this post was submitted on 27 Sep 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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You've got it backwards. A firewall blocks everything, then you open up the ports you want to use. A standard config would allow everything going out, and block everything coming in (unless you initiated that connection, then it is allowed).
So the question you should be asking, is what services do you think you're going to be running on your desktop that you plan to allow anyone on the internet to get to?
Not entirely clear but perhaps OP is talking about blocking unwanted outgoing reqjests? E.g. anti-features and such since they mention traffic from their apps.
Possibly? The way I read it, it sounded like OP wasn't really even sure what a firewall does.