So I need a firewall for my home lab and settled on OPNsense. I got a Dell recoverpoint box from work. 4 NICS, 12GB of RAM, 2x Six Core E5-2620, 2x 300GB HDD. I had planned on using this as the OPNsense box...but...I feel like it's overkill. I also feel like it's going jack my electric bill...