stunnel-users

stunnel-users@stunnel.org

6 participants
3294 discussions

Stunnel 4.26 compile issue against openssl 0.9.8j + openssl-fips-1.2
by David W Blaine 10 Mar '09

10 Mar '09

Hi all, When I compile against OpenSSL 0.9.8j + OpenSSL-FIPS-1.2 module on Centos 4.7, I get an error in client.c: client.o(.text+0x1dd): In function `init_ssl': /tmp/stunnel-4.27/src/client.c:333: undefined reference to `FIPS_set_prng_key' collect2: ld returned 1 exit status make[1]: *** [stunnel] Error 1 make[1]: Leaving directory `/tmp/stunnel-4.27/src' make: *** [all-recursive] Error 1 It seems this call is related to a bug in OpenSSL-FIPS-1.1.1 module according to the comments. Checking the references in the includes for both OpenSSL 0.9.8j and OpenSSL-FIPS-1.2, I found that the call should be "fips_set_prng_key" with 3 arguments (the above requires only 2). So based on the comments, I removed it and I was able to successfully compile and install. Not sure if that is the right thing to do??? Dave

2 3

email through clients where no port number defined - like Outlook Express
by Richard Brust 06 Mar '09

06 Mar '09

A few days ago, sent an email in regards to a CRM program attempting to access GMail where no port number definitions are possible. That email (or part of it) is below, but after a bit more diag, I found that the email client was communicating with stunnel, but was not getting past that to GMail (or stunnel was not getting to GMail, not sure how to tell). I also realized that the settings of this application are similar to Outlook Express - email server defined, but no ability to specify port number. Does anyone have stunnel working with Outlook Express? I have a feeling the stunnel settings for that would be similar to what I need. Thanks, and the original email is below I am attempting to send/receive to GMail through a CRM program (contains email client) called ACT! (http://www.act.com) ACT! only allows server addresses in the program configuration, NOT port numbers. (e.g. smtp.gmail.com or 127.0.0.1 - nothing else) I have configured stunnel 4.26 as such: ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Some debugging stuff useful for troubleshooting debug = 7 output = stunnel.log ; Use it for client mode client = yes ; Service-level configuration [pop] accept = localhost:110 connect = pop.gmail.com:995 [smtp] accept = localhost:25 connect = smtp.gmail.com:465 and in ACT as such: SMTP as localhost POP as localhost (also have tried 127.0.0.1, but with no difference). Richard Brust richard_brust(a)yahoo.com

1 0

Stunnel for tunneling all traffic (vpn)
by BS TLC 06 Mar '09

06 Mar '09

Is it possible to create 2 virtual interfaces, for tunnelling all traffic (vpn)? With ssh program it's quite simple: with the -w option 2 new (tunnel) interfaces are created (for example tun0 and tun1), and it's possible to create a vpn for all type of traffic. Best regards __________________________________________________ Do You Yahoo!? Poco spazio e tanto spam? Yahoo! Mail ti protegge dallo spam e ti da tanto spazio gratuito per i tuoi file e i messaggi http://mail.yahoo.it

2 1

stunnel with libwrap does not disconnect from terminal
by Lars Kruse 02 Mar '09

02 Mar '09

Hi, starting with v4.21, stunnel does not disconnect from the terminal anymore. This can cause problems, if the caller does not redirect stdout/stderr to /dev/null. This did not happen with v4.20. The problem disappears, when I use he "--disable-libwrap" configure switch when compiling stunnel. I am running debian testing on i386 with the stunnel4 package 4.22-2. How to reproduce: 1) stunnel config file: setuid = lars pid = /tmp/stunnel.pid [server] connect = 8080 accept = 443 cert = /some/file 2) command line: cat stunnel.conf | stunnel4 -fd 0 3) process list: erker:~/ttt/stunnel/testing/stunnel-4.26# ps -ef| grep stun lars 29599 1 0 13:47 pts/1 00:00:00 src/stunnel -fd 0 lars 29600 1 0 13:47 pts/1 00:00:00 src/stunnel -fd 0 lars 29601 1 0 13:47 pts/1 00:00:00 src/stunnel -fd 0 lars 29602 1 0 13:47 pts/1 00:00:00 src/stunnel -fd 0 lars 29603 1 0 13:47 pts/1 00:00:00 src/stunnel -fd 0 lars 29604 1 0 13:47 ? 00:00:00 src/stunnel -fd 0 4) FDs of spawned processes: erker:~/ttt/stunnel/testing/stunnel-4.26# ls -l /proc/29599/fd lrwx------ 1 root root 64 Jan 10 13:50 1 -> /dev/pts/1 lrwx------ 1 root root 64 Jan 10 13:47 2 -> /dev/pts/1 lrwx------ 1 root root 64 Jan 10 13:50 3 -> socket:[903037] Is this the expected behaviour? I use stunnel in one of my projects (http://cryptonas.org) and it started to hang with v4.22. After redirecting stdout/stderr to /dev/null, the program works again. I assume, that stunnel should take care for stdout/stderr on its own, when started in daemon mode, right? thanks for your great work! Lars

