Using the Cisco Umbrella public DNS servers
This article describes some of the scenarios that most people typically encounter when first switching their DNS from their current internet service provider (ISP) to Cisco Umbrella. In most cases, the IP addresses used by your ISP's domain name servers (DNS servers) are automatically set by your ISP through DHCP.
To switch to Umbrella, you need to explicitly change the DNS settings in your operating system or hardware firewall/router to use IP addresses of the Umbrella name servers and turn off the automatic DNS servers provided by your ISP.
The process for changing your DNS settings varies according to operating system and version (Windows, Mac or Linux) or the device (DNS server, router, or mobile device). We give general procedures here that might not apply for your OS or device; please consult your vendor documentation for authoritative information.
Single computers (laptops)
If you need to move an individual computer, especially 'roaming' computers such as laptops, to Umbrella we recommend installing the Umbrella roaming client.
Important: Before making any changes
Before you change your DNS settings to use Cisco Umbrella, be sure to write down the current server addresses or settings on a piece of paper. It is very important that you keep these numbers for backup purposes—just in case you need to revert to them at a later date.
Umbrella IP addresses
The Umbrella IP addresses (IPv4) are:
You can use either number as your primary or secondary DNS server, but please use both numbers and not the same IP address twice. If your router requires a third or fourth DNS server setting, please use 188.8.131.52 and 184.108.40.206 as the third and fourth entry respectively.
Changing your DNS server settings
- Because the instructions differ between different versions/releases of each operating system, we are only providing general guidance and single examples. If you need specific instructions for your operating system/version, please check the website of the manufacturer or view instructions on our Router Configuration, Computer Configuration, Mobile Device Configuration, or Server Configuration guides.
- Several systems allow you to specify multiple DNS servers. We recommend that you only use the Cisco Umbrella servers and do not include any other DNS servers in the list.
Every router uses a different user interface for configuring DNS server settings; we can only provide a generic procedure below as there are too many different router models and configurations to take into account. For more explicit information on how best to configure the make and model of the router on your network with this information, please consult your router documentation.
To change your settings on a typical router:
- In your browser, enter the IP address to access the router's user interface and enter your password.
- Find the area of configuration in which DNS server settings are specified.
- Replace those addresses with the Umbrella IP addresses:
- Save your changes and exit the user interface for your router.
- Flush your DNS cache.
- Test that your setup is working correctly; see "Testing your new settings" below.
Testing your new settings
To test that your Umbrella settings are now working, try these basic steps:
- From your browser, type in a hostname (such as http://www.cisco.com). If this works correctly, try going to http://welcome.opendns.com. You should see this success message:
If you have trouble getting websites to load or reaching the Welcome page above, try the following:
- From your browser, type in a fixed IP address in the address bar. Try entering: http://220.127.116.11/ (which points to the website http://www.eecs.mit.edu/) as the URL. If these tests work but you can't reach the Cisco Umbrella Welcome screen, then there is a problem with your DNS configuration; check the steps above to make sure you have configured everything correctly. If these tests do not work, go to step 2.
- Roll back the DNS changes you made and run the tests again. If the tests still do not work, then there is a problem with your network settings or your Internet service provider.
- Contact Support from the Support tab in your Umbrella dashboard, or by clicking here: https://support.umbrella.com/tickets/new