Browser Mozilla Firefox URL Whitelist and Blacklist

Browser Mozilla Firefox URL Whitelist and Blacklist. #MC-KB24

Written by Fernando

Last published at: August 18th, 2023

 

In case you want to use the "Mozilla Firefox" browser to restrict access to websites, please follow the below steps.

  • In the profile go to Computer Settings | Additional Registry Values
  • Add the link you want to "Allow" or "Deny"

 

To "Block" all URL's within "Mozilla Firefox" use the following registry key:

Registry Location:  HKEY_LOCAL_MACHINE
Registry Key SOFTWARE\Policies\Mozilla\Firefox\WebsiteFilter\Block
Value Name  1
Value Type REG_SZ
Value Data *://*/*

 

 

To "Allow" URL use the following registry key:

Registry Location:  HKEY_LOCAL_MACHINE
Registry Key SOFTWARE\Policies\Mozilla\Firefox\WebsiteFilter\Exceptions
Value Name  1
Value Type REG_SZ
Value Data https://domain.com/

 

    Note: if the website uses HTTP or HTTPS, you can specify with the following: *://domain.com/

 

Multiple links can be allowed by adding another registry key:

 

To "Block" file access within "Mozilla Firefox" use the following registry key:

Registry Location:  HKEY_LOCAL_MACHINE
Registry Key SOFTWARE\Policies\Mozilla\Firefox\WebsiteFilter\Block
Value Name  1
Value Type REG_SZ
Value Data file:///*/