stunnel-users

3306 discussions

stunnel 5.57 crashed while trying to write logs
by phananh.nguyen＠dxc.com 06 Jul '23

06 Jul '23

it crashed at the function log_raw. here is the backtrace == Backtrace #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:49 #1 0x0000007f82ed54b4 in __GI_abort () at abort.c:79 #2 0x0000007f82f1f984 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f82fdc660 "%s\n") at ../sysdeps/posix/libc_fatal.c:155 #3 0x0000007f82f273dc in malloc_printerr (str=str@entry=0x7f82fd7bc8 "corrupted double-linked list") at malloc.c:5389 #4 0x0000007f82f27cc8 in unlink_chunk (p=p@entry=0x7f64012260, av=0x7f64000020) at malloc.c:1472 #5 0x0000007f82f27e48 in malloc_consolidate (av=av@entry=0x7f64000020) at malloc.c:4539 #6 0x0000007f82f29df0 in _int_malloc (av=av@entry=0x7f64000020, bytes=bytes@entry=8192) at malloc.c:3727 #7 0x0000007f82f2c5b0 in __libc_calloc (n=<optimized out>, elem_size=<optimized out>) at malloc.c:3448 #8 0x0000007f82f1e41c in __GI___open_memstream (bufloc=bufloc@entry=0x7f72ffc3f8, sizeloc=sizeloc@entry=0x7f72ffc400) at memstream.c:83 #9 0x0000007f82f7d274 in __vsyslog_internal (pri=31, pri@entry=7, fmt=fmt@entry=0x5584b5f930 "%s: %s", ap=..., mode_flags=mode_flags@entry=2) at ../misc/syslog.c:181 #10 0x0000007f82f7d810 in __syslog_chk (pri=pri@entry=7, flag=flag@entry=1, fmt=fmt@entry=0x5584b5f930 "%s: %s") at ../misc/syslog.c:136 #11 0x0000005584b45884 in syslog (__fmt=0x5584b5f930 "%s: %s", __pri=7) at /usr/include/bits/syslog.h:31 #12 log_raw (level=level@entry=7, stamp=stamp@entry=0x7f64003420 "2023.06.16 01:36:58", id=id@entry=0x7f64001120 "LOG7[19]", text=text@entry=0x7f6401b060 "Service [proxy-r] started", opt=<optimized out>, opt=<optimized out>) at ../../stunnel-5.57/src/log.c:263 #13 0x0000005584b45b88 in s_log (level=level@entry=7, format=format@entry=0x5584b5a780 "Service [%s] started") at ../../stunnel-5.57/src/log.c:192 #14 0x0000005584b454e8 in client_main (c=c@entry=0x7f82e30060) at ../../stunnel-5.57/src/client.c:178 #15 0x0000005584b45658 in client_thread (arg=0x7f82e30060) at ../../stunnel-5.57/src/client.c:130 #16 0x0000007f83026e64 in start_thread (arg=0x7fc21e457f) at pthread_create.c:463 #17 0x0000007f82f815dc in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:78 == Thread apply all backtrace full

2 4

Using URL Subfolders to redirect traffic to a different service?
by hellmanandrew＠comcast.net 02 Jul '23

02 Jul '23

I want to be able to actually use stunnel as a reverse proxy by running everything through one port. How I want to do that is by using subfolders in a URL like: webpage.net/service1 webpage.net/service2 Basically, every subfolder will redirect to a different IP address or port offered by a server. Just not sure how I should configure this.

