firefox-security-settings

Firefox security hardening via system wide locked preferences

Configurations aggregated from these sources:

• https://vikingvpn.com/cybersecurity-wiki/browser-security/guide-hardening-mozilla-firefox-for-privacy-and-security
• https://web.archive.org/web/20160606093146/https://vox.space/blog/98/mozilla-firefox-security (archived)
• https://www.privacytools.io/#browser

Installation (system-wide configuration)

1. Clone the repository
2. Copy files

• local-settings.js -> /usr/lib/firefox/defaults/pref/
• mozilla.cfg -> /usr/lib/firefox/

3. Re/start Firefox
4. Visit about:config, locked preferences will be shown in italic

Alternatives

If you want a more comprehensive solution, check this repository from @pyllyukko https://github.com/pyllyukko/user.js