4 6

No Tray Icon in XP SP3
by Zepp 02 Mar '09

02 Mar '09

Hi all: I am running Stunnel 4.26 in Windows XP SP3. The issue I'm having is that the tray icon is missing when I install and run Stunnel as a service. the program works fine, and it shows up on the process list okay, but no tray icon appears at all. I scanned the help file and saw an option called taskbar which is supposed to be toggled on by default. I added it to the conf file anyway, and it didn't make any difference. The only way I've been able to get the icon to show is to start Stunnel by adding a shortcut to the Startup folder. Is there an option I'm missing? Thanks much! Zepp

1 0

Simple audit of configuration?
by conover＠rahul.net 01 Mar '09

01 Mar '09

Is there a simple way to verify that an stunnel configuration is secure as expected, with no configuration errors? Thanks, John -- John Conover, conover(a)rahul.net, http://www.johncon.com/

1 0

GMail on Windows using ACT
by Richard Brust 24 Feb '09

24 Feb '09

I am attempting to send/receive to GMail through a CRM program (contains email client) called ACT! (http://www.act.com) ACT! only allows server addresses in the program configuration, NOT port numbers. (e.g. smtp.gmail.com or 127.0.0.1 - nothing else) I have configured *stunnel 4.26* as such: ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Some debugging stuff useful for troubleshooting debug = 7 output = stunnel.log ; Use it for client mode client = yes ; Service-level configuration [pop] accept = localhost:110 connect = pop.gmail.com:995 [smtp] accept = localhost:25 connect = smtp.gmail.com:465 and in ACT as such: SMTP as localhost POP as localhost (also have tried 127.0.0.1, but with no difference). The log is below, but the short of it is that I still cannot get through to the GMail servers. I do not see any glaring errors below, but I'm sure there is something useful. Thank you for any help... 2009.02.24 13:34:35 LOG7[3752:2216]: RAND_status claims sufficient entropy for the PRNG 2009.02.24 13:34:35 LOG7[3752:2216]: PRNG seeded successfully 2009.02.24 13:34:35 LOG7[3752:2216]: SSL context initialized for service pop 2009.02.24 13:34:35 LOG7[3752:2216]: SSL context initialized for service smtp 2009.02.24 13:34:35 LOG5[3752:2216]: stunnel 4.26 on x86-pc-mingw32-gnu with OpenSSL 0.9.8i 15 Sep 2008 2009.02.24 13:34:35 LOG5[3752:2216]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2009.02.24 13:34:35 LOG5[3752:1576]: No limit detected for the number of clients 2009.02.24 13:34:35 LOG7[3752:1576]: FD 200 in non-blocking mode 2009.02.24 13:34:35 LOG7[3752:1576]: SO_REUSEADDR option set on accept socket 2009.02.24 13:34:35 LOG7[3752:1576]: pop bound to 127.0.0.1:110 2009.02.24 13:34:35 LOG7[3752:1576]: FD 208 in non-blocking mode 2009.02.24 13:34:35 LOG7[3752:1576]: SO_REUSEADDR option set on accept socket 2009.02.24 13:34:35 LOG7[3752:1576]: smtp bound to 127.0.0.1:25 2009.02.24 13:34:39 LOG7[3752:1576]: smtp accepted FD=216 from 127.0.0.1:3063 2009.02.24 13:34:39 LOG7[3752:1576]: Creating a new thread 2009.02.24 13:34:39 LOG7[3752:1576]: New thread created 2009.02.24 13:34:39 LOG7[3752:760]: smtp started 2009.02.24 13:34:39 LOG7[3752:760]: FD 216 in non-blocking mode 2009.02.24 13:34:39 LOG7[3752:760]: TCP_NODELAY option set on local socket 2009.02.24 13:34:39 LOG5[3752:760]: smtp accepted connection from 127.0.0.1:3063 2009.02.24 13:34:39 LOG7[3752:760]: FD 240 in non-blocking mode 2009.02.24 13:34:39 LOG7[3752:760]: smtp connecting 209.85.201.111:465 2009.02.24 13:34:39 LOG7[3752:760]: connect_wait: waiting 10 seconds 2009.02.24 13:34:39 LOG7[3752:760]: connect_wait: connected 2009.02.24 13:34:39 LOG5[3752:760]: smtp connected remote server from 192.168.1.100:3064 2009.02.24 13:34:39 LOG7[3752:760]: Remote FD=240 initialized 2009.02.24 13:34:39 LOG7[3752:760]: TCP_NODELAY option set on remote socket 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): before/connect