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Date:      Wed, 28 Aug 1996 11:58:36 +0930 (CST)
From:      Michael Smith <msmith@atrad.adelaide.edu.au>
To:        hasty@netcom.com (Amancio Hasty Jr)
Cc:        hackers@freebsd.org
Subject:   Re: routing question
Message-ID:  <199608280228.LAA10420@genesis.atrad.adelaide.edu.au>
In-Reply-To: <199608280125.SAA15780@netcom18.netcom.com> from "Amancio Hasty Jr" at Aug 27, 96 06:25:33 pm

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Amancio Hasty Jr stands accused of saying:
> 
> I have a box with an ethernet interface and a slip line.
> The ethernet is on a different network than the slip line.
> What i want to know if I have to install a firewall to prevent
> people outside my complex to access my LAN.

Is the box forwarding packets? (ie is the sysctl variable
net.inet.ip.forwarding 0 or 1?)  If not, then you already have a firewall 8)

If it is (ie. you are connecting to the net from your LAN) then you are
currently vulnerable.

My _personal_ preference for this situation is to turn of forwarding and 
install a SOCKS proxy on the gateway box.  This works for me and our 
application mix here, it may not work for you.

> 	Amancio

-- 
]] Mike Smith, Software Engineer        msmith@atrad.adelaide.edu.au    [[
]] Genesis Software                     genesis@atrad.adelaide.edu.au   [[
]] High-speed data acquisition and      (GSM mobile) 0411-222-496       [[
]] realtime instrument control          (ph/fax)  +61-8-267-3039        [[
]] Collector of old Unix hardware.      "Where are your PEZ?" The Tick  [[



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