[TriLUG] Re: using a Linux box as a pass-through filter
brian at strutmasters.com
Mon Dec 20 09:10:18 EST 2004
This topic was addressed on the list a few months ago, talking about a
transparent drop-in linux-based firewall.. It wasn't something that I was
concerned with at the time so I don't remember a great deal about it, but
you might want to check the TriLUG archive.
----- Original Message -----
From: "Lance A. Brown" <lance at bearcircle.net>
To: "Triangle Linux Users Group discussion list" <trilug at trilug.org>
Sent: Monday, December 20, 2004 9:07 AM
Subject: [TriLUG] Re: using a Linux box as a pass-through filter
> Yep. This can be done. Someone where I work has a linux box set up as
> a bridge and is running firewall rules on it to protect a Beowolf
> cluster. The system is normally invisible to the network.
> Dan Monjar wrote:
>> An idea I had late last night while I listened to the wind howl... would
>> it be possible to setup a Linux box with two nics and use various
>> firewall rules to filter traffic and ports... the possible gotcha is
>> that I don't want either nic to have an IP address. I want to take
>> traffic in on one port, analyze and drop unwanted packets and then push
>> the acceptable traffic out through the other nic.
>> I want an in-line filter...
>> I wish everyone on the list a Happy and Safe Holiday season.
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