dns-blocker

DNS Blocker for Chrome and Firefox (Web Extension)

Installation

Clone this repository
Visit chrome://extensions/
Enable Developer mode.
Click on Load unpacked extension
Select the web-extension directory of the cloned folder. (You'll get an "Disable dev mode extensions" popup, if you try restarting Chrome at this stage)
Click on Pack extension and enter the web-extension directory of the cloned folder (keep pem file empty)
Uninstall the previously installed extension (as unpacked extension)
Install the extension using the .crx file generated at step 5 and note its ID
Add the following registry key
- Under HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome\ExtensionInstallAllowlist (create it if not exists), create a new string for each extension you want to enable with sequential names (indices), e.g. 1, 2,...
- Enter the extension ID as string value. For example: there is a string with name 1 and value nmgnihglilniboicepgjclfiageofdfj
Restart Chrome
You can check that the policy is working in Chrome by opening chrome://policy

In order to override the extension shortcuts : go to chrome://extensions/shortcuts

Clone this repository
Visit about:debugging
click This Firefox
click Load Temporary Add-on then select the any file inside the web-extension directory (At this stage, the extension will be removed if you restart Firefox - The extension must be signed to be installed permanently)
Generate a zip file of the extension
Submit the archive on https://addons.mozilla.org/developers/ (requires a Firefox account)
Download the signed xpi file and install it on Firefox

In order to override the extension shortcuts : go to about:addons and select Manage Extension Shortcuts