How to Enable IPv6 Support on a Plesk Server

If you’re using Plesk for Linux, enabling IPv6 support is straightforward but requires administrative access and a bit of command-line work to Enable IPv6 Support on a Plesk Server.

Prerequisites

• Root or sudo access to your server via SSH
• Plesk installed on a Linux distribution
• Access to the Plesk Web UI

Step 1: Enable IPv6 at the OS Level

Log in to your server via SSH

ssh root@your-server-ip

Create a new configuration file for system control settings:

touch /etc/sysctl.d/ipv6.conf

Edit the file using your preferred text editor (e.g., nano or vim) and add the following lines:

net.ipv6.conf.all.disable_ipv6=0
net.ipv6.conf.default.disable_ipv6=0

Apply the new IPv6 settings immediately without rebooting:

sysctl -w net.ipv6.conf.default.disable_ipv6=0
sysctl -w net.ipv6.conf.all.disable_ipv6=0

This ensures that IPv6 is enabled across all interfaces, including default system behavior.

Step 2: Add IPv6 Address in the Plesk Panel

Now that the OS is IPv6-ready, it’s time to tell Plesk about your IPv6 addresses.

1. Log in to your Plesk Web UI.
   Navigate to Tools & Settings > IP Addresses.
2. Click Add IP Address.
3. Enter your IPv6 address and assign it to the appropriate network interface.
4. Save your changes.

Step 3: Enable IPv6 for the Plesk Control Panel 

To allow the Plesk UI (Control Panel) to listen over IPv6, create the following file:

touch /etc/sw-cp-server/conf.d/ipv6_ports.inc

Open it and add the following configuration:

listen  [::]:8443 ipv6only=on ssl;
listen  [::]:8880 ipv6only=on;

This will allow Plesk to be accessed over IPv6 using HTTPS (8443) and HTTP (8880).

Finally, restart the Plesk control panel server:

service sw-cp-server restart

Conclusion

Your Plesk server is now ready to handle IPv6 traffic both at the operating system level and through the web control panel. 

If you encounter any issues, double-check your system firewall, interface bindings, and DNS configurations.

If you’re looking to Enable IPv6 Support on a Plesk Server but aren’t sure where to start, Skynats is here to help. Our expert team specializes in server management services and can ensure your Plesk server is configured for optimal IPv6 compatibility, security, and performance. Whether it’s a one-time setup or ongoing support, we’ve got you covered.

Get in touch with Skynats today to streamline your server configuration and future-proof your hosting environment with professional support.