RE: What am I seeing?

[Rob Keown <Keown () MACDIRECT COM>]

Fraggle is like a smurf, a packet-amplification attack. Are you doing any
ingress filtering...

http://www.cert.org/archive/pdf/DoS_trends.pdf

-----Original Message-----
From: jkruser [mailto:jkruser () adelphia net]
Sent: Tuesday, October 23, 2001 11:08 AM
To: incidents () securityfocus com
Cc: focus-ids () securityfocus com; vuln-dev () securityfocus com
Subject: What am I seeing?


Sorry about the crosspost but I am really in a pickle. I know this is a DoS,
but how is it being done? The origination points are all over my C-net but I
cannot believe all of these hosts are compromised. Any idea's on how to
stop/track this?

59, 2001-10-23 02:57:25, 2002001, SNMP Corrupt, MY.C.BLOCK.175, , 0.0.0.0, ,
, 1
79, 2001-10-23 02:57:31, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.177, , 0.0.0.0, , dstport=7&srcport=21497, 1
79, 2001-10-23 02:57:31, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.233, , 0.0.0.0, , dstport=17&srcport=549, 1
79, 2001-10-23 02:57:31, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.58, , 0.0.0.0, , dstport=19&srcport=17541, 1
59, 2001-10-23 02:58:10, 2002001, SNMP Corrupt, MY.C.BLOCK.200, , 0.0.0.0, ,
, 1
79, 2001-10-23 02:58:12, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.212, , 0.0.0.0, , dstport=7&srcport=36679, 1
79, 2001-10-23 02:58:12, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.92, , 0.0.0.0, , dstport=17&srcport=50187, 1
59, 2001-10-23 02:58:19, 2002001, SNMP Corrupt, MY.C.BLOCK.72, , 0.0.0.0, ,
, 1
79, 2001-10-23 02:58:23, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.65, , 0.0.0.0, , dstport=7&srcport=63300, 1
79, 2001-10-23 02:58:23, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.197, , 0.0.0.0, , dstport=17&srcport=38775, 1
79, 2001-10-23 02:58:23, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.127, , 0.0.0.0, , dstport=19&srcport=54070, 1
59, 2001-10-23 02:58:25, 2002001, SNMP Corrupt, MY.C.BLOCK.125, , 0.0.0.0, ,
, 1
59, 2001-10-23 02:59:27, 2002001, SNMP Corrupt, MY.C.BLOCK.109, , 0.0.0.0, ,
, 1
79, 2001-10-23 02:59:29, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.117, , 0.0.0.0, , dstport=7&srcport=13929, 1
79, 2001-10-23 02:59:29, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.26, , 0.0.0.0, , dstport=19&srcport=22847|47998, 2
79, 2001-10-23 02:59:36, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.48, , 0.0.0.0, , dstport=7&srcport=35113, 1
59, 2001-10-23 02:59:55, 2002001, SNMP Corrupt, MY.C.BLOCK.224, , 0.0.0.0, ,
, 1
79, 2001-10-23 03:00:07, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.226, , 0.0.0.0, , dstport=7&srcport=30975, 1
79, 2001-10-23 03:00:07, 2000205, Possible Fraggle attack initiated,
MY.C.BLOCK.36, , 0.0.0.0, , dstport=17&srcport=17726, 1


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