Load Balancing Multiple Internet Conenctions

I have multiple Internet Connections of which none are 100% reliable.
I have Frame Relay, Cable, and DSL.

I have a Linux box as a Firewall between those internet connections
and my network. Currently I am just making the switch in the DHCP
server when one goes down, but I would like it to be automatic on the
Linux Box. I would also like to Load Balance as well while I am at
it. Is this possible with a Linux Box or would I have to go the route
of something like a Cisco PIX Firewall?

TIA!

Neil Mowatt

> I have multiple Internet Connections of which none are 100% reliable.
> I have Frame Relay, Cable, and DSL.
>
> I have a Linux box as a Firewall between those internet connections
> and my network. Currently I am just making the switch in the DHCP
> server when one goes down, but I would like it to be automatic on the
> Linux Box. I would also like to Load Balance as well while I am at
> it. Is this possible with a Linux Box or would I have to go the route
> of something like a Cisco PIX Firewall?

http://www.tldp.org/HOWTO/Adv-Routing-HOWTO/index.html

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