1 0

help
by Seray Tokadli 26 Jun '23

26 Jun '23

Hello, I am trying to configure stunnel on windows (version 5.69) I am using the capi engine with below conf. I am sending the logs to logstash and not sure if it is working or not. My questions are: 1) I dont see anything in the log after initializing the service. When it sends the logs through stunnel, should i see an entry in the logs? 2) When using capi engine, should i limit the ssl version still ? in your website i see that the tls version supposed to be limited but is it an old info? 3) in your website again it mentions that i should specify the security level to zero for capi engine, is it also a valid info? if yes, do i need to set it in global section or service level? https://www.stunnel.org/config_windows.html fips = yes taskbar = yes engine = capi output = C:\Logs\stunnel\stunnel.log debug = debug [logging_service_for_filebeat] engineId = capi client = yes accept = {{ stunnel_logging_port_filebeat }} delay = yes connect = {{ logstash_vip }}:{{ stunnel_logging_port_filebeat }} ciphers = ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256 sessionCacheSize = 5000 sessionCacheTimeout = 300 socket = l:TCP_NODELAY=1 # the only FIPS 140-2 compliant protocol sslVersion = TLSv1.2 CApath = <ca path> verifyChain = yes checkHost = <ca host> verify = 2 Log: 023.06.26 14:37:39 LOG6[service]: Initializing inetd mode configuration 2023.06.26 14:37:39 LOG7[service]: Running on Windows 6.2 2023.06.26 14:37:39 LOG7[service]: No limit detected for the number of clients 2023.06.26 14:37:39 LOG5[service]: stunnel 5.69 on x64-pc-mingw32-gnu platform 2023.06.26 14:37:39 LOG5[service]: Compiled/running with OpenSSL 3.0.8 7 Feb 2023 2023.06.26 14:37:39 LOG5[service]: Threading:WIN32 Sockets:SELECT,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI 2023.06.26 14:37:39 LOG7[service]: errno: (*_errno()) 2023.06.26 14:37:39 LOG6[service]: Initializing inetd mode configuration 2023.06.26 14:37:39 LOG7[service]: Running on Windows 6.2 2023.06.26 14:37:39 LOG5[service]: Reading configuration from file C:\Program Files (x86)\stunnel\config\stunnel.conf 2023.06.26 14:37:39 LOG5[service]: UTF-8 byte order mark not detected 2023.06.26 14:37:39 LOG7[service]: Enabling support for engine "capi" 2023.06.26 14:37:39 LOG6[service]: Logging not supported by engine #1 (capi) 2023.06.26 14:37:39 LOG6[service]: UI not supported by engine #1 (capi) 2023.06.26 14:37:39 LOG7[service]: Initializing engine #1 (capi) 2023.06.26 14:37:39 LOG6[service]: Engine #1 (capi) initialized 2023.06.26 14:37:39 LOG5[service]: FIPS provider enabled 2023.06.26 14:37:39 LOG5[service]: FIPS mode enabled 2023.06.26 14:37:39 LOG6[service]: Compression disabled 2023.06.26 14:37:39 LOG7[service]: No PRNG seeding was required 2023.06.26 14:37:39 LOG6[service]: Initializing service [logging_service_for_filebeat] 2023.06.26 14:37:39 LOG6[service]: stunnel default security level set: 2 2023.06.26 14:37:39 LOG7[service]: Ciphers: ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256 2023.06.26 14:37:39 LOG7[service]: TLSv1.3 ciphersuites: TLS_AES_256_GCM_SHA384:TLS_AES_128_GCM_SHA256:TLS_CHACHA20_POLY1305_SHA256 2023.06.26 14:37:39 LOG7[service]: TLS options: 0x2100000 (+0x0, -0x0) 2023.06.26 14:37:39 LOG6[service]: Session resumption enabled 2023.06.26 14:37:39 LOG6[service]: Client certificate engine (capi) enabled 2023.06.26 14:37:39 LOG7[service]: No certificate or private key specified 2023.06.26 14:37:39 LOG6[service]: Configured trusted server CA:xxx 2023.06.26 14:37:39 LOG6[service]: Configured trusted server CA:xxx 2023.06.26 14:37:39 LOG6[service]: Configured trusted server CA: xxx 2023.06.26 14:37:39 LOG6[service]: DH initialization skipped: client section 2023.06.26 14:37:39 LOG7[service]: ECDH initialization 2023.06.26 14:37:39 LOG7[service]: ECDH initialized with curves X25519:P-256:X448:P-521:P-384 2023.06.26 14:37:39 LOG6[service]: Initializing service [logging_service_for_winlogbeat] 2023.06.26 14:37:39 LOG6[service]: stunnel default security level set: 2 2023.06.26 14:37:39 LOG7[service]: Ciphers: ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256 2023.06.26 14:37:39 LOG7[service]: TLSv1.3 ciphersuites: TLS_AES_256_GCM_SHA384:TLS_AES_128_GCM_SHA256:TLS_CHACHA20_POLY1305_SHA256 2023.06.26 14:37:39 LOG7[service]: TLS options: 0x2100000 (+0x0, -0x0) 2023.06.26 14:37:39 LOG6[service]: Session resumption enabled 2023.06.26 14:37:39 LOG6[service]: Client certificate engine (capi) enabled 2023.06.26 14:37:39 LOG7[service]: No certificate or private key specified 2023.06.26 14:37:39 LOG6[service]: Configured trusted server CA: xxx 2023.06.26 14:37:39 LOG6[service]: Configured trusted server CA: xxx 2023.06.26 14:37:39 LOG6[service]: Configured trusted server CA: xxx 2023.06.26 14:37:39 LOG6[service]: DH initialization skipped: client section 2023.06.26 14:37:39 LOG7[service]: ECDH initialization 2023.06.26 14:37:39 LOG7[service]: ECDH initialized with curves X25519:P-256:X448:P-521:P-384 2023.06.26 14:37:39 LOG5[service]: Configuration successful 2023.06.26 14:37:39 LOG7[service]: Deallocating deployed section defaults 2023.06.26 14:37:39 LOG7[service]: Binding service [logging_service_for_filebeat] 2023.06.26 14:37:39 LOG7[service]: Listening file descriptor created (FD=632) 2023.06.26 14:37:39 LOG7[service]: Setting accept socket options (FD=632) 2023.06.26 14:37:39 LOG7[service]: Option SO_EXCLUSIVEADDRUSE set on accept socket 2023.06.26 14:37:39 LOG6[service]: Service [logging_service_for_filebeat] (FD=632) bound to 0.0.0.0:10300 2023.06.26 14:37:39 LOG7[service]: Binding service [logging_service_for_winlogbeat] 2023.06.26 14:37:39 LOG7[service]: Listening file descriptor created (FD=648) 2023.06.26 14:37:39 LOG7[service]: Setting accept socket options (FD=648) 2023.06.26 14:37:39 LOG7[service]: Option SO_EXCLUSIVEADDRUSE set on accept socket 2023.06.26 14:37:39 LOG6[service]: Service [logging_service_for_winlogbeat] (FD=648) bound to 0.0.0.0:10301 2023.06.26 14:37:39 LOG6[service]: Accepting new connections 2023.06.26 14:37:39 LOG7[per-second]: Per-second thread initialized 2023.06.26 14:37:39 LOG7[per-day]: Per-day thread initialized 2023.06.26 14:37:39 LOG6[per-day]: Executing per-day jobs 2023.06.26 14:37:39 LOG6[per-day]: Per-day jobs completed in 0 seconds 2023.06.26 14:37:39 LOG7[per-day]: Waiting 86400 seconds -- Seray TOKADLI KILIÇ +420778116052

