Live-CD Firewall Solutions?

paRcat asks: "My company isn't huge, and up until now has done well enough hosting all of our websites/email/etc. We've done all of this over one T1, but recently added another circuit for that rare instance of a fibercut. So since then I have been researching different options for configuring the existing Linux firewall (debian+iptables) to allow using the second circuit for load-balancing and failover. The issues I'm running into mostly have to do with recompiling the kernel using certain patches and creating semi-elaborate routes. Faced with these options, I'm wondering if there are any open source firewall projects out there that will behave happily with the above scenario. Do any free projects actually give this level of connectivity without being overly difficult in the configuration? I've gone the compile-your-own kernel route in the past, but now I'd just like to drop in a premade solution. A configurable live-CD would be perfect."