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Re: Why wdm opens a TCP port?



Petteri Heinonen wrote:
> 
> "Eric G. Miller" wrote:
> >
> > On Fri, May 17, 2002 at 08:54:04AM +0300, Petteri Heinonen wrote:
> >
> > > Yes, it's not the _X_ which keeps open the port, but the _wdm_. But the
> > > port indeed changed every time I restarted the wdm. I just restarted it
> > > couple of times, and the port numbers were 1083, 1084, 1085, etc. Very
> > > odd...
> >
> > It's not that odd really.  What address range is reported?  I'm going to
> > guess it's only listening on the local loopback.  Also, try telnetting
> > to the address:port.  Does it hang and time out?  Do you get connection
> > refused?  It would seem WDM sets up a TCP port to communicate between a
> > parent and child (more than one WDM process running?) and therefore
> > doesn't really care what port is used (lets the OS decide).
> >
> > --
> > Eric G. Miller <egm2@jps.net>
> 
> Netstat reports that foreign address is *:*, and I indeed
> _can_ connect to it with telnet, altough if I send anything to
> it with the telnet, the connection gets closed. Further, there
> is only one wdm process running. Maybe I'll just trust my
> iptables :) But anyway it would be nice to know what is the
> purpose of this kind of behaviour, and how can it be turned
> off.
> 
And one more thing which might help, at least the package
maintainer who was here some time ago: I'm using unstable
packages, and the version of the wdm is 1.20-15.

-- 
Petteri Heinonen                addr:   Varvikonkatu 1 C 19
phone:  +358 50 3363286                 33820 Tampere FIN
email:	heinonep@cs.tut.fi


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