initialization 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): SSLv3 write client hello A 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): SSLv3 read server hello A 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): SSLv3 read server certificate A 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): SSLv3 read server done A 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): SSLv3 write client key exchange A 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): SSLv3 write change cipher spec A 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): SSLv3 write finished A 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): SSLv3 flush data 2009.02.24 13:34:39 LOG7[3752:760]: SSL state (connect): SSLv3 read finished A 2009.02.24 13:34:39 LOG7[3752:760]: 1 items in the session cache 2009.02.24 13:34:39 LOG7[3752:760]: 1 client connects (SSL_connect()) 2009.02.24 13:34:39 LOG7[3752:760]: 1 client connects that finished 2009.02.24 13:34:39 LOG7[3752:760]: 0 client renegotiations requested 2009.02.24 13:34:39 LOG7[3752:760]: 0 server connects (SSL_accept()) 2009.02.24 13:34:39 LOG7[3752:760]: 0 server connects that finished 2009.02.24 13:34:39 LOG7[3752:760]: 0 server renegotiations requested 2009.02.24 13:34:39 LOG7[3752:760]: 0 session cache hits 2009.02.24 13:34:39 LOG7[3752:760]: 0 session cache misses 2009.02.24 13:34:39 LOG7[3752:760]: 0 session cache timeouts 2009.02.24 13:34:39 LOG6[3752:760]: SSL connected: new session negotiated 2009.02.24 13:34:39 LOG6[3752:760]: Negotiated ciphers: RC4-MD5 SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 2009.02.24 13:34:39 LOG7[3752:760]: SSL socket closed on SSL_read 2009.02.24 13:34:39 LOG7[3752:760]: Socket write shutdown 2009.02.24 13:34:39 LOG5[3752:760]: Connection closed: 20 bytes sent to SSL, 226 bytes sent to socket 2009.02.24 13:34:39 LOG7[3752:760]: smtp finished (0 left) 2009.02.24 13:34:39 LOG7[3752:1576]: pop accepted FD=232 from 127.0.0.1:3065 2009.02.24 13:34:39 LOG7[3752:1576]: Creating a new thread 2009.02.24 13:34:39 LOG7[3752:1576]: New thread created 2009.02.24 13:34:39 LOG7[3752:376]: pop started 2009.02.24 13:34:39 LOG7[3752:376]: FD 232 in non-blocking mode 2009.02.24 13:34:39 LOG7[3752:376]: TCP_NODELAY option set on local socket 2009.02.24 13:34:39 LOG5[3752:376]: pop accepted connection from 127.0.0.1:3065 2009.02.24 13:34:39 LOG7[3752:376]: FD 240 in non-blocking mode 2009.02.24 13:34:39 LOG7[3752:376]: pop connecting 209.85.147.109:995 2009.02.24 13:34:39 LOG7[3752:376]: connect_wait: waiting 10 seconds 2009.02.24 13:34:42 LOG7[3752:376]: connect_wait: connected 2009.02.24 13:34:42 LOG5[3752:376]: pop connected remote server from 192.168.1.100:3066 2009.02.24 13:34:42 LOG7[3752:376]: Remote FD=240 initialized 2009.02.24 13:34:42 LOG7[3752:376]: TCP_NODELAY option set on remote socket 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): before/connect initialization 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): SSLv3 write client hello A 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): SSLv3 read server hello A 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): SSLv3 read server certificate A 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): SSLv3 read server done A 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): SSLv3 write client key exchange A 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): SSLv3 write change cipher spec A 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): SSLv3 write finished A 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): SSLv3 flush data 2009.02.24 13:34:42 LOG7[3752:376]: SSL state (connect): SSLv3 read finished A 2009.02.24 13:34:42 LOG7[3752:376]: 1 items in the session cache 2009.02.24 13:34:42 LOG7[3752:376]: 1 client connects (SSL_connect()) 2009.02.24 13:34:42 LOG7[3752:376]: 1 client connects that finished 