[Snort-users] HOME_NET, EXTERNAL_NET, ipvar unwanted triggered rules

Al Lewis (allewi) allewi at ...589...
Fri Jun 9 12:39:20 EDT 2017


Hello,

	Do you have any example traffic?

Albert Lewis
ENGINEER.SOFTWARE ENGINEERING
SOURCEfire, Inc. now part of Cisco
Email: allewi at ...589... 








On 6/9/17, 12:32 PM, "David Smith" <DSmith at ...17880...> 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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