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Date:      Thu, 20 Mar 2003 11:45:44 -0800 (PST)
From:      "W. J. Williams" <willardjwilliams@yahoo.com>
To:        freebsd-questions@freebsd.org
Subject:   IPFW firewall rules not complete
Message-ID:  <20030320194544.26310.qmail@web13505.mail.yahoo.com>

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sorry about last message...!!

I am experimenting with IPFW firewalls and have hit a roadblock.  I am
trying to allow ssh, mail, dns requests, pings and traceroutes out, but
not in and webmin (port 10000).  I am hitting a roadblock on mail and
pings out.  Hope someone can help me...I am new to this and donīt
understand firewall rules syntax fully.  I have funded my own lab to
experiment with this fun and powerful stuff...

some more notes.

Firewall:two intefaces

fxp0: 192.168.0.2/29 connected to router connected to DSL demarc
(eventually I will get rid of this router and replace with BSD firewall,
but for now, I need for it to stay...partly because I can only experiment
with one thing at a time and because I have wireless laptops that connect
to this router.:-)

fxp1: 192.168.1.1/255.255.255.0:  is gateway for 10 other hosts all in the
192.168.1 network.

Rules I am using:

> add 21 deny log all from any to any in frag via fxp0
> add 1000 allow tcp from any to any established
> add 2000 allow tcp from any to 192.168.0.0/29 22,25,10000 setup
> add 3000 allow udp from 192.168.0.0/29 to any 53
> add 4000 allow udp from any 53 to 192.168.0.0/29
> add 5000 pass all from any to any via lo0
> add 6000 pass all from any to 127.0.0.0/8


Would appreciate comments on what this simple rules file should look like.
 thx!
 

=====
Will Williams

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