Dynamic Domain Name System (DDNS) is a service designed to automatically update DNS records when your IP address changes. This feature proves particularly useful when your internet connection employs a dynamic IP address, resulting in periodic changes to your public IP. By utilizing a DDNS service provider, you can eliminate the need for manual updates of your destination address each time your IP changes.

To set up DNAT with DDNS, you must first select a DDNS service provider. Several reputable providers, such as No-IP, DynDNS, and DuckDNS, offer DDNS services. Each provider has its unique set of instructions for configuring DDNS for your domain.

Once you've chosen a DDNS service, access your router or firewall's web interface to configure DDNS settings. Input the credentials provided by your chosen DDNS service provider. This step enables your router/firewall to automatically update the DDNS service with your current public IP address, ensuring seamless operation.

With DDNS configured on your router/firewall, create a DNAT rule to forward incoming traffic to the desired internal IP address. In the destination field of the rule, enter the DDNS domain name obtained from your DDNS provider. The router/firewall will resolve this domain to the current public IP address automatically, ensuring that traffic is correctly directed to the intended destination within your network.

For devices lacking native DDNS support, such as standalone IP cameras, you can implement a workaround. Set up a computer or a Raspberry Pi within your local network to run DDNS update software. This software monitors your public IP address and updates the DDNS service accordingly. Subsequently, configure the DNAT rule on your router/firewall to forward traffic to the DDNS domain name, effectively enabling communication with the device despite its lack of direct DDNS support.

Please note that the specific steps and options for configuration may vary based on your router/firewall model and the DDNS service provider you select. Consult the documentation provided by your router/firewall and DDNS service for detailed, device-specific instructions tailored to your setup.

Dynamic Domain Name System (DDNS) is a service designed to automatically update DNS records when your IP address changes. This feature proves particularly useful when your internet connection employs a dynamic IP address, resulting in periodic changes to your public IP. By utilizing a DDNS service provider, you can eliminate the need for manual updates of your destination address each time your IP changes.

To set up DNAT with DDNS, you must first select a DDNS service provider. Several reputable providers, such as No-IP, DynDNS, and DuckDNS, offer DDNS services. Each provider has its unique set of instructions for configuring DDNS for your domain.

Once you've chosen a DDNS service, access your router or firewall's web interface to configure DDNS settings. Input the credentials provided by your chosen DDNS service provider. This step enables your router/firewall to automatically update the DDNS service with your current public IP address, ensuring seamless operation.

With DDNS configured on your router/firewall, create a DNAT rule to forward incoming traffic to the desired internal IP address. In the destination field of the rule, enter the DDNS domain name obtained from your DDNS provider. The router/firewall will resolve this domain to the current public IP address automatically, ensuring that traffic is correctly directed to the intended destination within your network.

For devices lacking native DDNS support, such as standalone IP cameras, you can implement a workaround. Set up a computer or a Raspberry Pi within your local network to run DDNS update software. This software monitors your public IP address and updates the DDNS service accordingly. Subsequently, configure the DNAT rule on your router/firewall to forward traffic to the DDNS domain name, effectively enabling communication with the device despite its lack of direct DDNS support.

Please note that the specific steps and options for configuration may vary based on your router/firewall model and the DDNS service provider you select. Consult the documentation provided by your router/firewall and DDNS service for detailed, device-specific instructions tailored to your setup.