I am looking at adding a second internet connection for my business and connecting them to a 1812 router. They will be different types through different providers to give real redundancy. How would you suggest configuring this for true redundancy/failover? Using OER or just by routing protocol? What about security? Would you use the router as the firewall or add an ASA inside the router to provide a separate firewall and VPN device?
I have this problem too.