Snort mailing list archives

Re: EXTERNAL_NET var acting strange


From: Florent <florent () arcimex com>
Date: Tue, 21 Aug 2001 16:06:11 +0200

The point is that in both of my configs, packets from 1.1.1.66 should not be
logged - correct?

You're wrong

1.1.1.66 makes !1.1.1.0/24 False
whereas
1.1.1.66 make !1.1.1.0/24 or !172.16.0.0/24 or !172.16.16.0/24 Right

That's the beauty of the complicated Negation.

I'll try to find what you want to do.
I've just left school but I hardly remember this uggly logical rules for negation.

Florent

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