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Date:      Thu, 15 Apr 1999 17:32:54 -0700
From:      Dave Smith <dsmith@n2.net>
To:        freebsd-isp@freebsd.org
Cc:        Bill Fumerola <billf@chc-chimes.com>
Subject:   Re: FreeBSD as a Layer 4 Switch,
Message-ID:  <19990415173254.B29019@n2.net>
In-Reply-To: <Pine.HPP.3.96.990415151237.2902M-100000@hp9000.chc-chimes.com>; from Bill Fumerola on Thu, Apr 15, 1999 at 03:13:52PM -0400
References:  <3715BC03.7171E828@magna.com.au> <Pine.HPP.3.96.990415151237.2902M-100000@hp9000.chc-chimes.com>

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On Thu, Apr 15, 1999 at 03:13:52PM -0400, Bill Fumerola wrote:
> On Thu, 15 Apr 1999, Phillip Grasso-Nguyen wrote:
> 
> > Would it be possible to use FreeBSD as a layer 4 switch,
> > 
> > So it can do port redirection, and possible have 2 boxes for redundancy
> 
> Sure. ipfw forward could do most(well, all) of the work of the port
> redirection. socket(1) (from the ports collection) can be used as well, at
> the cost of a fork() (or however inetd does it's thing, I don't feel like
> getting out my UNP book :>) for each connection.
> 
> Redundancy however is another interesting question/.
> 
> - bill fumerola - billf@chc-chimes.com - BF1560 - computer horizons corp -
> - ph:(800) 252-2421 - bfumerol@computerhorizons.com - billf@FreeBSD.org  -

Bill,

I believe that port redirection is only part of what a layer 4 switch
has to offer.

With most layer 4 switches I believe you get load balancing amongst a
group of machines.  Then if one goes down, the load gets transfered to
the other machines in the group.

Has anyone thought about this type of an application?  I know that it
would really put FreeBSD on the map if this was available for free.

Dave

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