[Snort-users] Flexresp problems

This is a discussion on [Snort-users] Flexresp problems within the Snort forums, part of the System Security and Security Related category; I've installed with Flexresp and when I try to add react:block; to a rule I get the message ...


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Old 02-19-2008
Ward, Rob
 
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Default [Snort-users] Flexresp problems

I've installed with Flexresp and when I try to add react:block; to a rule I get the message below, any ideas please anyone?

FATAL ERROR: Warning: /etc/snort/rules/local.rules(1) => Unknown keyword ' react' in rule!

The rule syntax looks OK to me and I've used this before without a problem. I'm running snort 2.8.0.1 on Cent OS 5.

The rule looks like this:

alert tcp $HOME_NET any -> $EXTERNAL_NET 8888 (msg:"P2P napster login"; flow:to_server,established; content:"|00 02 00|"; depth:3; offset:1; classtype:policy-violation; sid:549; rev:8; react:block;)


Also with Flexresp in which file do you put your variables i.e:

# just stop the offender
var RESP_TCP resp:rst_snd;

I get the same error when I put this in snort.conf and replace react:block; with $RESP_TCP in my rules. I also get the same error with resp:rst_snd; in the rules.

Any help would be appreciated, thanks!

Rob Ward
Network Northwest Support
University of Liverpool
Computing Services Department

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