CUPS

Turn your QNAP NAS into a network print server to manage, share and monitor printers through a secure HTTPS web interface.

Key Features

• Support for USB and network printers (IPP, IPPS, LPD, JetDirect/Socket).
• Secure HTTPS administration with TLS encryption.
• Automatic printer discovery using Avahi/Bonjour.
• Integrated Ghostscript, Poppler and OpenPrinting cups-filters.
• Print queue management, printer configuration and test pages.
• Persistent settings, printer queues and credentials across updates.
• Dedicated start, stop, restart and diagnostic scripts.

Requirements

QTS 6 or QuTS hero 6 minimum. Supports x86_64 and ARM64. Core printing dependencies are bundled.

Quick Start

1. Install and start the CUPS QPKG on your NAS.
2. Open https://NAS-IP:16631/admin in your browser.
3. Log in with username cupsadmin.
4. Find the automatically generated password in QTS QuLog Center → Event Logs (search for CUPS web ready).
5. Click Add Printer, select your USB or network printer, and follow the setup wizard.
6. Print a test page to verify your configuration.

Useful Information

• Web interface: https://NAS-IP:16631
• HTTPS port: 16631/TCP
• Bonjour/mDNS: 5353/UDP (when enabled)
• Installation directory: /opt/CUPS
• Service control: /opt/CUPS/start.sh and /opt/CUPS/stop.sh
• Diagnostics: /opt/CUPS/healthcheck.sh
• Runtime logs: /opt/CUPS/logs/

To retrieve your administrator password via SSH:

cat /opt/CUPS/etc/cups/.cupsadmin-password

A browser certificate warning may appear because CUPS uses a self-signed HTTPS certificate by default.

Last update: 17 October 2026