logs: [cid:[email protected]] Does anyone have any ideas as to why this connection is timing out please? Any help would be much appreciated thanks in advance! Rgds Mo Khan / Software Engineer / FootFall Tel: +44 121 712 1428 / Mobile: +44 776 692 7120 Yorke House, Arleston Way / Solihull, B90 4LH / United Kingdom mohammedkhan(a)tycoint.com<mailto:%[email protected]> / www.footfall.com<http://www.footfall.com/> [Description: Fieldworks Marketing]<https://urldefense.proofpoint.com/v2/url?u=http-3A__tycoretailsolutions.com…> [Description: Fieldworks Marketing]<http://www.footfall.com/> [Description: http://www.footfall.com/wp-content/uploads/2015/09/LinkedIn.png]<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.linkedin.com_compa…> [Description: http://www.footfall.com/wp-content/uploads/2015/09/Twitter.png] <https://urldefense.proofpoint.com/v2/url?u=https-3A__twitter.com_footfallin…> [Description: http://www.footfall.com/wp-content/uploads/2015/09/YouTube.png] <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.youtube.com_channe…> [Description: http://www.footfall.com/wp-content/uploads/2015/09/Facebook.png] <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.facebook.com_footf…> [Description: http://www.footfall.com/wp-content/uploads/2015/09/Google-.png] <https://urldefense.proofpoint.com/v2/url?u=https-3A__plus.google.com_-2BFoo…> ________________________________ This e-mail contains privileged and confidential information intended for the use of the addressees named above. If you are not the intended recipient of this e-mail, you are hereby notified that you must not disseminate, copy or take any action in respect of any information contained in it. If you have received this e-mail in error, please notify the sender immediately by e-mail and immediately destroy this e-mail and its attachments.

1 0

Temporary DH params in stunnel
by Guillermo Rodriguez Garcia 10 May '16

10 May '16

Hi all, The stunnel docs say that starting with stunnel 5.18, DH params are auto-generated every 24 hours and that this "may take several minutes". I see that for this purpose, stunnel uses OpenSSL's DH_generate_parameters[_ex] function. According to the OpenSSL API docs [1], these functions "may run for several hours before finding a suitable prime." [1]: https://www.openssl.org/docs/manmaster/crypto/DH_generate_parameters.html Wouldn't it make sense to use "DSA-like" DH params for this purpose? These are much faster to generate and apparently equally safe. DSA-like DH params are generated using DSA_generate_parameters[ex]. It is the equivalent of passing the -dsaparam option to the openssl dhparam command. Some useful info: - http://security.stackexchange.com/a/95184/109144 - http://dovecot.org/pipermail/dovecot/2015-November/102447.html Best regards, Guillermo Rodriguez Garcia guille.rodriguez(a)gmail.com

1 0

'Integer constant too large' warnings in str.c
by Guillermo Rodriguez Garcia 10 May '16

10 May '16

Hello, Current stunnel (5.32) gives a bunch of warnings in str.c when the CANARY_XXX and MAGIC_XXX constants are used, for example: str.c:101: warning: integer constant is too large for 'long' type Shouldn't these constants be declared with the 'LL' suffix instead of 'L' ? #define CANARY_INITIALIZED 0x0000c0ded0000000LL #define CANARY_UNINTIALIZED 0x0000abadbabe0000LL #define MAGIC_ALLOCATED 0x0000a110c8ed0000LL #define MAGIC_DEALLOCATED 0x0000defec8ed0000LL Best regards, Guillermo Rodriguez Garcia guille.rodriguez(a)gmail.com

2 1

SNI support in OpenSSL
by Guillermo Rodriguez Garcia 08 May '16

08 May '16

Hello all, The stunnel documentation says that SNI requires stunnel to be linked with OpenSSL >= 1.0.0. However, SNI is supported in OpenSSL since 0.9.8f (and actually enabled by default since 0.9.8k). For 0.9.8f and later, OPENSSL_NO_TLSEXT will be defined if TLS extension support (including SNI support) is not compiled into OpenSSL. Taking the above into account, the OpenSSL version check in stunnel (src/common.h) could be relaxed a bit. Instead of: #if OPENSSL_VERSION_NUMBER<0x10000000L #define OPENSSL_NO_TLSEXT #define OPENSSL_NO_PSK #endif /* OpenSSL older than 1.0.0 */ this could be: #if OPENSSL_VERSION_NUMBER<0x00908060L #define OPENSSL_NO_TLSEXT #endif /* OpenSSL older than 0.9.8f */ #if OPENSSL_VERSION_NUMBER<0x10000000L #define OPENSSL_NO_PSK #endif /* OpenSSL older than 1.0.0 */ This would enable SNI on systems using 0.9.8 (Mac OS X for example). Best regards, Guillermo Rodriguez Garcia guille.rodriguez(a)gmail.com

