iptables question

[Andrew Robinson <awrobinson@xxxxxxx>]

I want to enable lpr printing (from an Apple Powerbook running MacOS X 
10.2) for printers on my Fedora Core 1 box. According to the 
/etc/services file, printing services are given as:

printer  515/tcp  spooler  # line printer spooler
printer  515/udp  spooler  # line printer spooler

So based on previous information from this list about iptables, I added 
these two entries:

# Printer Access
-A RH-Firewall-1-INPUT -m tcp -p tcp --dport 515 -j ACCEPT
-A RH-Firewall-1-INPUT -m udp -p udp --dport 515 -j ACCEPT

My question is, is this what I want to do?

Thanks!

Andrew Robinson