Re: Portscan does not ignore my net

[Erek Adams <erek () snort org>]

On Mon, 17 Mar 2003, Smith, Aron wrote:

> I have an ignore rule for 10.28/16 and the -o option specified.
> Initially it worked, but after clearing out the database of old alerts,
> snort is ignoring my ignore rule again and I have thousands of portscan
> events that are actually legit traffic.

Ummm...  Pass rules only work with other rules.

If it's coming from portscan or portscan2, then it's a preprocessor.  It
can't be ignored from a pass rule.  You'll need to use a BPF filter.

        snort <whatever options> 'not net 10.28.0.0/16'

That should do it.

Cheers!

-----
Erek Adams

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


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