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MX Linux 23


The easiest way to set Quad9 on your entire network is via your router settings. If you'd prefer to set Quad9 on a single system, please follow the steps below to configure MX Linux 23 to use Quad9.

Firefox, VPNs

  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.


  • Right click on the Network/WiFi icon in the system tray on the left side of the screen.

    • Select Edit Connections
      • Select your connection Type (Wired or Wi-Fi), then click the ⚙ button at the bottom of the window.
  • Select the IPv4 Settings tab.

    • Change Method to Automatic (DHCP) addresses only
      • In the DNS Servers field, add:,
        • Click Save

Verify Configuration

Confirm you're using Quad9 by visiting in your preferred browser.

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