Re: Event Suppression between specific Source and Destination

[Jeremy Hoel <jthoel () gmail com>]

That's a good idea too.  I hadn't thought of using bpf for that reason.
Plus less rules.. nice.
On Dec 15, 2012 10:10 AM, "Tony Robinson" <deusexmachina667 () gmail com>
wrote:

> If you're good with BPF syntax, snort accepts BPF filters, if you have
> enough key things to flag on, you can the BPF to make snort to ignore
> traffic meeting the characteristics causing your alert to trigger between
> these two hosts.
>
> It's not a pretty alternative, but its an alternative nonetheless.
>
> On Fri, Dec 14, 2012 at 10:06 PM, Jeremy Hoel <jthoel () gmail com> wrote:
>
> > You could also suppress an alert between two hosts by creating a pass
> > rule.
> >
> > Also, most rules (that I can think of based on our alerts) are
> > unidirectional. So if I know some severs always get rap traffic I suppress
> > those alerts with the src or dst depending on the rule.
> >  On Dec 14, 2012 7:41 PM, "waldo kitty" <wkitty42 () windstream net> wrote:
> >
> > > On 12/14/2012 10:44, Guido Hungerbuehler wrote:
> > > > I only agree on parts. Because if you would like to create a pass rule
> > > > for one specific rule and the two affected hosts, this would mean that
> > > I
> > > > basically have to copy the rule that triggers the event and replace
> > > > 'alert' with 'pass' and adjust the source and destination.
> > > >
> > > > But if the signature gets a new revision, the pass-rule does not get
> > > > updated. And I would have to check for changes in the rules manually.
> > >
> > > welcome to IDS Management 101 ;)
> > >
> > > but seriously, i see what you are saying but there is no other method
> > > available
> > > at this time for the way you choose to operate :?
> > >
> > >
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