Re: BPF problem

[waldo kitty <wkitty42 () windstream net>]

On 7/11/2014 1:34 PM, Mike Patterson wrote:
> Following up to myself: I’ve tried various permutations of my BPF filter to
> no avail. I tried Snort versions 2.9.5.3 (which is what’s on my old sensor),
> 2.9.6.0, and 2.9.6.1. Always, Snort says it’s reading my BPF filter, and
> always, it’s including alerts for IPs and networks that are in the filter.
>
> My current filter is of the form:
>
> not (net 1.2.3.4/8 or not net 10.0.0.0/24 or not 172.16.12.1)

this may not be related to your problem but i can't help seeing the double 
negatives in the above... are you wanting to include or exclude traffic to/from 
10.0.0.0/24 and 172.16.12.1?

if you want to exclude traffic from them, perhaps you mean to use

not (net 1.2.3.4/8 or net 10.0.0.0/24 or 172.16.12.1)

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