[psuedonym]

I think that's specifically why people will still be using routers. Nowadays, most single computers still are sitting behind routers, despite the fact that they don't actually "need" to, specifically for the firewall protection. It's a lot easier to plug into a router and forget it than it is to have to deal with setting up a firewall every time you reinstall your OS.

[wmf]

If we're talking about a box that primarily performs firewalling, let's call it a "firewall" instead of a "router". (Although as I said above, routing is still necessary in IPv6.)

[jrockway]

It's still a router. It just doesn't do NAT.

FWIW, NAT is typically done by the firewalling code, whereas routing is done in separate code.

So "router" is always correct, but "firewall" does not always apply

[blasdel]

I'd much prefer that noone calls any piece of software a 'firewall' ever again. It's been over-applied to the point of meaninglessness.