About the Dynamic DNS Service
You can register the external IP address of your Firebox with a dynamic Domain Name System (DNS) service provider. A dynamic DNS (DDNS) service makes sure that the IP address attached to your domain name changes if the external IP address of your Firebox changes. This feature is available only in mixed routing network configuration mode.
You can register the external IP address of the Firebox with one of these dynamic DNS service providers:
- Cloudflare.com (Fireware v12.5.4 or higher for locally-managed Fireboxes)
Dyn.com offers tiered pricing; the other providers offer free services. WatchGuard is not affiliated with these providers. Fireware supports only these dynamic DNS service providers.
How It Works
You must configure your Firebox with an operational DNS server. The Firebox uses the DNS server to resolve the domain name of the service provider specified in the dynamic DNS configuration. Next, the Firebox logs in to your account on the service provider website. The Firebox registers its external IP address for the domain name you purchased.
The Firebox immediately sends updated information to your dynamic DNS service provider if:
- The Firebox is configured as a DHCP client, and the external interface is assigned a new IP address by your ISP
- You manually change the external IP address of the Firebox
- You make any changes to the dynamic DNS configuration on your Firebox
The Firebox also contacts the dynamic DNS service provider every 28 days by default. You can specify an update interval from 1 to 28 days.
To configure dynamic DNS on your Firebox, see Configure Dynamic DNS.
To configure dynamic DNS for a cloud-managed Firebox in WatchGuard Cloud, see Configure Dynamic DNS.