![IP=155.200.2.10,!$HOME_NET]
where
HOME_NET= [155.200.2.0/24,155.200.3.0/24]
will not work since variables are essentially substitutions. What you
end up with is
IP=![155.200.2.10,![155.200.2.0/24,155.200.3.0/24]]
( assuming the orig was a typo )
An inclusion with a subset negation will almost always evaluate to an
undesired result as well.
10.1.1.0/8,!10.1.2.3/32 will always be !10.1.2.3/32 for everything but
10.1.2.3 itself.
If you have a rule you want to exclude from alerting you should either
use a pass rule to cause that traffic to be ignored completely, a BPF to
ignore the select host completely, or a suppression to filter out the
alerts.
Paul Melson wrote:
What does the rule syntax for using one affirmative and on negative value
look like?
-----Original Message-----
Subject: Re: [Snort-users] Re: Snort-users digest, Vol 1 #5192 - 5 msgs
If you want to filter out one host, then you make the var:
var HOMENETFORRULE1234ONLY [x.x.x.x/32]
--On Thursday, July 14, 2005 02:51:13 +0800 Simon Yip
<simon388@netvigator.com> wrote:
That could be a solution while I hope to have something like
![IP=155.200.2.10,!$HOME_NET] I have tried my above expression in a
rule but it just give me a fatal error.
where HOME_NET= [155.200.2.0/24,155.200.3.0/24]
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