Re: HOME_NET, EXTERNAL_NET, ipvar unwanted triggered rules

["Al Lewis (allewi)" <allewi () cisco com>]

Hello,

        Do you have any example traffic?

Albert Lewis
ENGINEER.SOFTWARE ENGINEERING
SOURCEfire, Inc. now part of Cisco
Email: allewi () cisco com 








On 6/9/17, 12:32 PM, "David Smith" <DSmith () smhcems org> wrote:

> Members,
>
> ENV: Ubuntu 16.04, Snort V 2.9.9.0, Barnyard2 V 2.1.14, PulledPork 0.7.3, BASE 1.4.5
>
>
> Snort rules, pulled in from PulledPork are being triggered from addresses within the defined HOME_NET as if they are 
> part of the EXTERNAL_NET, which is causing unwanted alerts.
>
> Snort.conf:
> ipvar HOME_NET [192.168.1.0/24,192.168.3.0/24]
> ipvar EXTERNAL_NET !$HOME_NET
>
> Rule example:
> alert tcp $EXTERNAL_NET any -> $HOME_NET 53.........
>
> Can't find anything in docs or web that has solved this issue for me.    Thoughts or ideas?
>
> Thanks!
>
> Dave Smith
>
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