Re: failover strategies - failing open vs. failing closed.

Linux Advanced Routing and Traffic Control

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On Tuesday 28 December 2004 14:29, Kelly Jeglum wrote:
> I'd like to setup a box with 2 NICs as a firewall which will also rate
> limits outbound traffic.  What happens when/if that box hangs or is
> rebooted?
>
> I'd like a solution that when there is a failure, traffic can still go
> through the box even though the firewall and rate limiting functions will
> no longer be in effect.
I'm afraid that's not possible if the box is also doing NAT.  What you can do 
is use 2 boxes and only 1 of them is active.  If it fails, the other takes 
over.
Take a look at http://www.linuxvirtualserver.org/.  You need the loadbalancer 
part of it.


Stef
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