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RE: port 12980/udp

Higher up ports like that are usually dynamically assigned for two-way
connections, for instance, when I run bitchX and connect to openprojects.net
#Debian, I get one or two connections back to my machine.  You can use
netstat to determine which program is currently listening on a given port.
When I connect to an IRC server the connection going out on that machine is
6667, but the returning connection, which is for data coming back I suppose,
is on a different high numbered port.  perhaps UDP?  Hope this helps.  Check
the netstat manpage


-----Original Message-----
From: Javier Fernández-Sanguino Peña [mailto:jfs@computer.org]
Sent: Monday, August 05, 2002 5:51 AM
To: Arne Schwabe
Cc: debian-security@lists.debian.org
Subject: Re: port 12980/udp

On Sat, Aug 03, 2002 at 11:00:36PM +0200, Arne Schwabe wrote:
> Hi,
> today i saw lot of connection attemps to port 12980 on my
> machine. Because that are many[1] and they came from different hosts i
> am wondering what is going on here.
> Arne
> [1]
> arne@r2d2/var/log$ grep "Aug  3" kern.log | grep 12980 | wc -l
>     628
	This questions are starting to become somewhat of a FAQ.
My answer is, if you do not know what port is related to an attack you
are receiving it might be worth checking:

- To see which ports are actively being probed/attack: 
http://isc.incidents.org/ or http://www.dshield.org/ 
(https://analyzer.securityfocus.com/ seems to have had this 
info previously but does not seem to make it public
anymore). More specifically: http://isc.incidents.org/top10.html

- To see what service might be associated to a given port check

	Unfortunately a search in any of these regarding 12980
didn't return a thing so you might want to report it to ISC.



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