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NCOS: How to setup dynamic DNS

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NCOS: How to setup dynamic DNS: How to setup dynamic DNS

Products Supported: All Series 3 Cradlepoint router models. Click here to identify your router.

NCOS: 6.0 - for information on upgrading NCOS Versions, click here.

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Creating a Dynamic DNS Account

Router Configuration


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This article describes how to configure a Dynamic DNS (DynDNS) on a Series 3 Cradlepoint router.

Some Internet service providers assign publicly routable dynamically assigned IP addresses to their customers. These IP addresses may change daily, which makes it difficult to do remote administration, VPN, or portforwarding. Each time the address changes, the user must figure out the current address and reconfigure any address-dependent services before they can function correctly again.

Dynamic DNS services provide a single hostname, which is constantly updated with the IP information sent from the router. Each time the public IP address changes, the hostname is updated to resolve to the new address. This way, it becomes possible to use a hostname that never changes without needing to worry about which IP address the router currently has.


Configuration Difficulty: Intermediate

Part 1: Creating a Dynamic DNS Service Account

To configure the dynamic DNS service on the Cradlepoint router, you must first obtain an account with one of the dynamic DNS providers. The following companies provide free and/or paid services depending on your needs:

Cradlepoint also supports other custom servers that use the same settings.

Please contact your chosen dynamic DNS provider for instructions on setting up an account.

After creating your account, determine the host name associated with your account, your username, and your password. This information will need to be entered into the Cradlepoint router.

Part 2: Configuring the Cradlepoint Router

To enter the dynamic DNS account information into your Series 3 Cradlepoint, follow these directions:

  • Step 1: Log into the router's NCOS Page. For help with logging in please click here.
    • Step 2: Click the Networking tab to the left, then select DNS Servers in the drop-down menu.

User-added image

  • Step 3: Scroll down to the Dynamic DNS Configuration section, place a checkmark next to Enable Dynamic DNS.


  • Step 4: Set the Server Type to match your dynamic DNS service provider.
    • Note: If your provider is not on the list, use Custom Server (DynDNS clone) instead. You may need to contact the provider to find out which server address to use.
  • Step 5: Set the Host name, User name, and password obtained in Part 1 of this guide, then reenter your password for verification.

  • Step 6: Click Save to save your changes.


After making this change, any user trying to connect to “” will be redirected to whichever WAN IP address that the Cradlepoint is currently using. If this address changes, the Cradlepoint will automatically let the dynamic DNS provider know, and the hostname will be updated to reflect the new IP address.


If you are having trouble with the dynamic DNS service, contact your provider to find out whether HTTPS must be disabled, update period needs to be changed, or an external IP override has to be provided.


Keep in mind that dynamic DNS generally works best if the Internet Service Provider assigns a publicly routable IP address. If the assigned IP address is a private (or NATed), router services like remote administration, port forwarding, and some VPN's will not work, even with dynamic DNS configured. Click here for instructions for determining whether you have a private or a public IP address. If you have a private IP address, you will need to contact your ISP to have a new IP address assigned that is publicly routable.

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Published Date: 07/14/2017

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