Bridged setup; adding another subnet?
I've just installed pfsense at a datacenter in front of a number of machines I have there. It's configured so that the WAN and OPT interfaces are bridged as per the howto, and everything is working cleanly.
My question is this: right now all of the IP addresses I use are part of the same /24 network; it looks like I'll be adding more IPs from a different class C though, and I'd like to know if pfsense handles this well.
I'm assuming I can go into lan setup and change the /24 to /16 or whatever's appropriate, and assign the new IPs as necessary, Is this correct, or is there more to it than that?
You need to change the subnetmask at all involved hosts if you want to do it this way. Another option is adding a new interface for the new subnet or doing this with vlans.
Well, the new IPs will be aliases to existing IP addresses – eth0:1, eth0:2, and so forth, so I hope I don't need to muck with netmasks and whatnot.
VLAN support would require a particular ethernet card, I take it?
You'll need a vlan capable switch. Though there are nics that can handle vlans better than others most of them should do.