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Date: Wed, 19 Jan 2005 10:01:31 -0800
From: Erick Mechler <emechler@techometer.net>
To: "Sherman, Michael (GE Energy)" <michael.sherman@og.ge.com>
Message-ID: <20050119180131.GL19851@techometer.net>
References: <6BBE5C5603D0D611A06F0002A5D6556405FAA185@nyschx22psge.sch.ge.com>
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cc: FreeBSD-security@freebsd.org
Subject: Re: ipf question
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:: pass in quick on xl0 proto tcp/udp from any to any port 137 <> 139 keep
:: state

This line allows in all tcp and udp ports less than 137 and greater than 
139, which is exactly what you don't want :)  If you want to allow all 
ports 137-139 inclusive, you need to change it to

  ... port 136 >< 140 keep state

The < and > operators are not inclusive.

Cheers - Erick