Date: Tue, 29 Apr 2008 10:14:59 -0700 From: Julian Elischer <julian@elischer.org> To: "Wilkinson, Alex" <alex.wilkinson@dsto.defence.gov.au>, FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: Multiple routing tables in action... Message-ID: <48175793.30606@elischer.org> In-Reply-To: <20080429084032.GW71371@stlux503.dsto.defence.gov.au> References: <48134DDE.9010306@elischer.org> <20080429084032.GW71371@stlux503.dsto.defence.gov.au>
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Wilkinson, Alex wrote: > 0n Sat, Apr 26, 2008 at 08:44:30AM -0700, Julian Elischer wrote: > > >A little progress report > >From a recently installed (6.3) machine.... (plus patches) > > Ok, being ignorant to this, possibly a silly question: > > Why would i want or need multiple routing tables ? any time you wnat to base a route upon something other than just the destination address. It's basically called "Policy based routing". Trivial examples: You have two ISPs and you want to send all SMTP via one link and all other traffic via the other. You have 3 ISPs and want all traffic from the accounting department to go via a particular path (that is encrypted) but regular office chatter to go via another. I have other more complex examples in my work. I'm sure others have more solid examples as well. google for policy routing.
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