[Snort-users] RE: Rule content question.

larosa, vjay larosa_vjay at ...3331...
Tue Aug 20 12:36:15 EDT 2002


I guess from the lack of replies there is no way for me to accomplish this.

vjl


>  -----Original Message-----
> From: 	larosa, vjay  
> Sent:	Friday, August 16, 2002 12:01 PM
> To:	'snort-users at lists.sourceforge.net'
> Subject:	Rule content question.
> 
> Hello,
> 
> I have a rule content question for the list,
> 
> I seem to have a lot of happy packet generators on my network. No matter
> what I tell these people they always
> think they can some how get by me. I am finally giving up, I want to
> change the following rule,
> 
> alert icmp $EXTERNAL_NET any -> $HOME_NET any (msg:"ICMP Large ICMP
> Packet"; 
> dsize: >800; reference:arachnids,246; classtype:bad-unknown; sid:499;
> rev:3;)
> 
> to ignore any ICMP packet that has a payload of all 00's. I am trying to
> figure out how I can mangle
> this rule to not trigger on these packets. These packets are all varying
> in size as well. Does anybody have 
> any good idea? Thanks!
> 
> vjl
> 
> 
> 
> V.Jay LaRosa                           EMC Corporation
> Information Security                  171 South Street
> (508)249-3355 office                  Hopkinton, MA 01748
> (508)498-5575 cell                     www.emc.com
> (888-799-9750 pager                  larosa_vjay at ...3331...
> (508)497-8082 fax
> 




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