Add a dynamic DNS provider
Sophos Firewall supports third-party dynamic DNS (DDNS) providers.
To add a dynamic DNS provider, do as follows:
- Go to Network > Dynamic DNS and click Add.
Enter the hostname you received when you registered with your DDNS service provider using the following format:
Some providers may use a different format. For example, you may need to specify the domain and subdomains for some providers and use just the domain as a sign-in name. Check with your DDNS provider.
We're discontinuing Sophos DDNS in 18.5 MR1 and later. You can't register DDNS domains using
Select an interface. Its IP address is bound to the hostname you've specified.
Select the IPv4 address of the interface.
- Use port IP: IP address of the interface.
- NATed public IP: Translated IP address of the interface. Use this if your firewall is behind a router and uses a private IP address.
Sophos Firewall checks for a change in the server IP address every 5 minutes.
Select the third-party DDNS provider from the Service provider drop-down list.
Enter the Login name and Password based on your provider.
If your provider doesn't require a username you must enter your domain for the Login name.
DDNS provider Credentials DynDns Username
Updater client key
See Dynamic DNS.
Google DDNS Username
See Router Setup Guide.
Cloudflare Email address
Global API key
See Cloudflare API key.