2009.02.24 13:34:42 LOG7[3752:376]: 0 client renegotiations requested 2009.02.24 13:34:42 LOG7[3752:376]: 0 server connects (SSL_accept()) 2009.02.24 13:34:42 LOG7[3752:376]: 0 server connects that finished 2009.02.24 13:34:42 LOG7[3752:376]: 0 server renegotiations requested 2009.02.24 13:34:42 LOG7[3752:376]: 0 session cache hits 2009.02.24 13:34:42 LOG7[3752:376]: 0 session cache misses 2009.02.24 13:34:42 LOG7[3752:376]: 0 session cache timeouts 2009.02.24 13:34:42 LOG6[3752:376]: SSL connected: new session negotiated 2009.02.24 13:34:42 LOG6[3752:376]: Negotiated ciphers: RC4-MD5 SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 2009.02.24 13:34:42 LOG7[3752:1576]: smtp accepted FD=264 from 127.0.0.1:3067 2009.02.24 13:34:42 LOG7[3752:1576]: Creating a new thread 2009.02.24 13:34:42 LOG7[3752:1576]: New thread created 2009.02.24 13:34:42 LOG7[3752:216]: smtp started 2009.02.24 13:34:42 LOG7[3752:216]: FD 264 in non-blocking mode 2009.02.24 13:34:42 LOG7[3752:216]: TCP_NODELAY option set on local socket 2009.02.24 13:34:42 LOG5[3752:216]: smtp accepted connection from 127.0.0.1:3067 2009.02.24 13:34:42 LOG7[3752:216]: FD 288 in non-blocking mode 2009.02.24 13:34:42 LOG7[3752:216]: smtp connecting 209.85.201.109:465 2009.02.24 13:34:42 LOG7[3752:216]: connect_wait: waiting 10 seconds 2009.02.24 13:34:42 LOG7[3752:216]: connect_wait: connected 2009.02.24 13:34:42 LOG5[3752:216]: smtp connected remote server from 192.168.1.100:3068 2009.02.24 13:34:42 LOG7[3752:216]: Remote FD=288 initialized 2009.02.24 13:34:42 LOG7[3752:216]: TCP_NODELAY option set on remote socket 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): before/connect initialization 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): SSLv3 write client hello A 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): SSLv3 read server hello A 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): SSLv3 read server certificate A 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): SSLv3 read server done A 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): SSLv3 write client key exchange A 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): SSLv3 write change cipher spec A 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): SSLv3 write finished A 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): SSLv3 flush data 2009.02.24 13:34:42 LOG7[3752:216]: SSL state (connect): SSLv3 read finished A 2009.02.24 13:34:42 LOG7[3752:216]: 2 items in the session cache 2009.02.24 13:34:42 LOG7[3752:216]: 2 client connects (SSL_connect()) 2009.02.24 13:34:42 LOG7[3752:216]: 2 client connects that finished 2009.02.24 13:34:42 LOG7[3752:216]: 0 client renegotiations requested 2009.02.24 13:34:42 LOG7[3752:216]: 0 server connects (SSL_accept()) 2009.02.24 13:34:42 LOG7[3752:216]: 0 server connects that finished 2009.02.24 13:34:42 LOG7[3752:216]: 0 server renegotiations requested 2009.02.24 13:34:42 LOG7[3752:216]: 0 session cache hits 2009.02.24 13:34:42 LOG7[3752:216]: 0 session cache misses 2009.02.24 13:34:42 LOG7[3752:216]: 0 session cache timeouts 2009.02.24 13:34:42 LOG6[3752:216]: SSL connected: new session negotiated 2009.02.24 13:34:42 LOG6[3752:216]: Negotiated ciphers: RC4-MD5 SSLv3 Kx=RSA Au=RSA Enc=RC4(128) Mac=MD5 2009.02.24 13:34:43 LOG3[3752:216]: readsocket: Connection reset by peer (WSAECONNRESET) (10054) 2009.02.24 13:34:43 LOG5[3752:216]: Connection reset: 63 bytes sent to SSL, 335 bytes sent to socket 2009.02.24 13:34:43 LOG7[3752:216]: smtp finished (1 left) 2009.02.24 13:35:43 LOG7[3752:376]: SSL socket closed on SSL_read 2009.02.24 13:35:43 LOG7[3752:376]: Socket write shutdown 2009.02.24 13:35:43 LOG5[3752:376]: Connection closed: 48 bytes sent to SSL, 131 bytes sent to socket 2009.02.24 13:35:43 LOG7[3752:376]: pop finished (0 left) Richard Brust rbrDataSolutions/ACT! Certified Consulting http://www.rbrDataSolutions.com 916/769-9411

