stunnel-users December 2009

stunnel-users@stunnel.org

13 participants
13 discussions

Stunnel 4 failing to connect to gmail
by Asif Iqbal 11 Dec '20

11 Dec '20

I am faling to connect to gmail. Not sure what that bind error means. iqbala@ghar:~$ sudo stunnel4 2008.12.15 13:53:17 LOG7[3839:3083650736]: Snagged 64 random bytes from /home/iqbala/.rnd 2008.12.15 13:53:17 LOG7[3839:3083650736]: Wrote 1024 new random bytes to /home/iqbala/.rnd 2008.12.15 13:53:17 LOG7[3839:3083650736]: RAND_status claims sufficient entropy for the PRNG 2008.12.15 13:53:17 LOG7[3839:3083650736]: PRNG seeded successfully 2008.12.15 13:53:17 LOG7[3839:3083650736]: Certificate: /etc/stunnel/stunnel.pem 2008.12.15 13:53:17 LOG7[3839:3083650736]: Certificate loaded 2008.12.15 13:53:17 LOG7[3839:3083650736]: Key file: /etc/stunnel/stunnel.pem 2008.12.15 13:53:17 LOG7[3839:3083650736]: Private key loaded 2008.12.15 13:53:17 LOG7[3839:3083650736]: SSL context initialized for service ssmtp 2008.12.15 13:53:17 LOG5[3839:3083650736]: stunnel 4.22 on i486-pc-linux-gnu with OpenSSL 0.9.8g 19 Oct 2007 2008.12.15 13:53:17 LOG5[3839:3083650736]: Threading:PTHREAD SSL:ENGINE Sockets:POLL,IPv6 Auth:LIBWRAP 2008.12.15 13:53:17 LOG6[3839:3083650736]: file ulimit = 1024 (can be changed with 'ulimit -n') 2008.12.15 13:53:17 LOG6[3839:3083650736]: poll() used - no FD_SETSIZE limit for file descriptors 2008.12.15 13:53:17 LOG5[3839:3083650736]: 500 clients allowed 2008.12.15 13:53:17 LOG7[3839:3083650736]: FD 10 in non-blocking mode 2008.12.15 13:53:17 LOG7[3839:3083650736]: FD 11 in non-blocking mode 2008.12.15 13:53:17 LOG7[3839:3083650736]: FD 12 in non-blocking mode 2008.12.15 13:53:17 LOG7[3839:3083650736]: SO_REUSEADDR option set on accept socket 2008.12.15 13:53:17 LOG3[3839:3083650736]: Error binding ssmtp to 74.125.93.111:587 2008.12.15 13:53:17 LOG3[3839:3083650736]: bind: Cannot assign requested address (99) Here is how my conf file looks like iqbala@ghar:~$ cat /etc/stunnel/stunnel.conf | egrep -v "^;|^$" cert = /etc/stunnel/stunnel.pem foreground = yes sslVersion = SSLv3 chroot = /var/lib/stunnel4/ setuid = stunnel4 setgid = stunnel4 pid = /stunnel4.pid socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 debug = 7 output = /var/log/stunnel4/stunnel.log client = yes [ssmtp] accept = smtp.gmail.com:587 connect = 25 Asif Iqbal PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu

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Re: [stunnel-users] Stunnel on the same machine
by subrata＠indiatimes.com 01 Aug '11

01 Aug '11

The configuration files are : pid = /var/stunnel.pid ;chroot = /var/lib/stunnel setuid = nobody setgid = nobody foreground =yes ; Use it for client mode client = yes ; Service-level configuration [pop3s] accept = 995 connect = 110 [imaps] accept = 993 connect = 143 [ssmtp] accept = 465 connect = 25 [mysqls] accept = 3307 connect = 192.168.1.6:3307 On 192.168.1.6 ---------------------- pid = /var/stunnel.pid setuid =nobody setgid = nobody foreground = yes client = no ; Service-level configuration [pop3s] accept = 995 connect = 110 [imaps] accept = 993 connect = 143 [ssmtp] accept = 465 connect = 25 [mysqls] accept =3307 connect =3306 connecting like /usr/local/mysql/bin/mysql -h 127.0.0.1 -u root -p -P 3307 Enter password: On entring password the following lines appear : ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 104 Subrata ----- Original Message ----- From: Brian Hatch <bri(a)stunnel.org> To: subrata(a)indiatimes.com Sent: Sun, 7 Oct 2007 10:02:17 +0530 (IST) Subject: Re: [stunnel-users] Stunnel on the same machine Near 2007-10-05 22:17 +0530, subrata(a)indiatimes.com insisted: > After starting stunnel and connecting the mysql client/usr/local/mysql/bin/mysql -h 127.0.0.1 -u root -p the flow gets stuck at the Enter password prompt any suggestions how to proceed from there. What do your stunnel configuration files look like? Other problem: mysql client may decide to use a local domain socket when connecting to localhost, thwarting your attempts to go via Stunnel. You might want to 'strace mysql ...' and look for the connect() lines. -- Brian Hatch Time flies like an Systems and arrow. Fruit flies Security Engineer like a banana. http://www.ifokr.org/bri/ Every message PGP signed -- My life has changed. What about yours? Log on to the new Indiatimes Mail and Live out of the Inbox!

