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firewall-wizards logo Firewall Wizards mailing list archives

Re: source port specific port scan
From: Barney Wolff <barney () databus com>
Date: Sun, 14 Oct 2001 12:38:29 -0400
nmap, among others.  It would be the odd scanner that did not allow this.
www.insecure.org, if your OS does not include it.  (FreeBSD does.)
Barney Wolff

On Fri, Oct 12, 2001 at 02:33:39PM -0700, Rich Wilson wrote:

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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