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Block Google DNS on Asuswrt-Merlin

A quick guide on how you can block Google DNS servers on your Asuswrt-Merlin router. This is useful to force some devices which have hard-coded Google’s DNS servers to use the ones you have defined.

  1. Log into your router and click on LAN, then click on the Route tab at the top.
  2. Set Enable static routes to Yes.
  3. In the Static Route List enter the following details:
    • Network/Host IP: 8.8.8.8
    • Netmask: 255.255.255.255
    • Gateway: The IP address of your router
    • Metric: 2
    • Interface: LAN
  4. Click on the + icon under the Add/Delete section
  5. Create one more entry for the secondary Google DNS address of 8.8.4.4.
  6. Click on Apply. Your router will now reboot.

Once your router is back online, you can test that Google’s DNS is being block by simply perfroming a ping against 8.8.8.8 or 8.8.4.4 which should return the following:

 

Posted in ASUS, Asuswrt-Merlin, Tech

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