Although it gives no information for that port, I find this site quite handy:

http://www.portsdb.org/



> 
> From: Scott H <scottlhenderson@yahoo.com>
> Date: 2003/02/05 Wed PM 03:18:21 EST
> To: PLUG <plug-discuss@lists.plug.phoenix.az.us>
> Subject: TCP/IP ports
> 
> I'm trying to track down network traffic on our
> LAN.  I'm seeing very frequent use of upper-level
> ports I don't recognize, like 4081.  Does anyone
> know where you can go to get a comprehensive list
> of what ports are used by what
> systems/applications?  Thanks for any help...
> 
> Scott
> 
> 
> 
> 
> 
> .
> 
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