[CentOS] Cannot open port 631 for Cups printer sharing

JohnS jses27 at gmail.com
Mon Mar 2 17:47:10 UTC 2009


On Mon, 2009-03-02 at 12:28 -0500, b.j. mcclure wrote:
> On Mon, 2009-03-02 at 11:50 -0500, Roger Wells wrote:
> > JohnS wrote:
> > > On Mon, 2009-03-02 at 11:20 -0500, b.j. mcclure wrote:
> > >   
> > >> I have been trying to set up printer sharing on the LAN.All machines are
> > >> CentOS 5.2 fully updated. The problem server is a fresh build.  The box
> > >> it is replacing worked fine for many months.
> > >> The problem appears to be a closed port 631 on the new box.  iptables
> > >> and ip6tables are stopped as shown by the output below.  To confirm I
> > >> was using nmap correctly I ran it against the old server first which
> > >> shows 631 open.  No matter what I do to the new box (192.168.2.205) 631
> > >> remains closed.  I was running it on the new box via ssh which I think
> > >> eleminates any swithc/router issues.
> > >>
> > >> Any thoughts gladly accepted.  This must be something simple/stupid I
> > >> have overlooked.  Not much hair left to pull out. ;-/
> > >>     
> > >
> > > Do you have the Cups Service running? service cups status and service
> > > hplip status.
> > >
> > >   
> > I don't have an answer but I have to believe that your problem
> > is related to mine (thread: cups & hp-toolbox)
> > my machine: Linux rwells-rh 2.6.18-92.1.22.el5 #1 SMP Tue Dec 16 
> > 12:03:43 EST 2008 i686 i686 i386 GNU/Linux
> > [root at rwells-rh legacydp]# /sbin/service hplip status
> > hpiod (pid 6422) is running...
> > hpssd (pid 6427) is running...
> > 
> > [root at rwells-rh legacydp]# /sbin/service cups status
> > cupsd (pid 6453) is running...
> > 
> > 10.40.90.14 is my IP address
> > [roger at rwells-rh legacydp]$ nmap -sT -p 631 -PT 10.40.90.14
> > 
> > Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2009-03-02 11:34 EST
> > Interesting ports on rwells-rh (10.40.90.14):
> > PORT    STATE  SERVICE
> > 631/tcp closed ipp
> > 
> > Interesting that when the local host address is used the port is open:
> > [root at rwells-rh legacydp]# nmap -sT -p 631 -PT 127.0.0.1
> > 
> > Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2009-03-02 11:47 EST
> > Interesting ports on localhost.localdomain (127.0.0.1):
> > PORT    STATE SERVICE
> > 631/tcp open  ipp
> > 
> > Nmap finished: 1 IP address (1 host up) scanned in 0.017 seconds
> > 
> > I hope that there are some clues here
> > > JohnStanley
This post was for you also: 
http://lists.centos.org/pipermail/centos/2009-March/072868.html

JohnStanley



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