header-firefoxMany Firefox users would have come across errors like “This address uses a network port which is normally used for purposes other than Web browsing. Firefox has cancelled the request for your protection.

Here is the solution for the above issue.

  • open firefox
  • Type “about:config” in the address bar
  • Right click anywhere on the screen & click new > string
  • Enter preference name as: network.security.ports.banned.override
  • Enter string value as: 87(can be any port number which you want to access)

That’s it. You are done.