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How to change the DNS settings on a ZyXEL ZyWALL Z 70 UTM router

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Setup Router Staff
(Last Updated: ) | Reading Time: 4 minutes
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This is the device image of your ZyXEL ZyWALL Z 70 UTM router.

This page shows how to change the DNS settings on the ZyXEL ZyWALL Z 70 UTM router.

Other ZyXEL ZyWALL Z 70 UTM Guides

This is the dns guide for the ZyXEL ZyWALL Z 70 UTM. We also have the following guides for the same router:

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 "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:

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 ZyXEL ZyWALL Z 70 UTM

To get started configuring the ZyXEL ZyWALL Z 70 UTM DNS page you need to login to your router. If you are already logged in you can skip this step.

To login to the ZyXEL ZyWALL Z 70 UTM, follow our ZyXEL ZyWALL Z 70 UTM Login Guide.

Change the DNS settings on a ZyXEL ZyWALL Z 70 UTM

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 ZyXEL ZyWALL Z 70 UTM router.

From the System Information page of the ZyXEL ZyWALL-Z-70-UTM, click the link in the left sidebar, in blue, labeled Advanced. Then under that, pick LAN. There are now four different choices at the top of this new page, pick DHCP.

Configure the DNS section of your ZyXEL ZyWALL Z 70 UTM

router DHCP lan mac address binding internet settings
This is the dhcp page from your ZyXEL ZyWALL Z 70 UTM router.
  • First, leave the Selected Interface at LAN.
  • In the First DNS Server drop down menu, choose User-Defined.
  • You can now enter the primary DNS server address of your choice in the boxes labeled IP.
  • Again, choose User-Defined in the drop down menu to the right of the words Second DNS Server.
  • Enter the secondary DNS server address in the boxes to the right.
  • If you know a third address, go ahead and enter that in the Third DNS server space.
  • Click Apply.

That's it!

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 ZyXEL ZyWALL Z 70 UTM Info

Don't forget about our other ZyXEL ZyWALL Z 70 UTM info that you might be interested in.

This is the dns guide for the ZyXEL ZyWALL Z 70 UTM. We also have the following guides for the same router: