How to change the DNS settings on a Adtran NetVanta 2100 router

This page shows how to change the DNS settings on the Adtran NetVanta 2100 router.

Other Adtran NetVanta 2100 Guides

What is the DNS setting on a Router

When you connect a router to the Internet it gets a few settings from your ISP automatically. One of the settings that the ISP sets in your router is the DNS setting. DNS stands for Domain Name System and it is used to convert Internet names into actual IP addresses. For instance, when you go to "", your are really connecting to an IP address that is mapped through DNS to a number such as:

This mapping happens automatically every time you visit any page on the Internet.

Why Change Your Router's DNS Setting

Some ISPs choose to abuse the DNS system and map unknown names to servers that they control. This can be done in a way that you don't know it is happening since your router is getting its DNS settings from your ISP. For instance, if you have one of these ISPs who is hijacking your DNS, and you try to surf the web to "" and "" does not exist, you might get a page back from your ISP with local advertisements on it.

By changing your DNS setting in your router you will effectively change the DNS setting for every computer on your network. This is because when a device is connected to your network your router automatically hands out its own DNS settings to that device. This way you can protect your entire network from ISP hijacking with just one setting.

What Should I Change My DNS To

There are 2 really great DNS servers on the Internet that you can choose from right now: Google Public DNS and OpenDNS. If you are not sure which one to pick then just use Google Public DNS.

When you change the DNS settings in your router, you usually have to enter a Primary and a Secondary setting. The secondary is only used if the primary can not be located. Here are common settings:

If you want to use Google Public DNS, use the following settings:

If you want to use OpenDNS, use the following settings:

Login To The Adtran NetVanta 2100

To get started configuring the Adtran NetVanta 2100 DNS page you need to login to your router. If you are already logged in you can skip this step.

To login to the Adtran NetVanta 2100, follow our Adtran NetVanta 2100 Login Guide.

Change the DNS settings on a Adtran NetVanta 2100

If you followed our login guide above then you should see this screen.

To change the DNS Server, or Domain Name System, on the Adtran NetVanta 2100 you first need to click the choice underneath System labeled Hostname/DNS.

Configure the DNS section of your Adtran NetVanta 2100

This takes you to the page you see above. In the box labeled Hostname type the word local in it.

Below this is the Domain, you can leave this blank or enter the word local.

The next box is called Primary DNS IP Address. Enter the primary address of the DNS server you have chosen for your network.

After that is the Secondary DNS IP Address, enter the secondary address of that DNS server.

Enable DNS Lookup, and Enable DNS Proxy should both be checked.

Click the Apply button if you are happy with your changes.

You're done!

Possible Problems when Changing your DNS settings

Most devices on your network will not begin using the new DNS settings until they have been rebooted. After rebooting a device you can go to it's network settings and verify that it is using the DNS servers that you specified.

Other Adtran NetVanta 2100 Info

Don't forget about our other Adtran NetVanta 2100 info that you might be interested in.

Rachel Bauer

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Rachel Bauer is an owner and primary author for She is available on Google+ and you can find more of her articles in the Networking section of our site.