1 0

Stunnel error
by Reinier van der Gugten 23 Feb '09

23 Feb '09

Hi, I use the STunnel tool to connect to my Ms-SQL database. And so far this works nice. However at one organization I have the following problem: << connect_wait: s_poll_wait timeout>> And the connection fails. Here is the log file and config file. Can you give me any hints how to check where it goes wrong? Thanks. Reinier. 2009.02.23 14:45:12 LOG7[2156:3096]: RAND_status claims sufficient entropy for the PRNG 2009.02.23 14:45:12 LOG7[2156:3096]: PRNG seeded successfully 2009.02.23 14:45:12 LOG7[2156:3096]: Certificate: stunnel.pem 2009.02.23 14:45:12 LOG7[2156:3096]: Certificate loaded 2009.02.23 14:45:12 LOG7[2156:3096]: Key file: stunnel.pem 2009.02.23 14:45:12 LOG7[2156:3096]: Private key loaded 2009.02.23 14:45:12 LOG7[2156:3096]: SSL context initialized for service SQLServer 2009.02.23 14:45:12 LOG5[2156:3096]: stunnel 4.26 on x86-pc-mingw32-gnu with OpenSSL 0.9.8i 15 Sep 2008 2009.02.23 14:45:12 LOG5[2156:3096]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2009.02.23 14:45:12 LOG5[2156:3852]: No limit detected for the number of clients 2009.02.23 14:45:12 LOG7[2156:3852]: FD 184 in non-blocking mode 2009.02.23 14:45:12 LOG7[2156:3852]: SO_REUSEADDR option set on accept socket 2009.02.23 14:45:12 LOG7[2156:3852]: SQLServer bound to 127.0.0.1:31433 2009.02.23 14:49:25 LOG7[2156:3852]: SQLServer accepted FD=208 from 127.0.0.1:2912 2009.02.23 14:49:25 LOG7[2156:3852]: Creating a new thread 2009.02.23 14:49:25 LOG7[2156:3852]: New thread created 2009.02.23 14:49:25 LOG7[2156:996]: SQLServer started 2009.02.23 14:49:25 LOG7[2156:996]: FD 208 in non-blocking mode 2009.02.23 14:49:25 LOG7[2156:996]: TCP_NODELAY option set on local socket 2009.02.23 14:49:25 LOG5[2156:996]: SQLServer accepted connection from 127.0.0.1:2912 2009.02.23 14:49:25 LOG7[2156:996]: FD 232 in non-blocking mode 2009.02.23 14:49:25 LOG7[2156:996]: SQLServer connecting 10.17.98.33:8080 2009.02.23 14:49:25 LOG7[2156:996]: connect_wait: waiting 60 seconds 2009.02.23 14:50:25 LOG6[2156:996]: connect_wait: s_poll_wait timeout 2009.02.23 14:50:25 LOG5[2156:996]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2009.02.23 14:50:25 LOG7[2156:996]: SQLServer finished (0 left) ; Sample stunnel configuration file by Michal Trojnara 2002-2006 ; Some options used here may not be adequate for your particular configuration ; Certificate/key is needed in server mode and optional in client mode ; The default certificate is provided only for testing and should not ; be used in a production environment cert = stunnel.pem ;key = stunnel.pem ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Authentication stuff ;verify = 2 ; Don't forget to c_rehash CApath ;CApath = certs ; It's often easier to use CAfile ;CAfile = certs.pem ; Don't forget to c_rehash CRLpath ;CRLpath = crls ; Alternatively you can use CRLfile ;CRLfile = crls.pem ; Some debugging stuff useful for troubleshooting debug = 7 ;output = stunnel.log ; Use it for client mode client = yes ; Service-level configuration [SQLServer] accept = 127.0.0.1:31433 ;connect = xx.xx.xxx.xxx:443 connect = 10.17.98.33:8080 protocol = connect protocolHost = xx.xx.xxx.xxx:443 ;session cache timeout session = 60 ;time to wait for expected data TIMEOUTbusy = 60 ;time to wait for close_notify (set to 0 for buggy MSIE) ;TIMEOUTclose = 30 ;time to wait to connect a remote host TIMEOUTconnect = 60 ;time to keep an idle connection ;TIMEOUTidle = 60

