Are things such as Chromium addons and UFW Firewall settings automatically set for all users and future users on Linux distributions ?
closed as unclear what you're asking by tripleee, Jeff Schaller♦, Anthony Geoghegan, Michael Homer, DarkHeart Apr 24 '17 at 5:27
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The firewall, and more generally the network configuration, is a system setting. It applies to all users. Creating new user accounts doesn't change the system settings (apart from the accounts, of course).
Note that a web proxy setting is a user setting, because it's applied by each browser, not by the system.
Chromium add-ons are installed as part of a Chromium profile (the same goes for other browsers: Chrome, Firefox, etc.). Each user has their own browser profile (and you can even create multiple profiles on your account). It's possible to install system-wide add-ons, but rarely done except in some enterprise setups.