RE: Same source/dest

["Brei, Matt" <mbrei () medclaiminc com>]

That's exactly what I did.  I'll refer you to my first post seen below.

  pass ip 10.13.110.254 53 -> 10.13.110.254 1026 (msg:"BAD TRAFFIC 
> same SRC/DST"; sameip; reference:cve,CVE-1999-0016; 
> reference:url,www.cert.org/advisories/CA-1997-28.html;
> classtype:bad-unknown; sid:527; rev:3;)
>
> pass ip 10.13.110.254 1026 -> 10.13.110.254 53 (msg:"BAD TRAFFIC same 
> SRC/DST"; sameip; reference:cve,CVE-1999-0016; 
> reference:url,www.cert.org/advisories/CA-1997-28.html;
> classtype:bad-unknown; sid:527; rev:3;)

-----Original Message-----
From: Erek Adams [mailto:erek () snort org] 
Sent: Wednesday, April 02, 2003 10:54 AM
To: james
Cc: snort-users
Subject: Re: [Snort-users] Same source/dest

On Tue, 1 Apr 2003, james wrote:

> If it is just one src/dst pair that is alerting on
> legit traffic, just modify the rule to exclude
> these IP's. In this case maybe set up a variable
> that excludes the IP's; or perhaps use a "!" ie,
>
> alert ip any any -> !10.1.2.3/32 25

No...  Don't modify the rule, because if you ever update your rules your
changes could be 'lost'.  Just write a pass rule instead.

        pass ip 10.1.2.3/32 any -> 10.1.2.3.4/32 25

And start snort with the -o parameter.

There is another method to ignore traffic [0] that may work better for
you.  Try both and see which one works better.

Cheers!

-----
Erek Adams

   "When things get weird, the weird turn pro."   H.S. Thompson


[0]     http://www.theadamsfamily.net/~erek/snort/ignore.txt


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