---
title: OpenWRT
description: 
---

> These instructions may vary based on the OpenWRT version you use.

AUTOMATIC_TABLE_OF_CONTENTS

## Block Google DNS on OpenWRT

* Open the OpenWRT settings page and navigate to: **Network** > **Firewall** > **Traffic Rules**.
* Under **New forward rule** enter **DNS** as the name, choose source zone **lan**, destination zone **wan** and click **Add and edit..**
* Enter the following information:
 * Name: **DNS**
 * Restrict to address family: **IPv4**
 * Protocol: **TCP+UDP**
 * Match ICMP type: **any**
 * Source zone: **lan**
 * Source MAC address: **any**
 * Source address: **any**
 * Source port:
 * Destination zone: **wan**
 * Destination address: choose Custom and enter **8.8.8.8**
 * Action: **Reject**
 * Extra arguments:
 * You'll end up with something like this:
 ![](/media/69/Screen-Shot-2015-09-19-at-23.55.17.png)
 * Click **Save & Apply**.
* Repeat the same steps for Destination address: **8.8.4.4**.
* Click **Save & Apply** once more on the **Firewall - Traffic Rules** page.

## Power-cycle your devices

To make sure all your devices use the new DNS settings, please follow these steps:

* Turn off the device.
* Unplug the power cable from the router.
* Wait 30 seconds.
* Plug the power cable back in.
* Turn the device back on.

## Test your Google DNS block

We recommend that you verify the block by trying to ping Google's DNS servers.

* On Windows, please open a **Command Prompt**.
On OS/X, open a **Terminal** instead.
* Enter the following command in the Command Prompt or Terminal:
```ping 8.8.8.8```
This will send a series of pings to the Google DNS server. If they all **fail**, your block is working properly.
* Repeat the test for 8.8.4.4:
```ping 8.8.4.4```