Change parameters in firefox for better privacy and add some personnal conf.
When you open firefox, by default, it connects to :
nb DNS request : domain
1 : www.mozilla.org.
1 : snippets.cdn.mozilla.net.
1 : location.services.mozilla.com.
3 : ff.search.yahoo.com.
1 : ocsp.digicert.com.
1 : geo.mozilla.org.
3 : search.yahoo.com.
1 : self-repair.mozilla.org.
1 : ciscobinary.openh264.org.
1 : clients1.google.com.
1 : search.services.mozilla.com.
1 : safebrowsing.google.com.
1 : aus4.mozilla.org.
53 : safebrowsing-cache.google.com.
See -> https://www.ecirtam.net/links/?40QYwg (French)
So how to fix it ?
1- Read https://raw.githubusercontent.com/Oros42/firefox_change_prefs/master/user.js
2- Put user.js in your firefox profile's folder (/home/user/.mozilla/firefox/xxxxxxx.default/).
This script removes all google, pocket and mozilla URL who can tracks you.
In the ./old/ directory, you can find an older python script that modifies the prefs.js file.