- stunnel-users - stunnel.org

Using stunnel instead of SSL API
by Vladimir Stariradev 23 Dec '09

23 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

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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

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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 16 Dec '09

16 Dec '09

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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 4.29 released
by Michal Trojnara 02 Dec '09

02 Dec '09

The ChangeLog entry: Version 4.29, 2009.12.02, urgency: MEDIUM: * New feature sponsored by Searchtech Limited http://www.astraweb.com/ - sessiond, a high performance SSL session cache was built for stunnel. A new service-level "sessiond" option was added. sessiond is available for download on ftp://stunnel.mirt.net/stunnel/sessiond/ . stunnel clusters will be a lot faster, now! * Bugfixes - "execargs" defaults to the "exec" parameter (thx to Peter Pentchev). - Compilation fixes added for AIX and old versions of OpenSSL. - Missing "fips" option was added to the manual. SHA-1 value for stunnel-4.29.tar.gz: f93ac9054c62b1db0dcf44f668d323d82cc0f413 Home page: http://stunnel.mirt.net/ Download: ftp://stunnel.mirt.net/stunnel/ Best regards, Michal Trojnara

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Still having issues compiling Stunnel on aix 5.3. SOL_TCP not defined? Please help
by Geoff 01 Dec '09

01 Dec '09

I installed gcc and the latest version of openssl on my aix 5.3 server. I did the ./configure and all went well. When I did the make I recieved the following error. if gcc -DPACKAGE_NAME=\"stunnel\" -DPACKAGE_TARNAME=\"stunnel\" -DPACKAGE_VERSION=\"4.28\" -DPACKAGE_STRING=\"stunnel\ 4.28\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"stunnel\" -DVERSION=\"4.28\" -DHOST=\"powerpc-ibm-aix5.3.0.0\" -DCPU_POWERPC=1 -DVENDOR_IBM=1 -DOS_AIX5_3_0_0=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DSIZEOF_UNSIGNED_CHAR=1 -DSIZEOF_UNSIGNED_SHORT=2 -DSIZEOF_UNSIGNED_INT=4 -DSIZEOF_UNSIGNED_LONG=4 -DHAVE_DEV_PTS_AND_PTC=1 -DRANDOM_FILE=\"/dev/urandom\" -DHAVE_UCONTEXT_H=1 -DHAVE_PTHREAD_H=1 -DHAVE_SYS_SELECT_H=1 -DHAVE_POLL_H=1 -DHAVE_SYS_POLL_H=1 -DHAVE_SYS_IOCTL_H=1 -DHAVE_STROPTS_H=1 -DHAVE_GRP_H=1 -DHAVE_UNISTD_H=1 -DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_SOCKET_H=1 -DHAVE_STRUCT_MSGHDR_MSG_CONTROL=1 -DHAVE_MSGHDR_MSG_CONTROL=1 -DHAVE_LIBDL=1 -DHAVE_LIBZ=1 -DHAVE_LIBPTHREAD=1 -DUSE_PTHREAD=1 -DHAVE_SNPRINTF=1 -DHAVE_VSNPRINTF=1 -DHAVE_WAITPID=1 -DHAVE_WAIT4=1 -DHAVE_SETSID=1 -DHAVE_SETGROUPS=1 -DHAVE_CHROOT=1 -DHAVE_SYSCONF=1 -DHAVE_GETRLIMIT=1 -DHAVE_PTHREAD_SIGMASK=1 -DHAVE_LOCALTIME_R=1 -DHAVE_GETCONTEXT=1 -DHAVE_POLL=1 -DHAVE_ENDHOSTENT=1 -DHAVE_GETNAMEINFO=1 -DHAVE_GETADDRINFO=1 -DHAVE_OPENSSL=1 -Dssldir=\"/usr\" -DHAVE_OSSL_ENGINE_H=1 -DUSE_IPv6=1 -I. -I. -I/usr/kerberos/include -DLIBDIR='"/usr/local/lib/stunnel"' -DCONFDIR='"/usr/local/etc/stunnel"' -DPIDFILE='"/usr/local/var/run/stunnel/stunnel.pid"' -g -O2 -Wall -Wshadow -Wcast-align -Wpointer-arith -I/usr/include -MT options.o -MD -MP -MF ".deps/options. Tpo" -c -o options.o options.c; then mv -f ".deps/options.Tpo" ".deps/options.Po"; else rm -f ".deps/options.Tpo"; exit 1; fi options.c:1773: error: 'SOL_TCP' undeclared here (not in a function) make: 1254-004 The error code from the last command is 1. Stop. make: 1254-004 The error code from the last command is 1. The SOL_TCP option is not defined on AIX. I am hoping this can be applied to SOL_SOCKET which is defined. So... I changed the following lines in the options.c program #ifdef TCP_KEEPCNT /* {"TCP_KEEPCNT", SOL_TCP, TCP_KEEPCNT, TYPE_INT, DEF_VALS}, */ {"TCP_KEEPCNT", SOL_SOCKET, TCP_KEEPCNT, TYPE_INT, DEF_VALS}, #endif #ifdef TCP_KEEPIDLE /* {"TCP_KEEPIDLE", SOL_TCP, TCP_KEEPIDLE, TYPE_INT, DEF_VALS}, */ {"TCP_KEEPIDLE", SOL_SOCKET, TCP_KEEPIDLE, TYPE_INT, DEF_VALS}, #endif #ifdef TCP_KEEPINTVL /* {"TCP_KEEPINTVL", SOL_TCP, TCP_KEEPINTVL, TYPE_INT, DEF_VALS},*/ {"TCP_KEEPINTVL", SOL_SOCKET, TCP_KEEPINTVL, TYPE_INT, DEF_VALS}, I can compile the code without error at this point. So... my question is has anyone else made a similar change to get the code to compile on AIX 5.3? If not, can you please tell me what configuration options you used to make stunnel work. Thanks for any help you can provide. I am at my wits end here and pretty much my capability in compiling code. Thanks in advance, Geoff

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Upgrade From 4.27 to 4.28? Or Wait for Next Version?
by Jeff Salisbury 01 Dec '09

01 Dec '09

Greetings, I've noticed some problems with v4.28 (posted in this group). Is there any compelling reason to upgrade from 4.27 to 4.28? Or, should we wait for the problems in 4.28 to be fixed in a new version and then upgrade? Regards, Jeff

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