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what's wrong? error=unable to get local issuer certificate
by Carsten Krüger 29 Dec '09

29 Dec '09

I think it should work, * should match homie 1. connected with "openssl s_client -connect mail.neroon.com:995", pasted cert to dreamhost.pem 2. used this -----------stunnel.conf------------- debug=7 client = yes [pop3] accept = 110 connect = homie.mail.dreamhost.com:995 verify=1 CAfile=c:\temp\dreamhost.pem -----------stunnel.conf------------- 3. connect to localost:110, got "unable to get local issuer certificate 2009.12.29 16:04:25 LOG7[3044:5700]: Snagged 64 random bytes from C:/.rnd 2009.12.29 16:04:25 LOG7[3044:5700]: Wrote 0 new random bytes to C:/.rnd 2009.12.29 16:04:25 LOG7[3044:5700]: RAND_status claims sufficient entropy for the PRNG 2009.12.29 16:04:25 LOG7[3044:5700]: PRNG seeded successfully 2009.12.29 16:04:25 LOG7[3044:5700]: Loaded verify certificates from c:\temp\dreamhost.pem 2009.12.29 16:04:25 LOG7[3044:5700]: Loaded c:\temp\dreamhost.pem revocation lookup file 2009.12.29 16:04:25 LOG7[3044:5700]: SSL context initialized for service pop3 2009.12.29 16:04:25 LOG5[3044:5700]: stunnel 4.29 on x86-pc-mingw32-gnu with OpenSSL 0.9.8l 5 Nov 2009 2009.12.29 16:04:25 LOG5[3044:5700]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6 2009.12.29 16:04:25 LOG5[3044:4320]: No limit detected for the number of clients 2009.12.29 16:04:25 LOG7[3044:4320]: FD 1832 in non-blocking mode 2009.12.29 16:04:25 LOG7[3044:4320]: SO_REUSEADDR option set on accept socket 2009.12.29 16:04:25 LOG7[3044:4320]: pop3 bound to 0.0.0.0:110 2009.12.29 16:04:40 LOG7[3044:4320]: pop3 accepted FD=1808 from 127.0.0.1:3257 2009.12.29 16:04:40 LOG7[3044:4320]: Creating a new thread 2009.12.29 16:04:40 LOG7[3044:4320]: New thread created 2009.12.29 16:04:40 LOG7[3044:2340]: pop3 started 2009.12.29 16:04:40 LOG7[3044:2340]: FD 1808 in non-blocking mode 2009.12.29 16:04:40 LOG5[3044:2340]: pop3 accepted connection from 127.0.0.1:3257 2009.12.29 16:04:40 LOG7[3044:2340]: FD 1768 in non-blocking mode 2009.12.29 16:04:40 LOG6[3044:2340]: connect_blocking: connecting 208.97.132.208:995 2009.12.29 16:04:40 LOG7[3044:2340]: connect_blocking: s_poll_wait 208.97.132.208:995: waiting 10 seconds 2009.12.29 16:04:40 LOG5[3044:2340]: connect_blocking: connected 208.97.132.208:995 2009.12.29 16:04:40 LOG5[3044:2340]: pop3 connected remote server from 192.168.0.2:3258 2009.12.29 16:04:40 LOG7[3044:2340]: Remote FD=1768 initialized 2009.12.29 16:04:40 LOG7[3044:2340]: SSL state (connect): before/connect initialization 2009.12.29 16:04:40 LOG7[3044:2340]: SSL state (connect): SSLv3 write client hello A 2009.12.29 16:04:40 LOG7[3044:2340]: SSL state (connect): SSLv3 read server hello A 2009.12.29 16:04:40 LOG4[3044:2340]: VERIFY ERROR: depth=0, error=unable to get local issuer certificate: /C=US/ST=California/L=Brea/O=Dreamhost.com/OU=Security/CN=*.mail.dreamhost.com/emailAddress=support(a)dreamhost.com 2009.12.29 16:04:40 LOG7[3044:2340]: SSL alert (write): fatal: bad certificate 2009.12.29 16:04:40 LOG3[3044:2340]: SSL_connect: 14090086: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed 2009.12.29 16:04:40 LOG5[3044:2340]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2009.12.29 16:04:40 LOG7[3044:2340]: pop3 finished (0 left)

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Using stunnel instead of SSL API
by Vladimir Stariradev 24 Dec '09

24 Dec '09

Hi Guys, I'm working on a java mobile app (J2ME MIDP 2.0) which connects to a java server, which I created. The java mobile app is an instant messenger. I want to use stunnel to encrypt the communication between the app and the server. At the moment the server runs on my localhost on port 5555 and accepts connections from the mobile device emulator I have running on the same machine. Eventually I want to transfer the mobile app on to my mobile and use it from there. My machine is running the following versions stunnel 4.29 on x86-pc-mingw32-gnu with OpenSSL 0.9.8l on Windows 7 x64. I have not yet configured a pam or config file but I would like to continue listening on port 5555 with my own certificate (but for now any will do). Will the fact that I'm running both my server and device emulator on one machine mean that it'll bypass stunnel and I'll never know if it works or not? Should I have my mobile app use SecureConnection (SSL encrypted) class? In that case, I'd have to make the server listen for SSL connections too. That would defeat the purpose of stunnel. Help on configuration is welcome. Thanks for reading, I'm looking forward to your replies Vladimir