1 0

SSLv3 not working with version 5.06
by Francois Pires 06 May '16

06 May '16

Hi all, We need use of sslv3 but with debian Jessie package version 5.06 this is not working. I have add options -NO_SSLv3 still same. Can you check if my configuration is good and if you have any idea to have sslv3 working with this verison. # stunnel.conf syslog = no cert = /etc/ssl/certs/test.crt.pem key = /etc/ssl/private/test.key.pem CAfile = /etc/ssl/certs/test.ca-bundle # Protocol version (all, SSLv2, SSLv3, TLSv1) sslVersion = all options = -NO_SSLv3 ciphers = AES256-SHA #ciphers = ECDH@STRENGTH:DH@STRENGTH:HIGH:!RC4:!MD5:!DES:!aNULL:!eNULL # Some debugging stuff useful for troubleshooting debug = 7 output = /stunnel.log # Debian and Ubuntu chroot config chroot = /var/lib/stunnel4/ setuid = stunnel4 setgid = stunnel4 pid = /stunnel4.pid # Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 socket = l:SO_KEEPALIVE=1 socket = r:SO_KEEPALIVE=1 [test] accept = 11443 connect = 127.0.0.1:11444 # stunnel log with openssl test SSL_accept: 14076102: error:14076102:SSL routines:SSL23_GET_CLIENT_HELLO:unsupported protocol openssl s_client -connect 127.0.0.1:11443 -ssl3 CONNECTED(00000003) write:errno=104 --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 0 bytes and written 0 bytes --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE SSL-Session: Protocol : SSLv3 Cipher : 0000 Session-ID: Session-ID-ctx: Master-Key: Key-Arg : None PSK identity: None PSK identity hint: None SRP username: None Start Time: 1462525363 Timeout : 7200 (sec) Verify return code: 0 (ok) -- Cordialement, François PIRES SysAdmin

2 1

how to pass servername openssl parameter
by Dod 04 May '16

04 May '16

Hello, Little question I use openssl s_client mode to call an https with private PKI so private CAFile CERT and also Key, but I also need to use the parameter "servername" but stunnel seems not support it or may be it has an other syntax ? regards.

1 0

Connect to web app with weak crypto
by Pete McEvoy 29 Apr '16

29 Apr '16

Hi. I have a java web app that uses weak crypto. I would like to be able to access it with a modern browser. Currently the only method that seems to work is links on freebsd 9.3, all other browsers give errors such as: Error performing TLS handshake: The Diffie-Hellman prime sent by the server is not acceptable (not long enough). Obviously it would be better if this was fixed but it is not something I have control of. Would it be possible for me to use stunnel to encapsulate the weak connection within a stronger one so the browser does not complain? I have tried this: ; TLS front-end to a web server [https] client = yes accept = 443 connect = 192.168.1.5:443 cert = /usr/local/etc/stunnel/stunnel.pem Which asks me to make an exception for the self signed cert but then proceeds to fail in same way as before. Cheers -- Pete

