How to configure CentOS to accept LPD connections from Unix clients?

The cups-lpd package must be installed and set up in order to accept requests to print using the LPD protocol on port 515. (in addition to a properly configured CUPS system).

In all versions of CentOS, first install the cups-lpd package as follows. yum install cups-lpd

Depending on the CentOS version you are using, there are different ways to enable and configure the service.

CentOS 4, 6, and 6

Enable the service and restart xinetd. Edit /etc/xinetd.d/cups-lpd and change. disable = yes to disable = no Add the following to the file /etc/xinetd.d/cups-lpd, below the line server = /usr/libexec/cups/daemon/cups-lpd server_args = -o document-format=application/octet-stream Restart the xinetd service. service xinetd restart chkconfig xinetd on Change /etc/cups/cupsd.conf as follows. # Allow remote access Port 631 Listen /var/run/cups/cups.sock # Share local printers on the local network. Browsing On BrowseOrder allow,deny BrowseAddress @LOCAL DefaultAuthType Basic <Location /> # Allow shared printing… Order allow,deny Allow @LOCAL </Location> Restart CUPS as follows. service cups restart

CentOS 7 and 8

After installing the cups-lpd package, configure systemd to start listening on the LPD socket (port 515).

systemctl enable –now cups-lpd.socket To enable CentOS to accept print jobs via LPD on port 515 and process them using CUPS, run the aforementioned command. If you also require command-line options for cups-lpd, such as the ability to turn off the printing of job cover sheets, then follow these steps to expand the systemd unit configuration. Create a directory named /etc/systemd/system/[email protected] Create a file named cups-lpd.conf Add the following entries to the file. [Service] ExecStart= ExecStart=-/usr/lib/cups/daemon/cups-lpd -o <option>=<value>

Reload the server as follows.

systemctl daemon-reload

Restart cups-lpd.

systemctl restart cups-lpd.socket

To add job-sheets=none to the cups-lpd command line, for instance.

# mkdir /etc/systemd/system/[email protected] # vi /etc/systemd/system/[email protected]/cups-lpd.conf # cat /etc/systemd/system/[email protected]/cups-lpd.conf [Service] ExecStart= ExecStart=-/usr/lib/cups/daemon/cups-lpd -o job-sheets=none # systemctl daemon-reload # systemctl restart cups-lpd.socket