[opensuse] CUPS Server for Win and Nix Network Printing
Hi all, I have used Novell's SuSE 10.1 with CUPS as network Print Server for Linux and Windows Clients. I've had to use SAMBA and then share a SMB printer for all the clients, even for the Linux boxes. With the SUSE 10.0/10.1 printmgr program, I could scan the network for all network printers, but not see the broadcasting CUPS servers. YaST's hardware tool for Printers behaves the same way. Is there a quick and simple procedure to set up a OpenSUSE 10.2 CUPS print server and get a OpenSUSE 10.2 workstation get the CUPS printer on the CUPS Server? Other Network Printers, like HP-JetDirect, are easily connected with socket://<IP>:9100. Thew CUPS Server has the following: alc1100 (Default Printer) Description: EPSON AL-C1100 Location: USB printer on //EPSON/AL-C1100 Make and Model: EPSON AL-C1100, ESC/PageS Filter Printer State: idle, accepting jobs, published. Device URI: usb://EPSON/AL-C1100 How should a CUPS Printer on a workstation be configured, that prints to the OpenSUSE 10.2 CUPS Server? As a SMB Printer it is easily done on the OpenSUSE 10.2 workstation machine with YaST's hardware tool. YaST's Printer Configuration on the OpenSUSE 10.2 workstation for a SMB Printer on the CUPS Server above: Epson AL-C1100 / alc1100 Shared Connected As samba://<user:passwd@<domain>/<cupsserver>/alc1100 With Spool alc1100 What is the procedure for printing from one OpenSuse 10.2 workplace to the OpenSUSE 10.2 CUPS Server without SAMBA? I'v tried YaST's hardware tool and used "Network Printers" - "Print via CUPS Network Server", but it does not find the CUPS Server. :-) Al -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Instead of relying on the broadcast of the cups server just type in the IP address (private) of the PC running cups and then click "lookup" and you will have success. You will need to select cups-client only after you select Network Printers from the Yast Printer on the client. Broadcast often fails to find servers per say - You will probably have the same problem establishing an NFS client where again, instead to searching for the NFS server you will need to enter the NFS servers IP (private) address Scott LLLActive@GMX.Net wrote:
Hi all,
I have used Novell's SuSE 10.1 with CUPS as network Print Server for Linux and Windows Clients. I've had to use SAMBA and then share a SMB printer for all the clients, even for the Linux boxes.
With the SUSE 10.0/10.1 printmgr program, I could scan the network for all network printers, but not see the broadcasting CUPS servers. YaST's hardware tool for Printers behaves the same way. Is there a quick and simple procedure to set up a OpenSUSE 10.2 CUPS print server and get a OpenSUSE 10.2 workstation get the CUPS printer on the CUPS Server? Other Network Printers, like HP-JetDirect, are easily connected with socket://<IP>:9100.
Thew CUPS Server has the following:
alc1100 (Default Printer) Description: EPSON AL-C1100 Location: USB printer on //EPSON/AL-C1100 Make and Model: EPSON AL-C1100, ESC/PageS Filter Printer State: idle, accepting jobs, published. Device URI: usb://EPSON/AL-C1100
How should a CUPS Printer on a workstation be configured, that prints to the OpenSUSE 10.2 CUPS Server?
As a SMB Printer it is easily done on the OpenSUSE 10.2 workstation machine with YaST's hardware tool. YaST's Printer Configuration on the OpenSUSE 10.2 workstation for a SMB Printer on the CUPS Server above:
Epson AL-C1100 / alc1100 Shared Connected As samba://<user:passwd@<domain>/<cupsserver>/alc1100 With Spool alc1100
What is the procedure for printing from one OpenSuse 10.2 workplace to the OpenSUSE 10.2 CUPS Server without SAMBA? I'v tried YaST's hardware tool and used "Network Printers" - "Print via CUPS Network Server", but it does not find the CUPS Server.
:-) Al
On Thu 14 June 2007 01:57, Registration Account wrote:
Instead of relying on the broadcast of the cups server just type in the IP address (private) of the PC running cups and then click "lookup" and you will have success. You will need to select cups-client only after you select Network Printers from the Yast Printer on the client.
Broadcast often fails to find servers per say - You will probably have the same problem establishing an NFS client where again, instead to searching for the NFS server you will need to enter the NFS servers IP (private) address
Scott
LLLActive@GMX.Net wrote:
Hi all,
I have used Novell's SuSE 10.1 with CUPS as network Print Server for Linux and Windows Clients. I've had to use SAMBA and then share a SMB printer for all the clients, even for the Linux boxes.
