Re: Cisco IOS Shellcode - McAfee IPS Protection

On Aug 8, 2005, at 1:22 PM, Ron Gula wrote:

> I think most of them are relying on existing technology. For example,
> a quick check of snort.org and bleedingsnort.org didn't have any new
> cisco-specific rules, yet there are signatures to detect various Cisco
> attacks already.

We stopped looking for shellcode with Snort years ago, we focus our  
rule development efforts on detection of people exercising the  
protocols improperly instead of looking for specific signatures  
whenever possible.  Our existing Cisco rules most likely need to have  
the messages updated from "DoS"  to "exploit", that's about it.   
Playing the shellcode detection game is a dead end unless that's all  
you've got.

     -Marty

--
Martin Roesch - Founder/CTO, Sourcefire Inc. - +1-410-290-1616
Sourcefire - Network Defense for the Real World - http:// 
www.sourcefire.com
Snort: Open Source Intrusion Detection and Prevention - http:// 
www.snort.org




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