Snort mailing list archives

Re: Snort vulnerability scan detection


From: Teo En Ming <teo.en.ming () gmail com>
Date: Mon, 14 Apr 2014 23:37:26 +0800

Dear Eric G,

My snort sensor is behind a NAT router with Stateful Packet Inspection
(SPI) firewall. My HOME_NET is 192.168.1.0/24. I usually run nmap and
nessus scans from the internal network against my PUBLIC IP address.

Regards,

Teo En Ming


On Mon, Apr 14, 2014 at 11:26 PM, Eric G <eric () nixwizard net> wrote:

On Apr 14, 2014 11:19 AM, "Teo En Ming" <teo.en.ming () gmail com> wrote:

Hi,

I ran both nessus and nmap scans. Snort is unable to detect these scans.


Teo I believe you really need to stop assuming Snort is the problem...
it's very, very likely configuration issues or some issue with the way
you're feeding data to Snort that is the problem.

Are you only feeding data to Snort on the inside of your network? Is there
a firewall blocking traffic on the outside, and that's why Snort doesn't
see the traffic?

If you are feeding outside traffic to Snort, do you have HOME_NET defined
correctly, meaning do you have your outside IP addresses included in
HOME_NET?

--
Eric
http://www.linkedin.com/in/ericgearhart

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