With the SUSE 10.0/10.1 printmgr program, I could scan the network for all network printers, but not see the broadcasting CUPS servers. YaST's hardware tool for Printers behaves the same way. Is there a quick and simple procedure to set up a OpenSUSE 10.2 CUPS print server and get a OpenSUSE 10.2 workstation get the CUPS printer on the CUPS Server? Other Network Printers, like HP-JetDirect, are easily connected with socket://<IP>:9100.
Thew CUPS Server has the following:
alc1100 (Default Printer) Description: EPSON AL-C1100 Location: USB printer on //EPSON/AL-C1100 Make and Model: EPSON AL-C1100, ESC/PageS Filter Printer State: idle, accepting jobs, published. Device URI: usb://EPSON/AL-C1100
How should a CUPS Printer on a workstation be configured, that prints to the OpenSUSE 10.2 CUPS Server?
As a SMB Printer it is easily done on the OpenSUSE 10.2 workstation machine with YaST's hardware tool. YaST's Printer Configuration on the OpenSUSE 10.2 workstation for a SMB Printer on the CUPS Server above:
Epson AL-C1100 / alc1100 Shared Connected As samba://<user:passwd@<domain>/<cupsserver>/alc1100 With Spool alc1100
What is the procedure for printing from one OpenSuse 10.2 workplace to the OpenSUSE 10.2 CUPS Server without SAMBA? I'v tried YaST's hardware tool and used "Network Printers" - "Print via CUPS Network Server", but it does not find the CUPS Server.
:-)
Al
Hi Scott, Thanx for the info. I noticed this problem before. I will look into it with the answer from Johannes as well. :-) Al -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
Hello, On Jun 6 23:15 LLLActive@GMX.Net wrote (shortened):
How should a CUPS Printer on a workstation be configured, that prints to the OpenSUSE 10.2 CUPS Server?
There is no "one single way" but there is a recommended way, see http://en.opensuse.org/SDB:CUPS_in_a_Nutshell "Configuring CUPS in the Network"
As a SMB Printer it is easily done on the OpenSUSE 10.2 workstation
Note that printing via SMB requires a complete print system on the Linux workstation (i.e. you cannot use a "client-only configuration" on the workstation if it should also print via SMB), see http://en.opensuse.org/SDB:Printing_via_SMB_%28Samba%29_Share_or_Windows_Sha...
What is the procedure for printing from one OpenSuse 10.2 workplace to the OpenSUSE 10.2 CUPS Server without SAMBA?
Normally the procedure is to do nothing ;-) Just let the cupsd run on the workstations as it comes out-of-the-box. If then the cupsd on the workstations does not get the browsing information from the CUPS server, check that the CUPS server actually emits browsing information to the desired workstations and that the cupsd on the workstations can receive it. In particular note that port 631 TCP and UDP must be allowed in firewall settings, see http://en.opensuse.org/SDB:CUPS_in_a_Nutshell "The Spooler" In the YaST firewall module there are predefined "services" for IPP (and also for Samba if you use Samba) so that it should be easiest to use the YaST firewall module. Check if a firewall is active for a network zone in which services should be used which require trusted users (nobody lets arbitraty users print on his printer). By default the Suse firewall allows any access via a network interface which belongs to the "internal zone" because this zone is trusted by default. If the CUPS server and the client systems are in an internal network and when you trust all what there is in your internal network, your network interface must be set to be in the "internal zone". It doesn't make sense to have a network setup in a trusted internal network with a network interface which belongs to the untrusted "external zone" (which is the default to be safe). By the way: Up to Suse Linux 10.1 we had CUPS 1.1 and since openSUSE 10.2 we have CUPS 1.2 which is not fully backward compatible with CUPS 1.1. For example RunAsUser is no longer supported so that since openSUSE 10.2 / CUPS 1.2 the cupsd runs as root and therefore we are back to its default "basic authentication" via system users and system passwords (in /etc/shadow). Therefore http://en.opensuse.org/SDB:Printer_Configuration_from_SUSE_LINUX_9.0_on is partially outdated for openSUSE 10.2 Additionally by default cupsd in CUPS 1.2 listens only on internal ("localhost") network interfaces (and a Unix domain socket) in /etc/cups/cupsd.conf: ------------------------------------------------------------ # Only listen for connections from the local machine. Listen localhost:631 Listen /var/run/cups/cups.sock ------------------------------------------------------------ For a CUPS network server you must change it to listen on the outer network too. Either add someting like "Listen IP.of.your.server", see http://localhost:631/help/ref-cupsd-conf.html?TOPIC=References&QUERY=#Listen or use YaST via "Other" -> "Change remote access" and make sure that you use the firewall to protect your host if it is accessible from any untrusted network. In case of an update it is recommended not to use an outdated cupsd.conf from a CUPS 1.1 installation before but to start from scratch with the original cupsd.conf from our CUPS 1.2 RPM. Kind Regards Johannes Meixner -- SUSE LINUX Products GmbH, Maxfeldstrasse 5, 90409 Nuernberg, Germany AG Nuernberg, HRB 16746, GF: Markus Rex -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
See below: On Thu 14 June 2007 08:34, Johannes Meixner wrote:
Hello,
On Jun 6 23:15 LLLActive@GMX.Net wrote (shortened):
How should a CUPS Printer on a workstation be configured, that prints to the OpenSUSE 10.2 CUPS Server?
