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Firewall Wizards: RE: source port specific port scan (Rich Wilson)

RE: source port specific port scan (Rich Wilson)

From: <gary.smith_at_ScottishAmicable.co.uk>
Date: Mon, 15 Oct 2001 10:39:58 +0100

fscan http://www.foundstone.com
nmap http://www.insecure.org/nmap

amongst a whole host of others.

--Gary;

>Does anyone know of a port scanner that allows you to specify the source
port?
>I'm trying to test a filter that allows outbound only SMTP. My worry is
that
>it is not stateful, and that an attacker using a source port of 25 can
bypass
>the filter.

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