[stunnel-users] limited number of ports

bwilkins26 . bwilkins at gmail.com
Tue Apr 9 14:17:54 CEST 2013

Below is a link to a tutorial I wrote on how to setup stunnel to run as two
services.. it's not really necessary anymore because stunnel can do this
natively but some people may still benefit from doing it this way.


On Sat, Apr 6, 2013 at 11:34 AM, Javier <meresponde2001-stn at yahoo.es> wrote:

> On Fri, 5 Apr 2013 18:28:43 -0400
> Brian Wilkins <bwilkins at gmail.com> wrote:
> > I simply have two entries in services. It requires editing the registry
> and
> > giving two different names to the service entries, for instance
> > stunnel-client and stunnel-server. You can call different config files
> too.
> >
> Hi,
> Ok, I've played a little with your explanation and SrvAny (link below) and
> I found that is not exactly as you tell, at least under Windows 2000.
> I didn't know this, but stunnel can run several instances just renaming the
> stunnel.exe executable, because what stunnel checks only is the PID name
> not whatever others applications check to check if it is already running.
> So
> just changing the executable name of every stunnel.exe copy is enough to
> have
> several intances running.
> About the services, it is not as you told (with my tests). I created two
> services,
> but if they call to the same executable the behavior is as expected:
> unable to
> run 2 or more instances. It only works if you link each service with a
> different
> named executable. Lets say we create service "stn1" and "stn2"; "stn1"
> should
> call to "stunnel1.exe" and "stn2" should call to "stunnel2.exe". Of
> course, each
> one can take each own .conf file.
> Anyway, it was interesting to find out this :-)
> Regards.
> Handy application from the NT Resource Kit:
> http://support.microsoft.com/kb/137890/en
> Download links, including for Windows 2003 server (microsoft website link):
> http://www.iopus.com/guides/srvany.htm
> Remember to pass an antivirus anyway.
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