[PLUG] ports not accessible to local network?

[Brian Quade]

I have two machines on a network, rh9cups and fc2bind.
rh9cups runs RH9, has a printer attached, and runs CUPS as a server.
fc2bind runs Fedora Core2 and BIND as the authoritative server for the 
local domain.

rh9cups resolv.conf file lists fc2bind's IP address as its first name 
server, but running dig from rh9cups shows that it is using the 
secondary name server (the ISP) and is not resolving any of my local 
addresses.

 From fc2bind, if I run "nmap localhost" it shows 4 ports open (ssh, 
domain, ipp, rndc).
 From rh9cups, if I run "nmap 192.168.123.2" it shows only 1 port open 
(ssh).
(192.168.123.2 is the IP address of fc2bind)
Can a port be opened for local access only?  And if so, how can that be 
changed?
Is this an incorrectly configured BIND setup?

I am wondering if this is why the print server doesn't work either.  I 
had assumed it was just me because I have had trouble setting up CUPS in 
the past, but since rh9cups does not even see that fc2bind has an ipp 
port open I am wondering if it is the same problem.  fc2bind can see 
that rh9cups has an ipp port open, but it still does not see the printer.

Any suggestions?