[Snort-users] Fine tuning Snort

ScottO skippylou at ...11827...
Fri Oct 8 08:31:57 EDT 2010


James,

You can specify cidr notation for address blocks in threshold.conf,
something like:

suppress gen_id 1, sig_id 11111, track by_src, ip 10.1.2.0/24

Hope that helps,

scott

On Fri, Oct 8, 2010 at 8:24 AM, James Lay <jlay at ...13475...> wrote:

> Thanks Waldo,
>
> It's been quite interesting...I have at least four rules that look for
> executables...and as I look at the threshold file I can only threshold
> against one IP at a time...meaning I've got a lot of work to do as I have
> to add pretty much most of google and windowsupdate.com ;)  Even thought
> I'm tempted to simply start snort to not monitor those netblocks, eh...I'd
> rather do the right thing.
>
> Thanks again for the help.
>
> James
>
>
> On 10/7/10 10:23 PM, "waldo kitty" <wkitty42 at ...14940...> wrote:
>
> >On 10/7/2010 14:02, James Lay wrote:
> >> Kevin and Waldo, you gents are treasuresŠI will get to work and report
> >>my
> >> resultsŠthank you much!
> >
> >something else to thing about concerning rules that you would just
> >totally
> >suppress in threshold.conf... if they are completely suppressed then you
> >might
> >as well comment them out of the rules set so they do not consume any
> >memory and
> >snort won't waste any time loading them just to be ignoring them... but i
> >guess
> >this also depends on your tools and management systems... some may use
> >only
> >threshold to "disable" rules where others may actually comment them in
> >the rules
> >sets files... personally, i think the threshold file is best to suppress
> >certain
> >rules for certain IPs... total suppression is the same as disabled so...
> >;)
> >
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