This alert implies that the TCP offset field contains a value that is
less than the size of a minimum TCP header which is 20 bytes. The TCP
offset field should contain a value that represents the number of 4 byte
words that make up a TCP header, so 5 * 4 = 20 - the minimum TCP header
length. This is most likely something you want to investigate.
Todd
The New York NOC Inc. wrote:
Hi,
I keep gettings tons of these alerts from varying ip addresses to one
destination ip.
(snort_decoder) WARNING: TCP Data Offset is less than 5!
How do I stop these alerts?
Thanks
AJ
===========================
The New York NOC Inc.
Dedicated Servers / VPS / Colocation
www.thenynoc.com <http://www.thenynoc.com>
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