[GTALUG] print serving / print clients

I have a Linux machine with a non-networked Brother printer (HL-5150D). I want the Fedora 20 machine to be a print server for a Ubuntu 12.04 machine. They are not co-operating for me. What protocol do you use or recommend? IPP (my naive choice), JetPrint (I think that's what the HP-invented protocol is called), LPR, or SMB, ...? Which are secure, easy, powerful? What firewall hacking is needed?