2 1

privileges not dropped before libwrap processes are spawned
by Micah Anderson 21 Dec '09

21 Dec '09

Hi, I recently stumbled on http://mirt.net/pipermail/stunnel-users/2008-May/001977.html which is exactly what I am seeing with version 4.27 of stunnel, namely the daemon is not switching to the setuid/setgid specified in the config before it is spawned. This means that I get 6 processes, 5 run as root with only one (albeit the one lisenting on the specified sockets) dropping privs to the specified user. The follow-up response from Mike was: I'll modify stunnel to delay spawning libwrap processes until privileges are dropped. and indeed, I find in the Changelog file for version 4.25 the following Bugfixes: * Bugfixes - Spawning libwrap processes delayed until privileges are dropped. However, it seems that either this fix either didn't make it in, or it somehow managed to creep its way back out because it is happening in 4.27. Thanks, micah

2 3

BBwin hanging windows
by Gregory Wege 18 Dec '09

18 Dec '09

Hey Guys, We have the following problem: Bbwin is sending traffic to 2 monitoring servers and is encrypted via stunnel. If one of the monitoring servers goes down, the number of ports being used by bbwin client increases to the point where the box is unusable - no more ports available on the windows box being monitored. If we kill the bbwin process, the problem goes away temporarily - after a short period of time, the problem returns. The problem continues even after the failed hobbit server recovers, and only clears up when we kill the bbwin process. * Windows version Server 2003 * bbwin versions 0.11, 0.12 * stunnel version 4.25 * hobbit server version 4.2.2 Output of the stunnel log shows the following error: 2009.12.16 06:56:19 LOG7[2336:2460]: New thread created 2009.12.16 06:56:19 LOG7[2336:4016]: hobbit_ssl started 2009.12.16 06:56:19 LOG7[2336:4016]: FD 356 in non-blocking mode 2009.12.16 06:56:19 LOG7[2336:4016]: TCP_NODELAY option set on local socket 2009.12.16 06:56:19 LOG5[2336:4016]: hobbit_ssl accepted connection from 127.0.0.1:1725 2009.12.16 06:56:19 LOG7[2336:4016]: FD 396 in non-blocking mode 2009.12.16 06:56:19 LOG6[2336:4016]: connect_blocking: connecting 10.132.55.24:1982 2009.12.16 06:56:19 LOG3[2336:4016]: connect_blocking: connect 10.132.55.24:1982: No buffer space available (WSAENOBUFS) (10055) 2009.12.16 06:56:19 LOG5[2336:4016]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket 2009.12.16 06:56:19 LOG7[2336:4016]: hobbit_ssl finished (0 left) Can something be added to my stunnel.conf to prevent this from happening? Any help would be greatly appreciated. Thanks.

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Hey Stunnel-Users, I forgot to mention...
by Sreejith Mohan Menon 17 Dec '09

17 Dec '09

1 0

Tunnel iPhone - Server
by LoLoVioLo 14 Dec '09

14 Dec '09

Hi all, It is my first post. Sorry if common question but didn't find answer in archives or google. The fact is that I am using an iPhone with a data plan that only allow ports 80 and 443 (http and https). My aim is to be able to use all ports (mail, ftp, msn, etc). The idea is to tunnel all TCP connections between my computer here and my server at home. iPhone <----port-443----> Linux Server <----all-ports----> Internet I know there is alternatives for each service (webmail, webmessenger, etc.) but I think that it is technically possible to have something running that allow using of usual software. I also know that this usage is typically VPN but there is no VPN client for iPhone that allow custom ports and not sure my data plan can route GRE protocol. By the way STunnel was ported to the iPhone. There is some hope. I am not sure Stunnel is the best way to do that and not even sure that Stunnel can do it but hope you can advice. Thanks for your help. LoLoVioLo

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Question (simple one I think)
by Reinier van der Gugten 09 Dec '09

09 Dec '09

Question: On the server, port 443 is already in use by a different service. However I require STunnel to communicate also on port 443. I thought, that perhaps I can obtain a second IP address and forward that trafic from the router to port 444 (or any other avail port). Then I can let Stunnel listen to port 444 and thus it would work. The firewall has to translate the 444 back to the 443 when transmitting data ofcourse. Is this the right way to go? Or ca I do this using one and the same IP (but then there would be 2 services listning to the same port right)? Thanks. Reinier

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Your opinion on sessiond
by Michal Trojnara 04 Dec '09

04 Dec '09

Dear Users, I'm eager to hear your comments, suggestions or issues regarding sessiond. Feel free to use the stunnel-users mailing list or the bug tracking system: https://stunnel.mirt.net/?page=bts Best regards, Mike

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stunnel-users December 2009