[CentOS] Do i have to open port 631 for LAN printing

[Craig White]

On Sat, 2006-03-04 at 09:51 -0500, lnthai2002 at aim.com wrote:
> Hi,
> I have a Samsung printer(ML-2010) connect to my centos 4.2 machine by 
> usb. I want to share this printer with 3 windowsXP mchines in my LAN. 
> Although i have install driver for the printer on all machines, use 
> samba to share the printer, from the windows machine i still have an 
> error"access denied, can not connect to printer" or something similar. 
> In Security Level, i have checked "trusted device: eth0, sit0" , is 
> port 631 automatically open? How do i know that my problem is not 
> caused by the blocked port? Hope anyone can help
----
windows doesn't use cups port

error message of 'access denied' doesn't necessarily mean that Windows
users can't print to it (that's very confusing, I know) but that
certainly means that the users can't "manage" the printer.

in samba printer share, there is an option for 'printer admin' which if
the user/group is appropriate, will allow the user/group to 'manage' the
printer, which is generally where the 'access denied' message comes from
in a samba shared printer when looking at the 'status' from Windows
'Printers & Faxes'

Generally, I would expect the problem that you are having is that you
are using 'client side' drivers and by default, cups (via samba) is
offering a postscript printer.

I don't know what the specifics of a Samsung ML-2010 are but it would
seem that you have 2 options...

1 - set the printer up in windows as a postscript printer, preferably
using the Adobe Postscript print driver and the ppd that was created by
cups on the CentOS system when you created the printer (located
in /etc/cups/ppd)

or

2 - set the printer options within cups to allow 'raw' printing - which
allows your samba shared non-postscript printer commands to pass through
'unmolested' to the printer (see /etc/cups/mime.types
& /etc/cups/mime.convs)

All of this is summarized in the official Samba 3 HowTo...
http://samba.org/samba/docs/man/Samba-HOWTO-Collection/CUPS-printing.html

and things are starting to gel at the new samba wiki
http://wiki.samba.org

for which printing support is here...
http://wiki.samba.org/index.php/Samba_as_a_print_server

and I mention the wiki because I was drafted and am the editor of the
wiki ;-)

HTH

Craig