1 0

Memory Leak in stunnel 5.31
by Fritz Gschwendner 20 Apr '16

20 Apr '16

Thank you. I tried the new version. Between 10:15 and 10:50 stunnel private bytes grew by ~ 85 MB. Log entries regarding "possible memory leak" look like this at the beginning: 2016.04.20 10:17:01 LOG4[937]: Possible memory leak at .\crypto\asn1\tasn_new.c:179: 71652 allocations 2016.04.20 10:17:01 LOG4[937]: Possible memory leak at .\crypto\asn1\asn1_lib.c:412: 70978 allocations 2016.04.20 10:17:01 LOG4[937]: Possible memory leak at .\crypto\asn1\a_object.c:346: 55283 allocations 2016.04.20 10:17:01 LOG4[937]: Possible memory leak at .\crypto\asn1\a_object.c:315: 55283 allocations 2016.04.20 10:17:01 LOG4[937]: Possible memory leak at .\crypto\asn1\asn1_lib.c:376: 56826 allocations 2016.04.20 10:17:01 LOG4[937]: Possible memory leak at .\crypto\stack\stack.c:162: 13761 allocations 2016.04.20 10:17:01 LOG4[937]: Possible memory leak at .\crypto\stack\stack.c:187: 11448 allocations 2016.04.20 10:17:01 LOG4[937]: Possible memory leak at .\crypto\buffer\buffer.c:118: 11172 allocations 2016.04.20 10:17:01 LOG4[937]: Possible memory leak at .\crypto\asn1\tasn_new.c:342: 10501 allocations ..and later like this: 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\tasn_new.c:179: 182132 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\asn1_lib.c:412: 181243 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\a_object.c:346: 138968 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\a_object.c:315: 138968 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\asn1_lib.c:376: 144407 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\stack\stack.c:162: 35294 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\stack\stack.c:187: 29760 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\buffer\buffer.c:118: 28186 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\tasn_new.c:342: 27649 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\bn\bn_lib.c:303: 27405 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\buffer\buffer.c:74: 18971 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\x_name.c:136: 18967 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\x_name.c:383: 18967 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\a_int.c:208: 18406 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\asn1\a_bitstr.c:158: 18433 allocations 2016.04.20 10:51:04 LOG4[2658]: Possible memory leak at .\crypto\bn\bn_lib.c:272: 13616 allocations If there is anything else I can do, please let me know. -----Ursprüngliche Nachricht----- Von: stunnel-users [mailto:[email protected]] Im Auftrag von Michal Trojnara Gesendet: Dienstag, 19. April 2016 23:31 An: stunnel-users(a)stunnel.org Betreff: Re: [stunnel-users] Memory Leak in stunnel 5.31 On 31.03.2016 22:28, Fritz Gschwendner wrote: > we have a memory leak with stunnel 5.31 in server mode on Windows > Server 2012. Page File Bytes of the stunnel process keep growing. [cut] > I suspect it has something to do with clients not closing the > connection correctly. We have a lot of connections ending like > this: [cut] > Is my suspicion plausible? Can you recommend a change in the > configuration to avoid this issue? Anything else I can do to debug? Your suspicion looks plausible. I have added a heuristic algorithm that identifies excessive memory allocations. Please try stunnel-5.32b2: https://www.stunnel.org/downloads.html The logged warnings should allow identification of the leak source. Best regards, Mike _______________________________________________ stunnel-users mailing list stunnel-users(a)stunnel.org https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users

1 0

Stunnel and Eudora error
by EPPack 14 Apr '16

14 Apr '16

I installed stunnel on one of my laptops a few days ago, and it installed uneventfully. I set up one of my gmail accounts in Eudora per directions I got from another Eudora user, and the account works perfectly in Eudora. However, on this machine, I got an unexpected prompt that showed up in a cmd window during the install, which did NOT show up on the other machine: WARNING: can't open config file: /devel/win32/openssl/openssl.cnf Generating a 2048 bit RSA private key ...+++ ..................+++ Writing new private key to 'C:\Program Files (x86)\stunnel\config\stunnel.pem' ---- You are about to be asked to enter information that will be incorporated into your certificate request. What you are about to enter is what is called a Distinguished Name or a DN. There are quite a few fields but you can leave some blank for some fields there will be a default value, If you enter '.', the field will be left blank. ---- Country Name (2 letter code) [PL]: When I try for an inbound in Eudora, I get the "Error reading from network. Cause: connection aborted due to timeout or other failure (10053). Problem of course is that I'm also unsure if it installed fully/correctly. On the other machine, it installed itself uneventfully as a service, and after I started it (it came in as manual, unstarted), it was fine. This time, tho, it didn't show up in the list of services at all, even tho there was a prompt to start it, which I allowed it to do. That said, I did see it in the start menu, and was able to start it. I also rebooted, and it started up OK. However, after configuring one of my accounts the same way as on the other machine, it's not working, getting the timeout error above. Changed it back to the normal settings for GMail in Eudora, it worked fine, so it wasn't any other cause. I tried adding options = DONT_INSERT_EMPTY_FRAGMENTS to the conf, hopefully in the right place :) and also bumped the Eudora Advanced Network params as also suggested.Nada. The only difference between the two machines, both Windows 7 Pro, is that this one is a 64bit, the other not, which may well be the difference. As I'm new to stunnel, I looked for the manual, but got a 403 on the page. Thoughts? elaine ----- Elaine Pack, Web Analyst, Ivy, VA 99 programming bugs in the code 99 programming bugs Fix one bug, compile it again Now there's 100 bugs in the code! (Repeat until bugs=0)

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