RE: Port 2848

["Mahoney, Paul" <paul () fiberstarr com>]

Hi all,

I don't want to jump the gun and make this something its not, but this
posting bears very similar resemblance to an issue I was working on with
a client.

At approximately 13 minute intervals my client was seeing repeat traffic
through his network to very similar addresses from a handful of clients.
This was so bad it was choking his internet connection.

After some analysis of log files we had some machines to work on, we
discovered on each machine there was an illegally downloaded copy of
Norton anti virus, that continually (13 min approx intervals) was
downloading update files and not applying them, therefore, it would
continually repeat the process throughout the day.

Could this be a ddos?

Paul Mahoney


-----Original Message-----
From: Nathan [mailto:nathan.grandbois () cerdant com] 
Sent: Wednesday, December 18, 2002 8:30 AM
To: Security Focus (E-mail)
Subject: Port 2848

I don't know if this is the proper forum for this question so if it's
not
I'm sorry.

Appended is an excerpt of a log off of one of our firewalls. I think
that
this guy is using AIM but I can't determine. The only thing I could come
up
with for port 2847 is the AIMPP-Port Req (from all the port lists) and
nothing for 2848. 192.168.100.2 tries to connect to 206.204.212.226 on
port
2847 then 2
minutes later to 206.204.52.98 on port 2848 then again to
206.204.212.226 13
minutes later and the pattern repeats. Do you think this has anything to
do
with AIM or could it be some other software application that uses these
ports and the port listing for 2847 is not entirely correct?
12/16/2002 00:01:03.656 - TCP connection dropped - Source:192.168.100.2,
1333, LAN - Destination:206.204.52.98, 2848, WAN
12/16/2002 00:14:08.256 - TCP connection dropped - Source:192.168.100.2,
1741, LAN - Destination:206.204.212.226, 2847, WAN
12/16/2002 00:16:04.848 - TCP connection dropped - Source:192.168.100.2,
1796, LAN - Destination:206.204.52.98, 2848, WAN
12/16/2002 00:29:09.752 - TCP connection dropped - Source:192.168.100.2,
2204, LAN - Destination:206.204.212.226, 2847, WAN
12/16/2002 00:31:06.096 - TCP connection dropped - Source:192.168.100.2,
2257, LAN - Destination:206.204.52.98, 2848, WAN
12/16/2002 00:44:10.928 - TCP connection dropped - Source:192.168.100.2,
2690, LAN - Destination:206.204.212.226, 2847, WAN
12/16/2002 00:46:07.320 - TCP connection dropped - Source:192.168.100.2,
2745, LAN - Destination:206.204.52.98, 2848, WAN
12/16/2002 00:59:12.192 - TCP connection dropped - Source:192.168.100.2,
3154, LAN - Destination:206.204.52.98, 2847, WAN
12/16/2002 01:01:08.368 - TCP connection dropped - Source:192.168.100.2,
3209, LAN - Destination:206.204.52.98, 2848, WAN
12/16/2002 01:14:13.464 - TCP connection dropped - Source:192.168.100.2,
3615, LAN - Destination:206.204.212.226, 2847, WAN
12/16/2002 01:16:09.384 - TCP connection dropped - Source:192.168.100.2,
3672, LAN - Destination:206.204.212.226, 2848, WAN
12/16/2002 01:29:14.656 - TCP connection dropped - Source:192.168.100.2,
4069, LAN - Destination:206.204.52.98, 2847, WAN
12/16/2002 01:31:10.544 - TCP connection dropped - Source:192.168.100.2,
4131, LAN - Destination:206.204.212.226, 2848, WAN
12/16/2002 01:44:15.768 - TCP connection dropped - Source:192.168.100.2,
4558, LAN - Destination:206.204.52.98, 2847, WAN
12/16/2002 01:46:11.768 - TCP connection dropped - Source:192.168.100.2,
4623, LAN - Destination:206.204.212.226, 2848, WAN
12/16/2002 01:59:17.048 - TCP connection dropped - Source:192.168.100.2,
1052, LAN - Destination:206.204.212.226, 2847, WAN
12/16/2002 02:01:12.896 - TCP connection dropped - Source:192.168.100.2,
1124, LAN - Destination:206.204.52.98, 2848, WAN
12/16/2002 02:14:18.224 - TCP connection dropped - Source:192.168.100.2,
1529, LAN - Destination:206.204.212.226, 2847, WAN
12/16/2002 02:16:14.128 - TCP connection dropped - Source:192.168.100.2,
1589, LAN - Destination:206.204.52.98, 2848, WAN
12/16/2002 02:29:20.928 - TCP connection dropped - Source:192.168.100.2,
1996, LAN - Destination:206.204.52.98, 2847, WAN
12/16/2002 02:31:15.624 - TCP connection dropped - Source:192.168.100.2,
2046, LAN - Destination:206.204.212.226, 2848, WAN
12/16/2002 02:44:22.224 - TCP connection dropped - Source:192.168.100.2,
2475, LAN - Destination:206.204.212.226, 2847, WAN
12/16/2002 02:46:16.720 - TCP connection dropped - Source:192.168.100.2,
2529, LAN - Destination:206.204.212.226, 2848, WAN
12/16/2002 02:59:23.576 - TCP connection dropped - Source:192.168.100.2,
2932, LAN - Destination:206.204.52.98, 2847, WAN
12/16/2002 03:01:17.864 - TCP connection dropped - Source:192.168.100.2,
2992, LAN - Destination:206.204.52.98, 2848, WAN
12/16/2002 03:14:24.736 - TCP connection dropped - Source:192.168.100.2,
3400, LAN - Destination:206.204.212.226, 2847, WAN
12/16/2002 03:16:19.208 - TCP connection dropped - Source:192.168.100.2,
3463, LAN - Destination:206.204.212.226, 2848, WAN
12/16/2002 03:29:26.256 - TCP connection dropped - Source:192.168.100.2,
3862, LAN - Destination:206.204.212.226, 2847, WAN

Nathan Grandbois
Cerdant, Inc.
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