Firewall-fooling techniques

[Göran Sandahl <goran () gsandahl net>]

Hi. 

I'm looking for some basic information on "techniques" on "fooling" firewalls 
and IDSs. Like using fragmented packages to fool packet-filtering firewalls 
etc.. Any suggestions on such techniques, and perhaps some references to 
online litterature.. ?

Greatful for an reply!

Regards
Göran

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