stunnel-users

2 participants
3307 discussions

Newbie trying to connect over a Microsoft Proxy
by Michael Blake 05 Jan '05

05 Jan '05

Hi All I'm a relative newbie to Stunnel, and am trying to set up a tunnel so I can Remote Desktop from work to my PC/server at home. I'm using versions 4.05 & 4.06 of the Windows binaries. A Microsoft Proxy Server v2.0 is used at work, and it proxies HTTP, Secure (is that SSL/port 443??), FTP and Gopher over port 800. I'm not sure if it proxies Socks, as there's no entry for it in Internet Explorer. I've tested the configuration and it works on my LAN, and it works from home when I enter my domain home (so my firewall is set up correctly). My config is as follows: #Client CAfile = stunnel.pem cert = stunnel.pem client = yes verify = 3 [rdp-80] accept = localhost:3390 connect = xxx.xxx.xxx.xxx:80 #Server CAfile = stunnel.pem cert = stunnel.pem client = yes verify = 3 [rdp-80] accept = 192.168.10.221:80 connect = 127.0.0.1:3389 Is there something I need to do to traverse this proxy? Any help would be greatly appreciated! Tks, Michael Blake IT Consultant | Headbyte Limited Tel: + 44 7909 844273 http://www.headbyte.co.uk

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stunnel-4.07 on non-IPv6 systems
by Hans Werner Strube 04 Jan '05

04 Jan '05

On systems which do not yet support IPv6 and do not have getnameinfo (for instance, Solaris 7), also NI_NUMERICHOST and NI_NUMERICSERV are usually undefined. In stunnel-4.07, this causes compilation of src/network.c to fail. Patch: *** src/network.c.ORI Mon Jan 3 00:20:27 2005 --- src/network.c Tue Jan 4 14:46:10 2005 *************** *** 73,78 **** --- 73,84 ---- static const char *s_gai_strerror(int); #ifndef HAVE_GETNAMEINFO + #ifndef NI_NUMERICHOST + #define NI_NUMERICHOST 2 + #endif + #ifndef NI_NUMERICSERV + #define NI_NUMERICSERV 8 + #endif static int getnameinfo(const struct sockaddr *, socklen_t, char *, int , char *, int , int ); #endif

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bugfix for the makefile of stunnel 4.07
by deepstar＠ulyssis.org 04 Jan '05

04 Jan '05

Hi, there appears to be a bug in the makefile (tools/Makefile) that installed files/directories in the wrong place when installing to another root directory (DESTDIR env var) The attached patch should fix it. greets, -- Steven Van Acker

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Port forwarding based on application type
by Konda Ankireddyapalli 03 Jan '05

03 Jan '05

Hello all, Can stunnel forward the traffic to different ports based on an application type as opposed to by port? If yes, how can it be configured? My need is that on the client side we have many applications that share a single outgoing port. On the server side I want to demultiplex the stunnel traffic coming in on a single port to multiple applications after decryption. Thanks in advance, Konda

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Stunnel 4.07 released
by Michal Trojnara 02 Jan '05

02 Jan '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 New release fixes several bugs introduced in version 4.06. ChangeLog entry: Version 4.07, 2005.01.03, urgency: MEDIUM: * Bugfixes - Problem with infinite poll() timeout negative, but not equal to -1 fixed. - Problem with a file descriptor ready to be read just after a non-blocking connect call fixed. - Compile error with EAI_NODATA not defined or equal to EAI_NONAME fixed. - IP address and TCP port textual representation length (IPLEN) increased to 128 bytes. - OpenSSL engine support is only used if engine.h header file exists. - Broken NT Service mode on WIN32 platform fixed. - Support for IPv4-only WIN32 machines restored. Homepage: http://stunnel.mirt.net/ Best regards, Mike -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFB2IcR/NU+nXTHMtERAn/hAJ42XjEtUrkyixamOeMV0rRGCvqwDACg21LB sYFF8L4teETWdrkLjfkdX2E= =qOfD -----END PGP SIGNATURE-----

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A couple of patches against 4.06
by Peter Pentchev 31 Dec '04

