Re: Re: TCPReplay problem

[alphafreq () yahoo com]

I have done this before like the last reply but also used a capture tool (e.g., tcpdump or snort) and capture only the 
initial traffic coming from the attacker.  If using TCP, as the first response indicates (Bojan), the sequence numbers 
associated with the traffic coming back from the target will break the TCP session.  Tools like Blade Software "IDS 
Informer" are designed to do this as long as you get the development kit.  With that tool in particular it can 
translate the IP addresses for you from captured traffic so that they can be sent on the live wire.  I had used this 
tool for testing the IDS that my former company built.  However, I noticed rather unexpected signatures in some of 
their attack corpus that made me realize I should just wrap my own compiled attacks with a generator to ensure i know 
what traffic I am sending. 

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