From: Shenk, Jerry A (jshenk@decommunications.com)
Date: Tue Nov 28 2006 - 11:58:45 EST
That's actually a pretty good way. Set up a sniffer on the outside and
run nmap on the inside. One the sniffer, limit the sniffing to the host
that you are portscanning. I just did that yesterday. My dump file had
ONLY the traffic that the firewall was supposed to be allowing
through...amazing...somebody got it right;)
Here's one possible set of command-line arguments for what you want.
This is just tcp but you get the idea.
Outside:
tcpdump -i eth1 host 200.200.200.200 -w firewall_test.dump
You can read this file with: tcpdump -r firewall_test.dump | less
Inside:
nmap -sS 200.200.200.200 -p 1-65535
-----Original Message-----
From: listbounce@securityfocus.com [mailto:listbounce@securityfocus.com]
On Behalf Of errorcode408
Sent: Tuesday, November 28, 2006 6:24 AM
To: pen-test@securityfocus.com
Subject: Outgoing Port Check
Hi List,
I want to perform a check for allowed ports for outgoing Connections,
TCP and UDP as well, inside a filtered Company Network.
I thought of using nmap full port range, full connect Method against an
Server in a DMZ all Ports opened...
I am sure there are better ways, thats why im asking.
What do you think?
Are there tools for discovering Local Networks and its restrictions?
Regards,
Errorcode408
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