I want to get a router to use with a cable modem that supports more than one IP address. I want to have two IP addresses. The reason for two IP addresses is to route an incoming connection for the same service to a specific server on the local area network based on the IP address the connection comes in on. I want something that also supports VPN (may need that in the future). What model Cisco router should we get? No need for more than eight LAN ports. Don't need wireless. 4 ports is currently okay.