[Snort-users] Monitoring incoming or outgoing traffic

Anshuman Anil Deshmukh anshuman at ...16510...
Fri Jan 9 06:40:34 EST 2015


Hi Jeremy,

I understood the tap/span part. Kindly confirm if the syntax for BPF for allowing  only one direction of traffic would be in this format?

!(dst net 10.10.0.0/16) &&

OR

!(src net 192.168.0.0/16) &&


Regards,
Anshuman

From: Jeremy Hoel [mailto:jthoel at ...11827...]
Sent: Friday, January 9, 2015 12:01 PM
To: Anshuman Anil Deshmukh
Cc: snort-users at lists.sourceforge.net
Subject: Re: [Snort-users] Monitoring incoming or outgoing traffic

From snort itself you could use some for of BPF filter, or configure the tap/span to only send one direction of traffic, if possible.   To snort, it's all inbound in IDS mode.

On Thu, Jan 8, 2015 at 11:18 PM, Anshuman Anil Deshmukh <anshuman at ...16510...<mailto:anshuman at ...16510...>> wrote:
Hi,

Is there a way in Snort to just monitor the incoming or outgoing traffic in IDS mode? Do we need to specify this under threshold.conf or somewhere else? We are on version Snort 2.9.7.0


Regards,
Anshuman

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