Help with identifying a kind of attack.
Adam D. McKenna
adam at flounder.net
Tue Dec 8 23:06:08 UTC 1998
tcp and udp are transport layer protocols. If someone is sending raw IP
packets that aren't using a particular transport protocol, maybe they could
get through (?)
From: Thom Youngblood <thom at cais.net>
To: North America Network Operators Group <nanog at merit.edu>
Date: Tuesday, December 08, 1998 5:55 PM
Subject: Help with identifying a kind of attack.
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:I've been tracking an attack all day long, and have been frustrated
:trying to figure out both what was being attacked, and how. Finally,
:I realized it was *not* ICMP, UDP, or TCP.
:#sh access-lists 151
:Extended IP access list 151
: permit icmp any 220.127.116.11 0.255.255.255 (1023 matches)
: permit udp any 18.104.22.168 0.255.255.255 (4347 matches)
: permit tcp any 22.214.171.124 0.255.255.255 (86444 matches)
: deny ip any 126.96.36.199 0.255.255.255 (5547308 matches)
: permit ip any any (4450563 matches)
:In the above, notice the disparity? So, my question is...
:What the hell kind of packet is it if it's not ICMP, UDP, or TCP?
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