How to change the DNS settings on a Linksys WRT120N router

This page shows how to change the DNS settings on the Linksys WRT120N router.

What is the DNS setting on a Router

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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 "google.com", your are really connecting to an IP address that is mapped through DNS to a number such as:

173.194.33.73

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 "some-random-site.com" and "some-random-site.com" 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:

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

Primary: 8.8.8.8
Secondary: 8.8.4.4

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

208.67.222.222
208.67.220.220

Login To The Linksys WRT120N

To get started configuring the Linksys WRT120N DNS page you need to login to your router. If you are already logged in you can skip this step.

To login to the Linksys WRT120N, follow our Linksys WRT120N Login Guide.

Change the DNS settings on a Linksys WRT120N

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

router status mac address internet IP — This is the *status* page from your Linksys WRT120N router.

Beginning on the Status page of your Linksys WRT120N router, click the choice at the top of the router labeled Setup, then Basic Setup directly under that.

Configure the DNS section of your Linksys WRT120N

router setup — This is the *setup* page from your Linksys WRT120N router.

You are now on the correct page to change the Domain Name System, or DNS.

Scroll down the page until you see Static DNS 1. Enter the primary address of the DNS server you wish to use in these boxes. This address is always used first.

The secondary address will only be used when the first can't be found, enter that secondary address in the boxes labeled Static DNS 2.

If you know a third address you would like to use, do so in the Static DNS 3 boxes. You can also leave these boxes blank. This particular address may never be needed.

Once you are done making changes, click the button at the bottom of the page labeled Save Settings.

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.