@mattlach:
Unless you have a need to keep the networks on each of those ports separate from eachother, you'd be better off buying a cheap switch (netgear GS105 for $24 maybe?) connecting the switch to a single LAN port and connecting everything else to that switch and leaving your two empty ports empty, than you are trying to mess with multiple LAN ports on your pfSense box.
Performance wise even a very low end switch like the Netgear one linked above will perform leaps and bounds better than trying to bridge LAN ports. This is not a pfSense thing. This is a "the way networks work" kind of thing.
Even if power consumption is your main concern, using an actual switch for switching is a better idea. Bridging or routing to multiple lan ports is going to cause extra CPU load on the pfSense box, probably costing you more in power than using a switch would.
Faster, less power, less complicated setup. There really is no reason to mess with multiple LAN ports - unless of course - you absolutely need separate LAN's, which outside of complicated enterprise setups, most people never do.
@TheRiceKing:
Then I guess my Intel quad NIC card is an overkill for my pfSense box. I got the PCIe Intel GB quad card under $50 because I though I would need it in order to do other fun stuff while I learn networking.
Thanks again.
Unfortunately, yeah. if I had caught you before you bought hardware, I would have recommended sticking with a cheaper dual port NIC.
That's not to say that quad ports don't have their uses. I use one in a very busy virtualized server using link aggregation as a cheaper (and very limited) alternative to 10gig ethernet. The quad ports are fairly sought after though. You might be able to sell it, replace it with a cheaper dual port, and buy yourself a nice switch with the leftover money :p
You made a lot of great points. I appreciate you taking the time to explain all the very valid points. I agree on putting performance, simplicity, and efficiency at the top of the list.
Thanks again.