[cisco-voip] UDP port 3836

J. Oquendo sil at infiltrated.net
Tue Nov 14 16:00:49 EST 2006


Ed Leatherman wrote:
> Anyone know of a good reason why callmanager would want to talk to 
> another device on UDP/3836? I have 2 sub servers trying to talk to a 
> single IP address at that port.. no device is at that IP address 
> anymore although there could have been one in the past - PIX just 
> happened to be picking up the packets and logging them. trying to 
> figure out if its just a misconfiguration somewhere maybe with AC or 
> if its something I need to be more concerned with. Don't know of any 
> tools in windows that will let me see what process is originating it.

Hey Ed,

SANS shows an increase of activity to that port 
(http://isc.sans.org/port_details.php?port=3836) have you tried sniffing 
the line to see what callmanager is doing?

As for the tool you asked for:
http://www.microsoft.com/technet/sysinternals/Networking/TcpView.mspx

Wow... Just realized MS took over Sysinternals.com

-- 
====================================================
J. Oquendo
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x1383A743
sil . infiltrated @ net http://www.infiltrated.net 

The happiness of society is the end of government.
John Adams

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