31 Dec '04

Hi, First of all, thanks for writing and maintaining this great piece of software :) When I ported 4.06 to FreeBSD on Monday, there were three changes that needed to be made. One is the passing of -1, not -1000, to poll(2), which has already been discussed on this list (and which, by the way, is mandated by POSIX and the Single Unix Specification, as you can see at http://www.opengroup.org/onlinepubs/007908799/xsh/poll.html ) The other two can be seen in the patch below. The first one is related to the fact that EAI_NODATA is not present on all systems - it was actually obsoleted by the KAME implementation of IPv6 about an year ago. On some systems it is defined and has its own value - then stunnel builds just fine. On other systems it is not defined at all, while on yet other systems it is aliased to EAI_NONAME, so 'case EAI_NONAME' and 'case EAI_NODATA' would produce an error message from the compiler. Thus, the #ifdef and #if in the first chunk of the patch. This could not be done portably with a single statement, something like '#if defined(EAI_NODATA) && EAI_NODATA != EAI_NONAME', since there are some compilers that would barf on the second part if EAI_NODATA was not actually defined. The second chunk of the patch fixes getnameinfo() error reporting - just like with getaddrinfo(), getnameinfo() errors should be displayed using s_gai_strerror() instead of sockerror(). Keep up the good work! G'luck, Peter --- src/network.c.orig Thu Oct 14 18:03:49 2004 +++ src/network.c Wed Dec 29 14:16:06 2004 @@ -416,8 +416,12 @@ return "Temporary failure in name resolution (EAI_AGAIN)"; case EAI_FAIL: return "Non-recoverable failure in name resolution (EAI_FAIL)"; +#ifdef EAI_NODATA +#if EAI_NODATA != EAI_NONAME case EAI_NODATA: return "No address associated with nodename (EAI_NODATA)"; +#endif +#endif case EAI_FAMILY: return "ai_family not supported (EAI_FAMILY)"; case EAI_SOCKTYPE: @@ -562,10 +566,13 @@ /* getnameinfo() version */ char *s_ntop(char *text, SOCKADDR_UNION *addr) { char host[20], port[6]; + int err; - if(getnameinfo(&addr->sa, addr_len(*addr), - host, 20, port, 6, NI_NUMERICHOST|NI_NUMERICSERV)) { - sockerror("getnameinfo"); + err = getnameinfo(&addr->sa, addr_len(*addr), + host, 20, port, 6, NI_NUMERICHOST|NI_NUMERICSERV); + if (err) { + s_log(LOG_ERR, "Error resolving the specified address: %s", + s_gai_strerror(err)); strcpy(text, "unresolvable IP"); return text; } -- Peter Pentchev roam(a)ringlet.net roam(a)cnsys.bg roam(a)FreeBSD.org PGP key: http://people.FreeBSD.org/~roam/roam.key.asc Key fingerprint FDBA FD79 C26F 3C51 C95E DF9E ED18 B68D 1619 4553 .siht ekil ti gnidaer eb d'uoy ,werbeH ni erew ecnetnes siht fI

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xforwardfor-patch
by Alexander Lazic 30 Dec '04

30 Dec '04

Hi, i have attached my xforwardfor-patch for stunnel-4.06 ;-) al ;-)

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stunnel 4.0.6 stunnel uid/gid removal
by Noah 30 Dec '04

30 Dec '04

stunnel-4.0.6 FreeBSD-4.9 I just installed stunnel 4.0.6 and noticed during the portinstall that the defualt behavior was to remove the stunnel uid and gid. can somebody clue me in as to why this was the Process? I cant find any relevant information on the web. cheers, Noah

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engine-patch
by Alexander Lazic 29 Dec '04

29 Dec '04

Hi, we have a the following openssl: --- OpenSSL 0.9.7d 17 Mar 2004 built on: Wed Nov 3 13:28:35 CET 2004 platform: solaris-sparcv9-gcc options: bn(64,32) md2(int) rc4(ptr,char) des(idx,cisc,16,long) idea(int) blowfish(ptr) compiler: gcc -DOPENSSL_SYSNAME_ULTRASPARC -DOPENSSL_THREADS -D_REENTRANT -DDSO_DLFCN -DHAVE_DLFCN_H -DOPENSSL_NO_KRB5 -DOPENSSL_NO_ENGINE -m32 -mcpu=ultrasparc -O3 -fomit-frame-pointer -Wall -DB_ENDIAN -DBN_DIV2W -DMD5_ASM --- We don't have the engine enabled therefore the current stunnel don't compile :-( I have attached the patch for the current (4.06) stunnel version. BTW: I need the 'X-Forwarded-For' header, in where is the right position to add it in the 4.06 version. I think in 'src/client.c => transfer()' but i'am not sure, where there ;-) Thanx for help ;-) al ;-)

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enforcing minimum cipher set available
by auto403973＠hushmail.com 29 Dec '04

29 Dec '04

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 is there a way (perhaps using extended 'options' section?), to enforce a minimum cipher strength / type for the connecting client? a solution would be to use apache 2's sslproxy to stunnel (yikes), but stunnel rocks :) apache / mod_ssl - from httpd.conf # SSL Cipher Suite: # List the ciphers that the client is permitted to negotiate. # See the mod_ssl documentation for a complete list. SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:- SSLv2:+EXP:+eNULL -----BEGIN PGP SIGNATURE----- Note: This signature can be verified at https://www.hushtools.com/verify Version: Hush 2.4 wkYEARECAAYFAkHSUs4ACgkQdgNHoxEs/oi+2ACfYPDjijulcO0luIPfV2oYZ4aLWdAA niumLVXQRaEEK12TO5EF12e9ay/b =aNe8 -----END PGP SIGNATURE----- Concerned about your privacy? Follow this link to get secure FREE email: http://www.hushmail.com/?l=2 Free, ultra-private instant messaging with Hush Messenger http://www.hushmail.com/services-messenger?l=434 Promote security and make money with the Hushmail Affiliate Program: http://www.hushmail.com/about-affiliate?l=427

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