Snort mailing list archives

Re: Snort IPS - slow file transfer problem


From: wkitty42 () windstream net
Date: Wed, 15 Jun 2016 09:03:20 -0400

On 06/15/2016 07:59 AM, Anton Bezkrovny wrote:
Hello!

I have faced a problem of low speed of files copying during Snort realization in
the IPS mode.

The file is copied from one computer to another, communication between them is
provided through Snort bridge.

what are the specs of the snort bridge? CPU, RAM, NICs being the most 
important... what we're looking for is a bottleneck... maybe the CPU is in high 
usage during the file transfer or possibly you have a lot of swap being used... 
consumer-grade NICs generally rely on the CPU to do the heavy lifting of data 
moving whereas server-grade NICs do that heavy lifting on their own which leads 
to faster processing...

assuming your snort bridge is a *nix box, what does your resource consumption 
look like?

   free -m; echo; top -n 1 -b | head -n 5


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