Re: New stream 4 messages in 2.0

[Chris Green <cmg () sourcefire com>]

Russell Fulton <r.fulton () auckland ac nz> writes:

> Hi All,
>       We have just upgraded to 2.0 and are seeing lots of alerts for these:
>
> (snort_decoder) WARNING: TCP Data Offset is less than 5!
> (snort_decoder): T/TCP Detected
>
> Just what triggers these alerts and is there any way to turn them off?
>
> BTW all the "TCP Data Offset is less than 5!" come from three Akamai
> boxes housed on our DMZ :(  Those things seem to bend all the rules to
> breaking point, sigh...

Mind sending me a packet dump to see what these things are doing? :)

> The "T/TCP Detected" all seem to be from incoming connections.

2.0.0:
config disable_ttcp_alerts

2.0.x also accepts

config disable_tcpopt_ttcp_alerts

-- 
Chris Green <cmg () sourcefire com>
Laugh and the world laughs with you, snore and you sleep alone.


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