Snort mailing list archives

Re: SSH between subnets


From: Cody Brugh <cbrugh () gmail com>
Date: Mon, 15 Sep 2014 14:56:58 -0400

Scratch that, I just placed a BPF in and its still having the same issue.
Any further advise?

!(src net 10.2.0.0/16 && dst net 10.20.1.0/24 && dst port 22)

/usr/local/bin/snort --pid-path=/var/run --daq afpacket -i eth2:eth3 -Q
--daq-var buffer_size_mb=2048MB -F /etc/snort/bpf.filter -c
/etc/snort/snort.conf

On Mon, Sep 15, 2014 at 2:32 PM, Cody Brugh <cbrugh () gmail com> wrote:

Joel,

Can you point in the right direction for BPF information/setup?  I have
never done anything with BPF and not sure what exactly it does.


On Mon, Sep 15, 2014 at 2:29 PM, Joel Esler (jesler) <jesler () cisco com>
wrote:

Try setting a BPF for ignoring the SSH port.


On Sep 15, 2014, at 11:13 AM, Cody Brugh <cbrugh () gmail com> wrote:

Hello,

I am trying to SSH/rsync files between two subnets (10.2.x.x/16 and
10.20.1.x/24) snort is running in-line on the 10.2.x.x subnet and not on
the other.  What I am seeing is my rsync goes really slow and if I login to
the snort box I see CPU at 90-100% pegged... if I stopped the rsync the CPU
goes back to normal.

I have the SSH pre-processor stuff disabled and still see this
behavior.  Does anyone happen to know what could be causing this?

Thanks,
Cody

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------------------------------------------------------------------------------
Want excitement?
Manually upgrade your production database.
When you want reliability, choose Perforce
Perforce version control. Predictably reliable.
http://pubads.g.doubleclick.net/gampad/clk?id=157508191&iu=/4140/ostg.clktrk
_______________________________________________
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