variable problem

[Brian Hughes <brian.hughes () ptk org>]

Hi,

        First I would like to say thank you in advance for any replies. 

	I'm having a problem with the EXTERNAL_NET variable.  We have two networks 
10.5 and 10.6  Right now the IDS machine is listening for all traffic 
coming into the 10.6 network.  I'm trying to set things up so that Snort 
will only alert for traffic coming into 10.6 from outside 10.6 and 
10.5.  Here is how I have my snort.conf variables defined.

        HOME_NET 10.6.0.0/24
	EXTERNAL_NET [!10.6.0.0/24,!10.5.0.0/24] (I also tried setting it to 
![10.6.0.0/24,10.5.0.0/24] but it didn't work either).

	From looking through the archives I was thinking this would work, but it 
is still showing alerts being triggered by machines in the 10.6 network 
with destinations of the 10.5 network.

        The only signature it is doing this for is the spp_portscan2 alert.

        Any help would be greatly appreciated.

Brian Hughes.
 



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