Security Incidents mailing list archives
Interesting Logs to port 8941
From: Ryan Yagatich <ryany () pantek com>
Date: Wed, 9 Oct 2002 08:33:19 -0400 (EDT)
Hi,
Today I've noticed some interesting activity on my dialup
connection, particularly that to port 8941 via TCP. Here is such example
data:
<LOG>
<TIME> Oct 7 10:57:45 </TIME>
<IN> ppp0 </IN>
<OUT> </OUT>
<MAC> </MAC>
<SRC> 130.156.129.254 </SRC>
<DST> 216.144.8.150 </DST>
<LEN> 48 </LEN>
<TOS> 0x00 </TOS>
<PREC> 0x00 </PREC>
<TTL> 108 </TTL>
<ID> 39816 </ID>
<FLAGS> DF SYN </FLAGS>
<PROTO> TCP </PROTO>
<SPT> 3446 </SPT>
<DPT> 8941 </DPT>
<WINDOW> 16384 </WINDOW>
<RES> 0x00 </RES>
<URGP> 0 </URGP>
</LOG>
Here's what I've found out:
1) There are 3 packets being sent (SYN + DF)
2) The intervals are always the same:
3 seconds between packets 1-2
6 seconds between packets 2-3
3) All have length of 48 (since just the SYN)
I really have no information about it other than what is listed above and
that the timeframe is as follows:
Start: 10.07.2002 @ 10:57:45 EST
End: 10.07.2002 @ 17:55:56 EST
There are 210 access attempts with 68 unique hosts
these 3 hosts only had 1 packet sent a piece:
66.7.139.165
62.30.142.89
172.153.168.26
the logs that were taken from such traffic can be found at the following
URL:
http://www.pantek.com/~ryany/log
they are the following:
rejected.log (42447 bytes)
-> all of the records of the attempted connections
tcpdump.out (216 bytes)
-> 3 packets from a particular connection that i was
able to trap
If anyone has either seen any of this before, or has a clue of what it is,
please let me know, especially since i don't have much to go by (haven't
setup netcat to listen on that port yet). All times are EST.
Thanks,
Ryan Yagatich <support () pantek com>
Pantek, Incorporated
(877) LINUX-FIX - (440) 519-1802
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Current thread:
- Interesting Logs to port 8941 Ryan Yagatich (Oct 09)
- <Possible follow-ups>
- Re: Interesting Logs to port 8941 Ryan Yagatich (Oct 30)