1 0

stunnel application in windows 2016 server
by noel.melvin＠tcs.com 21 Jun '23

21 Jun '23

Hi All, Please anyone know the answer, its very urgent. 1. stunnel log file are not capturing any events. (It was working before the server reboot 2 days earlier). 2. When we open stunnel.exe getting message as "server is down". Anything else apart from stunnel.conf file is located in the config folder and it was working prior to the server reboot. the only change we did was replaced a pem & .key files in c:\programfilesx86\stunnel\config and then server was rebooted. since then the events are not getting captured in d:\stunnellogs\stunnel.log file. Also how to verify the stunnel functionality till then

2 7

help configuring stunnel with ssl ceritificate
by Andrei 20 Jun '23

20 Jun '23

Hello! I'm trying to configure stunnel with an ssl certificate. I have the certificate (.p12 format) from the site owners, installed it in the Personal folder of the current user and local machine. Before installing stunnel I had to select the certificate in the browser when accessing the site. With this configuration [sts] client = yes accept = 127.0.0.1:42354 connect = y7m2zq.its:443 key = E:\!Work\ cert_.pem CAfile = E:\!Work\ cert_.pem verify=0 the stunnel starts but I get a `No required SSL certificate was sent`when accessing from the browser. If I use this config [sts] client = yes accept = 127.0.0.1:42354 connect = y7m2zq.its:443 cert = E:\!Work\cert_.p12 key = E:\!Work\cert_.pem CAfile = E:\!Work\cert_.pem verify=0 the stunnel will not start PKCS12_parse: crypto/evp/evp_fetch.c:373: error:0308010C:digital envelope routines::unsupported LOG3[main]: Service [sts]: Failed to initialize TLS context Please help. I would like to be able to open the site without choosing the certificate. Thank you!

2 1

stunnel application in windows 2016 server
by noel.melvin＠tcs.com 20 Jun '23

20 Jun '23

1 0

stunnel application in windows 2016 server
by noel.melvin＠tcs.com 20 Jun '23

20 Jun '23

1 0

stunnel application in windows 2016 server
by noel.melvin＠tcs.com 20 Jun '23

20 Jun '23

1 0

Inbound and outbound connection on same PC?
by trashrap22＠gmail.com 15 Jun '23

15 Jun '23

Hi, I have a linux PC that now successfully runs a stunnel client connection with a remote server. I now want to be able to access sql server on that linux PC from a remote Windows PC. What I would like to gather information on: 1. Can the client configuration of stunnel on the linux PC be used for a second connection from the remote windows PC to access data (sql server)? 2. Thus, what differentiates a client from a server - a server can have multiple connections and provides data? A client can't? 3. What is the correct route I should take? Regards,

3 3

Reading HSM Pincode from file and passing it to Stunnel/OpenSSL
by Andreas Heijdendael 30 May '23

30 May '23

Hi there, I'm running into an issue. I'm trying to run stunnel on my new Ubuntu 22.04 system whereas before I was running it on Windows. Thing is, on the Windows system I had to compile stunnel manually as I need to read an encrypted file on the filesystem that contains the user-pin for my HSM. On Windows, that worked. On Ubuntu I'm having issues with the C11 _s functions (like sscanf_s and the likes). ChatGTP suggested using clang compiler, but I have not clue on how to do that. Of enabling C11 Annex K support in Ubuntu (no such thing, apparently).... Is there anybody here that makes use of these _s functions in their code on Ubuntu 22.04? Or explain how to use these functions in gcc? Or compile stunnel (+ additional code) using Clang. Thanks!! Andreas

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