1 0

Re: [stunnel-users] stunnel client connecting to host with dynamic
by Adamson H 13 Feb '09

13 Feb '09

>Adamson H wrote: >> Hi, stunnel 4.26 solves a number of issues running on FreeBSD. However, >> a stunnel client still has a problem reconnecting to a host with dynamic >> DNS service after the host IP has changed. Stunnel client seems unaware >> of the host update, pointing the dynamic DNS name to the old outdated >> IP. In order to get reconnected to the host, I have to create a cron >> script to detect the IP change and restart stunnel on the stunnel >> client. My client conf file has the following: >> >> [1873] >> accept = 1873 >> connect = hostname.dynaip.org:1873 >> >> The ip of hostname.dynaip.org changes at a random interval. > >The solution is: >delay = yes > >Best regards, >Mike >_______________________________________________ >stunnel-users mailing list >stunnel-users(a)mirt.net <mailto:stunnel-users@mirt.net> >http://stunnel.mirt.net/mailman/listinfo/stunnel-users I added delay = yes to my stunnel client conf file and removed the cron script. The rsync job (873) failed after the IP of the stunnel host had changed. I had to manually restart stunnel to get the job done and put the cron script back again. delay = yes does not with work with ddns. Regards, Adamson H

3 4

stunnel hanging (libwrap)
by Ulrich Wisser 11 Feb '09

11 Feb '09

Hi, on my current project I have a strange error. Stunnel will work for months and suddenly stop accepting connections. At other times it will fail after a couple of hours. It doesn't crash. Connections are still accepted, but no SSL negotiation does take place. Please find a log below. It seems to be some problem with libwrap. As you can see in the logs the last usage of libwrap doesn't release libwrap properly. "Released libwrap process" log statement is missing. And after that just everything hangs waiting for libwrap. But why is this happening? Our host.allow and host.deny files are empty. libwrap is supposed to allow everything. Any suggestions are welcome! Thanks in advance Ulrich 2009.02.10 09:23:16 LOG7[24594:3083130544]: epp accepted FD=22 from 212.227.111.32:59551 2009.02.10 09:23:16 LOG7[24594:3082640272]: epp started 2009.02.10 09:23:16 LOG7[24594:3082640272]: FD 22 in non-blocking mode 2009.02.10 09:23:16 LOG7[24594:3082640272]: TCP_NODELAY option set on local socket 2009.02.10 09:23:16 LOG7[24594:3082640272]: Waiting for a libwrap process 2009.02.10 09:23:16 LOG7[24594:3082640272]: Acquired libwrap process #4 2009.02.10 09:23:16 LOG7[24594:3082640272]: Releasing libwrap process #4 2009.02.10 09:23:16 LOG7[24594:3082640272]: Released libwrap process #4 2009.02.10 09:23:16 LOG7[24594:3082640272]: epp permitted by libwrap from 212.227.111.32:59551 2009.02.10 09:23:16 LOG5[24594:3082640272]: epp accepted connection from 212.227.111.32:59551 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): before/accept initialization 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 read client hello A 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 write server hello A 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 write certificate A 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 write server done A 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 flush data 2009.02.10 09:23:16 LOG7[24594:3082918800]: Socket closed on read 2009.02.10 09:23:16 LOG7[24594:3082918800]: SSL write shutdown 2009.02.10 09:23:16 LOG7[24594:3082918800]: SSL alert (write): warning: close notify 2009.02.10 09:23:16 LOG6[24594:3082918800]: SSL socket closed on SSL_shutdown 2009.02.10 09:23:16 LOG7[24594:3082918800]: Socket write shutdown 2009.02.10 09:23:16 LOG5[24594:3082918800]: Connection closed: 2249 