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Date:      Thu, 2 Aug 2001 15:58:38 -0500 
From:      "Schlosser, Matt D." <mschlosser@eschelon.com>
To:        'Vlad' <tmd@tmd.df.ru>, "'freebsd-security@freebsd.org'" <freebsd-security@freebsd.org>
Subject:   RE: weird packets.. anyone?
Message-ID:  <2FA3BA0C7551724CA6DDF4E345360505049F1E@walleye.corp.fishnet.com>

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Looks like DNS is being blocked.  DNS uses 53 for both UDP and TCP packets.

-----Original Message-----
From: owner-freebsd-security@FreeBSD.ORG
[mailto:owner-freebsd-security@FreeBSD.ORG]On Behalf Of Vlad
Sent: Thursday, August 02, 2001 3:41 PM
To: freebsd-security@freebsd.org
Subject: weird packets.. anyone?


I've got this today in my logs:

Aug  2 12:51:32 tmd ipmon[35772]: 12:51:31.270526 ed0 @0:5 b 0.0.0.0,68 ->
255.255.255.255,67 PR udp len 20 328  IN 
Aug  2 12:57:54 tmd ipmon[35772]: 12:52:34.606148 3x ed0 @0:5 b
169.254.179.233,137 -> 169.254.255.255,137 PR udp len 
20 96 

and connection to 138.

each of connection was followed by the following entries in the log:

Aug  2 13:33:39 tmd /kernel: Connection attempt to UDP 24.43.202.10:1931
from 24.2.9.35:53
Aug  2 13:33:39 tmd /kernel: Connection attempt to UDP 24.43.202.10:1934
from 24.2.9.33:53
Aug  2 13:33:39 tmd /kernel: Connection attempt to UDP 24.43.202.10:1940
from 24.2.9.33:53
Aug  2 13:33:52 tmd /kernel: Connection attempt to UDP 24.43.202.10:1939
from 24.2.9.35:53
Aug  2 13:33:52 tmd /kernel: Connection attempt to UDP 24.43.202.10:1942
from 24.2.9.33:53
Aug  2 13:33:52 tmd /kernel: Connection attempt to UDP 24.43.202.10:1941
from 24.2.9.35:53
Aug  2 13:34:06 tmd /kernel: Connection attempt to UDP 24.43.202.10:1943
from 24.2.9.35:53
Aug  2 13:34:09 tmd /kernel: Connection attempt to UDP 24.43.202.10:1944
from 24.2.9.33:53
Aug  2 13:34:39 tmd /kernel: Connection attempt to UDP 24.43.202.10:1945
from 24.2.9.35:53
Aug  2 13:34:52 tmd /kernel: Connection attempt to UDP 24.43.202.10:1950
from 24.2.9.33:53
Aug  2 13:35:00 tmd /kernel: Connection attempt to UDP 24.43.202.10:1952
from 24.2.9.33:53
Aug  2 13:35:00 tmd /kernel: Connection attempt to UDP 24.43.202.10:1951
from 24.2.9.35:53
Aug  2 13:35:09 tmd /kernel: Connection attempt to UDP 24.43.202.10:1954
from 24.2.9.33:53
Aug  2 13:35:39 tmd /kernel: Connection attempt to UDP 24.43.202.10:1953
from 24.2.9.35:53
Aug  2 13:35:39 tmd /kernel: Connection attempt to UDP 24.43.202.10:1955
from 24.2.9.35:53
Aug  2 13:35:39 tmd /kernel: Connection attempt to UDP 24.43.202.10:1956
from 24.2.9.33:53

and then repeated..

24.32.202.10 - my ip
24.2.9.33 - primary DNSof my ISP

does anyone have any idea what this is?

please answer to e-mail if possible.. 

thanks!

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