In this article, I will share with you about my second time installing CUPS on Ubuntu. Requriement Ubuntu 18.04 LTS Install on an Old Computer Canon E410 Series Printer Internet CUPS Installation and Configuration Step by Step Install CUPS on your system #install cups sudo apt-get install cups cups-pdf cups-bsd Back up the configuration file #copy configuration file sudo cp /etc/cups/cupsd.conf cupsd.conf.bak Editing the CUPS configuration file #add user simith to lpadmin group sudo usermod -aG lpadmin simith #edit cupsd.conf sudo vim cupsd.conf Edited cupsd.conf contents.(Configuration options not mentioned should be left as default.) #allow access port Port 63100 LogLevel warn PageLogFormat MaxLogSize 200 1. Show shared printers on the local network. Browsing on BrowseLocalProtocols dnssd 1. Web interface setting... WebInterface Yes 1. Restrict access to the server... <Location /> Order Allow,deny Allow @LOCAL Allow From 127.0.0.1 Allow From 192.168.0.0/16 </Location> 1. Restrict access to the admin pages... <Location /admin> #access user simith can visit admin page Require user simith Order Allow,deny Allow @LOCAL Allow 127.0.0.1 Allow From 192.168.0.0/16 </Location> 1. Restrict access to configuration files... <Location /admin/conf> AuthType Default Require user simith Order allow,deny Allow @LOCAL Allow 127.0.0.1 Allow From 192.168.0.0/16 </Location> 1. Restrict access to log files... <Location /admin/log> AuthType Default Require user simith Order allow,deny Allow @LOCAL Allow 192.168.0.0/16 </Location> Restart CUPS service and add to starup sudo systemctl restart cups sudp systemctl enable cups End Finally, you can visit the Ubuntu IP address and configuration Example: " http:// ubuntu ip address:63100 " Another article 打印服务器cups安装笔记https://www.itiohub.com/log/413.html