Searching For Home DSL Router?

DP asks: "I'm getting DSL relatively soon, and I need a router/firewall, one that has DSL ports, Ethernet, and HomePNA, and preferably runs Linux, although as long as I can telnet in to change things it's fine. I've seen/read about various such devices, but can't really remember much other than they exist. Most I can spend is $500 or so. And don't tell me to just get an old 486 box, power consumption sucks and it doesn't have HomePNA."