bytes sent to SSL, 1169 bytes sent to socket 2009.02.10 09:23:16 LOG7[24594:3082918800]: epp finished (5 left) 2009.02.10 09:23:16 LOG7[24594:3082709904]: SSL state (accept): SSLv3 read client key exchange A 2009.02.10 09:23:16 LOG7[24594:3082709904]: SSL state (accept): SSLv3 read finished A 2009.02.10 09:23:16 LOG7[24594:3082709904]: SSL state (accept): SSLv3 write change cipher spec A 2009.02.10 09:23:16 LOG7[24594:3082709904]: SSL state (accept): SSLv3 write finished A 2009.02.10 09:23:16 LOG7[24594:3082709904]: SSL state (accept): SSLv3 flush data 2009.02.10 09:23:16 LOG7[24594:3082709904]: 36 items in the session cache 2009.02.10 09:23:16 LOG7[24594:3082709904]: 0 client connects (SSL_connect()) 2009.02.10 09:23:16 LOG7[24594:3082709904]: 0 client connects that finished 2009.02.10 09:23:16 LOG7[24594:3082709904]: 0 client renegotiations requested 2009.02.10 09:23:16 LOG7[24594:3082709904]: 292 server connects (SSL_accept()) 2009.02.10 09:23:16 LOG7[24594:3082709904]: 290 server connects that finished 2009.02.10 09:23:16 LOG7[24594:3082709904]: 0 server renegotiations requested 2009.02.10 09:23:16 LOG7[24594:3082709904]: 41 session cache hits 2009.02.10 09:23:16 LOG7[24594:3082709904]: 1 session cache misses 2009.02.10 09:23:16 LOG7[24594:3082709904]: 6 session cache timeouts 2009.02.10 09:23:16 LOG6[24594:3082709904]: SSL accepted: new session negotiated 2009.02.10 09:23:16 LOG6[24594:3082709904]: Negotiated ciphers: AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1 2009.02.10 09:23:16 LOG7[24594:3082709904]: FD 16 in non-blocking mode 2009.02.10 09:23:16 LOG7[24594:3082709904]: epp connecting 127.0.0.1:9777 2009.02.10 09:23:16 LOG7[24594:3082709904]: connect_wait: waiting 10 seconds 2009.02.10 09:23:16 LOG7[24594:3082709904]: connect_wait: connected 2009.02.10 09:23:16 LOG5[24594:3082709904]: epp connected remote server from 127.0.0.1:40831 2009.02.10 09:23:16 LOG7[24594:3082709904]: Remote FD=16 initialized 2009.02.10 09:23:16 LOG7[24594:3082709904]: TCP_NODELAY option set on remote socket 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 read client key exchange A 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 read finished A 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 write change cipher spec A 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 write finished A 2009.02.10 09:23:16 LOG7[24594:3082640272]: SSL state (accept): SSLv3 flush data 2009.02.10 09:23:16 LOG7[24594:3082640272]: 37 items in the session cache 2009.02.10 09:23:16 LOG7[24594:3082640272]: 0 client connects (SSL_connect()) 2009.02.10 09:23:16 LOG7[24594:3082640272]: 0 client connects that finished 2009.02.10 09:23:16 LOG7[24594:3082640272]: 0 client renegotiations requested 2009.02.10 09:23:16 LOG7[24594:3082640272]: 292 server connects (SSL_accept()) 2009.02.10 09:23:16 LOG7[24594:3082640272]: 291 server connects that finished 2009.02.10 09:23:16 LOG7[24594:3082640272]: 0 server renegotiations requested 2009.02.10 09:23:16 LOG7[24594:3082640272]: 41 session cache hits 2009.02.10 09:23:16 LOG7[24594:3082640272]: 1 session cache misses 2009.02.10 09:23:16 LOG7[24594:3082640272]: 6 session cache timeouts 2009.02.10 09:23:16 LOG6[24594:3082640272]: SSL accepted: new session negotiated 2009.02.10 09:23:16 LOG6[24594:3082640272]: Negotiated ciphers: AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1 2009.02.10 09:23:16 LOG7[24594:3082640272]: FD 18 in non-blocking mode 2009.02.10 09:23:16 LOG7[24594:3082640272]: epp connecting 127.0.0.1:9777 2009.02.10 09:23:16 LOG7[24594:3082640272]: connect_wait: waiting 10 seconds 2009.02.10 09:23:16 LOG7[24594:3082640272]: connect_wait: connected 2009.02.10 09:23:16 LOG5[24594:3082640272]: epp connected remote