new intrusion detection system

Devon H. O'Dell dodell at sitetronics.com
Tue Oct 19 14:55:03 PDT 2004


Brian Barto wrote:
> Very interesting stuff. Certainly worth more investigation.
> 
> Something occurred to me while I read your thesis. Though maybe it was 
> worth a mention. The TTL (time to live) could potentially cause the IDS 
> module to be easily beaten. An attack could begin and immediately go 
> into a sleep state with the intent to expire the TTL. Later resuming 
> with it's actions going unnoticed.
> 
> I hope to see more on this. I think it is a very creative and useful idea.
> 
> Thanks,
> Brian

This is certainly something that will need to be researched and tuned in 
practical environments. In many cases, it's not practical to wait for 
over a certain period of time to perform the combination of commands 
needed to exploit software due to network or file issues. But it is a 
very valid point.

--Devon


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