[CentOS] Cannot open port 631 for Cups printer sharing

Mon Mar 2 21:44:35 UTC 2009
b.j. mcclure <keepertoad at bellsouth.net>

On Mon, 2009-03-02 at 16:23 -0500, JohnS wrote:
> On Mon, 2009-03-02 at 15:46 -0500, b.j. mcclure wrote:
> > I think the first problem is we have somehow merged two threads.  The
> > first was Mr. Wells issue which is different from mine.  His port 631 is
> > "open" when nmap is run from localhost but not when run against the IP.
> > My port 631 is closed regardless of whether it is run from localhost or
> > remotely against the IP.  My cupsd.conf works.  An identical machine
> > co-located has an identical cupsd.conf and shares the same printer
> > nicely on the same LAN.  The same nmap configuration run against that
> > machine shows port 631 open in both above cases.  My conclusion, FWIW,
> > is that it is not a cups config issue but a port issue.  
> > 
> > Also, the cups site link confirms that @LOCAL means local network which
> > is all I'm looking for.  The laserjet 1300 has been supported for at
> > least a few years now.
> Correct
> Lets get something straight. You "B.J"  are using a machine to be a
> spooler for clients? 2 machines exactly? 2 machines acting as Spooler
> Servers? Correct? The main issue is Clients can not see (connect) to the
> machine because no open port.
> 1. Can the spooler machine in question print locally?
> 2. Whats the RPM version for cups
> JohnStanley

Sorry for the confusion.  I am replacing a box that acts as a print
server for a LAN consisting of 11 machines, all running centos 5.2, and
occasionally a lappie or two thrown in. The new box is/was the machine I
had the issue on.  It now appears to be "solved" after I scp'd the
config file over for the second time.  Not sure what I clutzed up the
first time but the config file was apparently the issue.  Since I
overwrote the offending config file I have no way of knowing what the
difference was.  Looking at the working config file it appears to me to
be box stock, as was the non-working one.

Thanks much for all the help and my apologies for being a bit pig-headed
about the config file.


CentOS 5.2, Linux 2.6.18-92.1.22.el5 x86_64 16:33:09 up 23:27, 1 user,
load average: 0.04, 0.09, 0.08