How to Block Public DNS on LINKSYS and CISCO ( New Interface ) Routers

Log in to your Router

  1.  Type http://192.168.1.1 into the web browser address bar (also try http://192.168.0.1 or http://192.168.2.1)
  2. Enter router username and password. The default username & password is usually admin for both.

Add Static Routes

  1. Under ‘Connectivity’ select ‘Advanced Routing’
  2. Add the following to the Static Routing list :
  • Route Name: Google
  • Destination IP: 8.8.8.8
  • Subnet Mask: 255.255.255.0
  • Gateway: 1.1.1.1
  • Interface:WAN or LAN & Wireless
  1. Click on ‘Save Settings’
  2. Repeat number 2 and 3 under ADD STATIC ROUTES for the following routes for different hosts:
  • Route Name: OpenDNS
  • Destination IP: 208.67.222.222
  • Subnet Mask: 255.255.255.0
  • Gateway: 1.1.1.1
  • Interface:WAN or LAN & Wireless

 

  • Route Name: Level3
  • Destination IP: 209.244.0.3
  • Subnet Mask: 255.255.255.0
  • Gateway: 1.1.1.1
  • Interface:WAN or LAN & Wireless
  1. Click on ‘Apply’ button

PING TEST

  1. Open the Command Prompt or Terminal
  • For Windows: Press the Windows Key AND the R Key at the same time on your keyboard. Type in cmd and press Enter.
  • For Mac OSX: In the upper right corner of your screen, where the search function is, type in Terminal and open the program.

 

  1. Run the following commands
  • Type in:ping 8.8.8.8
  • Type in:ping 208.67.222.222
  • Type in:ping 209.244.0.3

Note: The ping tests above should not succeed. If any of them provide you with a result, examine your static routes or restart the wireless router and try this step again until the ping don’t succeed. You might also need to use a different gateway IP such as 127.0.0.1 or 192.168.0.253. Basically any inaccessible IP that the wireless router allows should function.

Reboot Device

            Turn off your device and unplug the power cable from the router. Wait for 30 seconds. Plug in router and turn on device