stunnel-users June 2008

stunnel-users@stunnel.org

21 participants
23 discussions

Using Stunnel on Vista
by John Lallemand 18 Jun '08

18 Jun '08

We have a system that needs a TN3270 client and Stunnel to connect on XP. Currently, OnNet Host/Rumba is the most popular TN3270 client in use. But when we try these programs on Vista, the connection times out. 1) Is Stunnel Vista compatible? 2) If it is, does Stunnel need specific settings to work on Vista? Thank you! ------------------------------ John Lallemand Software Release Manager University of California, Santa Cruz

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Problem with multiple stunnel jobs
by Carter Browne 17 Jun '08

17 Jun '08

A couple of days ago, I upgrade from 4.15 to 4.23 on a Linux system running Redhat 8. At the same time I went from openssl 0.9.8g to 0.9.8h. No changes were made to the configuration file. After the change, rather than starting a single process, it starts 6 processes. The process number of the lowest number process is the one that is put into the /var/run/stunnel.pid file. When I try to stop stunnel, using /etc/init.d/stunnel stop, the lowest number process is kill, and the highest number process seems to be running continuously - although it is not a hard cpu loop, but it keeps on accumulating run time. The number of processes may not be a new phenomenon, but the inability to kill itself is. I normally restart the stunnel on a daily basis to keep the log files manageable, but with this new behavior, the /etc/init.d/strunnel restart command fails because the ports are still in use. Any ideas on how to fix this problem. Thanks, Carter -- Carter Browne CBCS cbrowne(a)cbcs-usa.com 781-721-2890

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Goldmine 8 & Advisormail SSL problems
by Stephen E. Rischall 17 Jun '08

17 Jun '08

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stunnel service problems...
by Jeremy Paje 10 Jun '08

10 Jun '08

Has anyone had any problems with the windows stunnel service not starting automatically? We install stunnel as a service (stunnel.exe -install) We've had it previously installed on 600+ machines with no problems, but recently (noticed on slower machines running XP) the stunnel service does not start...but it happens randomly only on slower machines. The following errors are in the event log... Timeout (30000 milliseconds) waiting for the stunnel service to connect. (Event ID ID 7009) AND The stunnel service failed to start due to the following error: The service did not respond to the start or control request in a timely fashion. (Event ID 7000) I've tried setting the service to restart if failed, and to delay 2 minutes before restart, etc with no luck. If you start the stunnel manually all is well, it just doesn't start on bootup. Any suggestions? Thanks JP

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Re: [stunnel-users] stunnel compatibility question
by Brian Hatch 09 Jun '08

09 Jun '08

Roughly around 2008-06-09 11:34 -0400, Patel Dippen-CDP054 kibitzed: > In this scenario, can Stunnel listen on the UDP port on the local No. Stunnel will not listen on UDP ports. Stunnel will not send UDP packets. Stunnel doesn't support UDP. -- Brian Hatch The problem is that you'd Systems and probably make something Security Engineer useful of my life that http://www.ifokr.org/bri/ I would never do. Every message PGP signed

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Fw: Re: stunnel compatibility question
by Jeffrey Buck 06 Jun '08

06 Jun '08

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Re: [stunnel-users] stunnel compatibility question
by Brian Hatch 05 Jun '08

05 Jun '08

At almost 2008-06-05 09:37 -0400, Patel Dippen-CDP054 cajoled: > I guess what I am stating is can Stunnel listen on a UDP port The answer to that question is 'no, it cannot.' -- Brian Hatch "I was looking at bringing Systems and up some new servers on Security Engineer imaginary hardware." http://www.ifokr.org/bri/ --Jason Every message PGP signed

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stunnel compatibility question
by Jeffrey Buck 04 Jun '08

04 Jun '08

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Re: [stunnel-users] stunnel compatibility question
by Brian Hatch 03 Jun '08

03 Jun '08

In the neigborhood of 2008-06-03 07:58 -0400, Patel Dippen-CDP054 argued: > Will Stunnel work for UDP data? Stunnel only accepts TCP connections. > We have traffic going into the Server on UDP and outbound from the Server on TCP. You'll want an actual VPN protocol to handle that then. Or consider using a better protocol - what you describe makes the firewalls cry. > My understanding is that OpenSSL implemented the DTLS protocol (TFC > 4347: to support UDP data) in version 0.9.8 (OpenSSL: a free and popular > implementation of TLS added support for DTLS with version 0.9.8.) Not supported in Stunnel currently. -- Brian Hatch Always yield to temptation, Systems and because it may not pass Security Engineer your way again. http://www.ifokr.org/bri/ Every message PGP signed

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Is anyone using Stunnel for tunnelling Voip?
by Errol Samuels 03 Jun '08

03 Jun '08

Hello All, I am currently researching a solution for tunnelling VoIP traffic since VoIP is blocked in the country concerned. It appears that the ISP is targeting OpenVPN and OpenSwan and blocking them so I want to try something different. My solution based on OpenVPN worked great until it got blocked by the ISP about a week ago. It was using an OpenVPN server hosted in a US Datacenter and the VPN clients were simply routers with third party Linux firmware with the OpenVPN client embedded in the firmware. I am also investigating the possibility of tunnelling OpenVPN through SSH but I have to watch my IP overheads here because the ISP watches the upload bandwidth as well! Has anyone attempted or had any success using stunnel for a similar scenario as I have mentioned? Thanks in Advance Regards, Errol

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stunnel-users June 2008