Your IP on your computer is protected by your ISP so not sure what your trying to accomplish here.

What kind of internal IPs do you mean?

''nousdeux [[#question-1247751|said]]'' <blockquote> How to hide internal IPs in Mozilla Firefox </blockquote> Hello nousdeux, You could consider to disable WebRTC to avoid internal IP address leakage : Type in the address bar '''about:config''' and press Enter (promise to be careful, if asked) Type in the search bar : '''media.peerconnection.enabled''' And set its value to '''false''' Then close and restart Firefox. Note: Turning of WebRTC means that services and applications that make use of it, won't work anymore. Also see : https://www.ghacks.net/2015/01/27/sites-may-detect-the-local-ip-address-in-browsers-supporting-webrtc/ And : https://bugzilla.mozilla.org/show_bug.cgi?id=1466148 -------------------------------------------------------------------------------------------------------------- In case you need some extra information about internal and external IPs : https://stevessmarthomeguide.com/internal-external-ip-addresses/