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Date:      9 May 2001 13:18:53 -0700
From:      Michael Sharp <msharp@medmail.com>
To:        FreeBSD-security@FreeBSD.org
Subject:   Re: ipfw
Message-ID:  <20010509201853.6521.cpmta@c000.sfo.cp.net>

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But I need to block port 113, and allow 1 machine to get to port 113.
HAVING to add ipfw add allow ip from any to any gets process before I would allow my 1 machine to port 113, thus allowing every machine to port 113

On Wed, 09 May 2001, Ron Brogden wrote:

> 
> On Wednesday 09 May 2001 20:03, you wrote:
> > and still I cannot get rid of that pesky 65535 DENY everything rule that
> > wont let me do anything unless I add  " ipfw add allow ip from any to any "
> >   which allows everything despite ANY DENY chains.
> 
> Why can't you add the specific deny rules first if that is how you want 
> things to work.  Just give them a lower precedence than your blanket allow 
> rule:
> 
> ipfw add 40000 deny something from somewhere to somewhere_else
> ipfw add 50000 deny something from somewhere to somewhere_else
> ipfw add 60000 allow ip from any to any
> 
> That said, shouldn't you be allowing specific stuff and then denying by 
> default?
> 
> Cheers,
> 
> Ron
> 


   
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