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Date:      Wed, 25 Jan 2006 08:51:54 -0500
From:      Chuck Swiger <cswiger@mac.com>
To:        Mark Frasa <mark@frasa.net>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: IPFW / NFSD
Message-ID:  <43D7827A.2050206@mac.com>
In-Reply-To: <43D73F10.70408@frasa.net>
References:  <43D73F10.70408@frasa.net>

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Mark Frasa wrote:
> I am currently running 1 HTTP server on FreeBSD 6.0
> 
> Offcourse, like anyone that likes security, i am running IPFW and set
> the kernel to block by default.
> 
> Behind that HTTP server i am running 2 Linux boxes.
> 
> The problem is that when i enable the firewall and openup ports from
> rpcinfo -p:
[ ... ]
> I opened up all these ports but i cant do an ls or write to nfs or
> whatever.

You should not be running portmap and NFS on a firewall machine.  You should not
attempt to pass NFS or other filesharing through a firewall, except perhaps by
using VPN tunneling.

If this existing machine needs to do NFS to your other Linux boxes, it should be
placed behind a properly hardened firewall which perhaps uses NAT to forward
HTTP connections inside to it.

-- 
-Chuck



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