server from 127.0.0.1:40832 2009.02.10 09:23:16 LOG7[24594:3082640272]: Remote FD=18 initialized 2009.02.10 09:23:16 LOG7[24594:3082640272]: TCP_NODELAY option set on remote socket 2009.02.10 09:23:16 LOG7[24594:3083127696]: Socket closed on read 2009.02.10 09:23:16 LOG7[24594:3083127696]: SSL write shutdown 2009.02.10 09:23:16 LOG7[24594:3083127696]: SSL alert (write): warning: close notify 2009.02.10 09:23:16 LOG6[24594:3083127696]: SSL socket closed on SSL_shutdown 2009.02.10 09:23:16 LOG7[24594:3083127696]: Socket write shutdown 2009.02.10 09:23:16 LOG5[24594:3083127696]: Connection closed: 2249 bytes sent to SSL, 1169 bytes sent to socket 2009.02.10 09:23:16 LOG7[24594:3083127696]: epp finished (4 left) 2009.02.10 09:23:30 LOG7[24594:3083130544]: epp accepted FD=15 from 62.116.129.3:3503 2009.02.10 09:23:30 LOG7[24594:3083127696]: epp started 2009.02.10 09:23:30 LOG7[24594:3083127696]: FD 15 in non-blocking mode 2009.02.10 09:23:30 LOG7[24594:3083127696]: TCP_NODELAY option set on local socket 2009.02.10 09:23:30 LOG7[24594:3083127696]: Waiting for a libwrap process 2009.02.10 09:23:30 LOG7[24594:3083127696]: Acquired libwrap process #4 2009.02.10 09:23:30 LOG7[24594:3083130544]: epp accepted FD=17 from 62.116.129.3:3504 2009.02.10 09:23:30 LOG7[24594:3082918800]: epp started 2009.02.10 09:23:30 LOG7[24594:3082918800]: FD 17 in non-blocking mode 2009.02.10 09:23:30 LOG7[24594:3082918800]: TCP_NODELAY option set on local socket 2009.02.10 09:23:30 LOG7[24594:3082918800]: Waiting for a libwrap process 2009.02.10 09:23:30 LOG7[24594:3083127696]: Releasing libwrap process #4 2009.02.10 09:23:45 LOG7[24594:3083130544]: epp accepted FD=23 from 62.116.129.3:35076 2009.02.10 09:23:45 LOG7[24594:3082779536]: epp started 2009.02.10 09:23:45 LOG7[24594:3082779536]: FD 23 in non-blocking mode 2009.02.10 09:23:45 LOG7[24594:3082779536]: TCP_NODELAY option set on local socket 2009.02.10 09:23:45 LOG7[24594:3082779536]: Waiting for a libwrap process 2009.02.10 09:23:48 LOG7[24594:3083130544]: epp accepted FD=24 from 212.209.10.53:4853 2009.02.10 09:23:48 LOG7[24594:3083058064]: epp started 2009.02.10 09:23:48 LOG7[24594:3083058064]: FD 24 in non-blocking mode 2009.02.10 09:23:48 LOG7[24594:3083058064]: TCP_NODELAY option set on local socket 2009.02.10 09:23:48 LOG7[24594:3083058064]: Waiting for a libwrap process 2009.02.10 09:24:01 LOG7[24594:3083130544]: epp accepted FD=25 from 62.116.129.3:35084 2009.02.10 09:24:01 LOG7[24594:3082570640]: epp started 2009.02.10 09:24:01 LOG7[24594:3082570640]: FD 25 in non-blocking mode 2009.02.10 09:24:01 LOG7[24594:3082570640]: TCP_NODELAY option set on local socket 2009.02.10 09:24:01 LOG7[24594:3082570640]: Waiting for a libwrap process 2009.02.10 09:24:50 LOG7[24594:3083130544]: epp accepted FD=26 from 91.203.4.58:3814 2009.02.10 09:24:50 LOG7[24594:3082501008]: epp started 2009.02.10 09:24:50 LOG7[24594:3082501008]: FD 26 in non-blocking mode 2009.02.10 09:24:50 LOG7[24594:3082501008]: TCP_NODELAY option set on local socket 2009.02.10 09:24:50 LOG7[24594:3082501008]: Waiting for a libwrap process 2009.02.10 09:25:29 LOG7[24594:3083130544]: epp accepted FD=27 from 87.96.215.128:34595 2009.02.10 09:25:29 LOG7[24594:3082431376]: epp started 2009.02.10 09:25:29 LOG7[24594:3082431376]: FD 27 in non-blocking mode 2009.02.10 09:25:29 LOG7[24594:3082431376]: TCP_NODELAY option set on local socket 2009.02.10 09:25:29 LOG7[24594:3082431376]: Waiting for a libwrap process 2009.02.10 09:25:40 LOG7[24594:3083130544]: epp accepted FD=28 from 195.249.40.26:36799 2009.02.10 09:25:40 LOG7[24594:3082361744]: epp started 2009.02.10 09:25:40 LOG7[24594:3082361744]: FD 28 in non-blocking mode

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