DDNS Config DNAT

If i do DNAT how to set Destination as DDNS as now i config on specific Public IP Address . If the public IP is changed, i need to manually configure the destination address again to new Public IP, is there any option i can do this one time only and choose DDNS not choosing the specific Public IP Address? Is there any workaround to do this?

Hello,

NGAF 8.0.47 now supports DDNS for dynamic IP environments.

Please find the attached file for your reference.

NGAF 8.0.47_ DDNS.pdf (335.75 KB, Downloads: 327)

18 Oct 2023 12:48 Upload

Click file name to download attachment

For further details, pls consult the NGAF 8.0.47 User Manual.

Best regards,

can please provide example of DNAT configuration that can set the destination as Public IP DDNS, rather than specific Public IP? If Public IP changes , the same DNAT configuration need to be reconfigure again accordingly.
Please share your answer if there is workaround through this.

You need to create a Central NAT.

Using DDNS or Dynamic DNS is a good solution when dealing with frequent changes in your Public IP address. With this, you can always reach you network using your hostname and the DDNS service will automatically update the DNS records with the IP address. You may want to consider the below setup when dealing with this kind of situation.

1. Sign up for a DDNS services like No-IP, DynDNS, or the likes. They usually have prepaid or postpaid plans.  You might need to follow their instructions like create a hostname and setup your DDNS client on your network to update the IP address with the DDNS service every time there's changes in the IP address.
2. Configure the DNAT rule in your router or firewall using the hostname instead of specific IP address. Steps may vary depending on the specific brand, model, and firmware version of your router or firewall device. Specify the hostname as the destination for your DNAT rule instead of specifying a fixed public IP address.
3. Testing and monitoring

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.

Sign up for a DDNS service: Choose a DDNS provider and sign up for an account. Some popular DDNS providers include No-IP, DynDNS, and DuckDNS.

Enable SSL VPN debugging: Enable SSL VPN debugging on the server to capture more detailed logs of the disconnection events. This can help in identifying the cause of the issue, such as network connectivity issues or authentication problems.

Yes, you can configure DNAT to use a DDNS hostname instead of a specific public IP address. This will allow you to avoid having to manually update the DNAT configuration if your public IP address changes. To do this, you will need to create a DNS record for your DDNS hostname that points to your public IP address. Once you have done this, you can configure DNAT to use the DDNS hostname as the destination address.

This workaround will allow you to avoid having to manually update the DNAT configuration if your public IP address changes. However, it is important to note that this workaround will only work if your ISP allows you to create static IP aliases.

Check the session timeout settings: Ensure that the session timeout for the SSL VPN is not set too low, causing frequent disconnections. You can adjust this setting in the SSL VPN configuration