There is no "one single way" but there is a recommended way, see http://en.opensuse.org/SDB:CUPS_in_a_Nutshell "Configuring CUPS in the Network"
As a SMB Printer it is easily done on the OpenSUSE 10.2 workstation
Note that printing via SMB requires a complete print system on the Linux workstation (i.e. you cannot use a "client-only configuration" on the workstation if it should also print via SMB), see http://en.opensuse.org/SDB:Printing_via_SMB_%28Samba%29_Share_or_Windows_Sh are
What is the procedure for printing from one OpenSuse 10.2 workplace to the OpenSUSE 10.2 CUPS Server without SAMBA?
Normally the procedure is to do nothing ;-)
Just let the cupsd run on the workstations as it comes out-of-the-box. If then the cupsd on the workstations does not get the browsing information from the CUPS server, check that the CUPS server actually emits browsing information to the desired workstations and that the cupsd on the workstations can receive it.
In particular note that port 631 TCP and UDP must be allowed in firewall settings, see http://en.opensuse.org/SDB:CUPS_in_a_Nutshell "The Spooler"
In the YaST firewall module there are predefined "services" for IPP (and also for Samba if you use Samba) so that it should be easiest to use the YaST firewall module.
Check if a firewall is active for a network zone in which services should be used which require trusted users (nobody lets arbitraty users print on his printer).
By default the Suse firewall allows any access via a network interface which belongs to the "internal zone" because this zone is trusted by default.
If the CUPS server and the client systems are in an internal network and when you trust all what there is in your internal network, your network interface must be set to be in the "internal zone".
It doesn't make sense to have a network setup in a trusted internal network with a network interface which belongs to the untrusted "external zone" (which is the default to be safe).
By the way:
Up to Suse Linux 10.1 we had CUPS 1.1 and since openSUSE 10.2 we have CUPS 1.2 which is not fully backward compatible with CUPS 1.1.
For example RunAsUser is no longer supported so that since openSUSE 10.2 / CUPS 1.2 the cupsd runs as root and therefore we are back to its default "basic authentication" via system users and system passwords (in /etc/shadow). Therefore http://en.opensuse.org/SDB:Printer_Configuration_from_SUSE_LINUX_9.0_on is partially outdated for openSUSE 10.2
Additionally by default cupsd in CUPS 1.2 listens only on internal ("localhost") network interfaces (and a Unix domain socket) in /etc/cups/cupsd.conf: ------------------------------------------------------------ # Only listen for connections from the local machine. Listen localhost:631 Listen /var/run/cups/cups.sock ------------------------------------------------------------ For a CUPS network server you must change it to listen on the outer network too. Either add someting like "Listen IP.of.your.server", see http://localhost:631/help/ref-cupsd-conf.html?TOPIC=References&QUERY=#Liste n or use YaST via "Other" -> "Change remote access" and make sure that you use the firewall to protect your host if it is accessible from any untrusted network.
In case of an update it is recommended not to use an outdated cupsd.conf from a CUPS 1.1 installation before but to start from scratch with the original cupsd.conf from our CUPS 1.2 RPM.
Kind Regards Johannes Meixner -- SUSE LINUX Products GmbH, Maxfeldstrasse 5, 90409 Nuernberg, Germany AG Nuernberg, HRB 16746, GF: Markus Rex
Thanx a lot Johannes! It is quite detailed. I will dig into the topic in the next few days and report back to the list. Scott's idea will also be checked. Al -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
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