> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://helpdesk.safesurfer.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Use Safe Surfer via secure DNS on Firefox

It’s easy with Safe Surfer to block harmful online content on a Firefox web browser.

| Before we get started, we recommend that you consider using one of our system-wide installation methods instead. Protection installed within the Firefox web browser can be turned off, and other built-in web browsers (for example, Microsoft Edge or Samsung Internet) would otherwise not be protected. Click the links below to view our installation guides for [Android](https://helpdesk.safesurfer.io/en-nz/article/protect-an-android-device-with-safe-surfer-1d7pmt5/), [iPhone, iPad, and iPod](https://helpdesk.safesurfer.io/en-nz/article/protect-an-iphone-ipad-or-ipod-with-safe-surfer-1ao7qmo/), [Windows 11](https://helpdesk.safesurfer.io/en-nz/article/protect-a-windows-11-device-with-safe-surfer-17gqb37/), and [Apple Mac](https://helpdesk.safesurfer.io/en-nz/article/protect-a-mac-device-with-safe-surfer-1hle1v/).

# Step 1: Install protection

Click the Firefox app.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-1_1956p07.png)

Click the menu button at the upper-right corner, then click the Settings menu.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-2_i546yk.png)

Click the Privacy & Security menu on the left-hand sidebar.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-3_15vysb3.png)

Scroll down to the DNS over HTTPS section. Under “Enable secure DNS”, click the Max Protection option. Click the drop-down box and select Custom.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-4_1v29fib.png)

Open a new tab and visit the [Safe Surfer dashboard](https://my.safesurfer.io). Click the Devices menu on the left-hand sidebar, then click the “+ New Device” button.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-5_2gziz1.png)

Click “This device”.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-6_c0462i.png)

Click Firefox.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-7_7g4ygq.png)

Enter a name for this device listing, then click the Accept button.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-8_qcdv8w.png)

Click the Copy button found next to the protection link.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-9_1xwvfau.png)

Once you’ve copied the protection link, click the Blocking menu on the left-hand sidebar. Click the blue bubble list, then click the device listing for the Firefox browser.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-10_63qefr.png)

Click the switches to either block or unblock categories—grey means not blocked, and red means blocked. Once you’re done, click the Save button at the upper-right corner. You might need to scroll to the top of the list for the Save button to appear.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-11_1nthcn1.png)

Click the three-dot icon found at the upper-right corner of the Safe Surfer dashboard, then click the Log Out button.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-12_807m5z.png)

Back on the Settings tab, paste the link into the provider text box.

![](https://storage.crisp.chat/users/helpdesk/website/f8920d476a21b000/safesurfer-firefox-2023-13_zg5lwj.png)

# Step 2: Verify protection

| You can verify the protection installation for this browser app by visiting our [protection check guide](https://helpdesk.safesurfer.io/en-nz/article/how-to-check-if-a-device-is-being-monitored-and-protected-with-safe-surfer-ytnj3i/). Once you've done this, you can return to this guide.

# Protection complete

Great work! This Firefox web browser is now protected. To start monitoring protected devices, visit our easy-to-use [online dashboard](https://my.safesurfer.io).

If you have any other Firefox browsers you would like to protect, simply start again from the top of the guide. If you would like to protect a different kind of device, visit our [installation guides article](https://helpdesk.safesurfer.io/en-nz/article/windows-full-installation-guides-1rtaor8/).