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Re: what's on port 28001?



On Fri, Jun 28, 2002 at 05:56:40AM -0500, Bud Rogers wrote:
> I got more than 27000 of these last night between 8:00 and 9:00, coming 
> from 1371 different source IP's, all to destination port 28001.  What's 
> so interesting about that port?
> 
> Jun 27 20:02:02 twocups kernel: Shorewall:net2all:DROP:IN=ppp0 OUT= 
> MAC= SRC=64.228.91.172 DST=207.3.88.229 LEN=36 TOS=0x00 PREC=0x00 
> TTL=116 ID=34319 PROTO=UDP SPT=2437 DPT=28001 LEN=16

There is a multiplayer networked video game that communicates on that
port.  I suspect that at some point somebody else had your IP address
and ran a dedicated server that is entered in some database somewhere.
The packets you saw were probably people running a client that tries to
connect to a list of known databases to get a list of running games and
stuff.

Here's some more info about the game.  
http://www.codebear.com/cato/faq.htm
I was able to find many pages mentioning port 28001 and UDP with a quick 
google search.

The traffic was probably not malicious at all.

noah

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