In Dungeons and Dragons, a fire wall is a wall of fire create by a magic user as a defensive measure that can also cause damage. In software, a firewall is essential protection for your operating system. In the world of dining, a raspberry pie is a tasty fruit-filled pastry. In the world of Adafruit, we’re a done with this bit! Here’s an article on installing a firewall on your Raspberry Pi, via Pi My Life Up:
Setting up a firewall on your Raspberry Pi helps protect a bad actor from potentially causing issues on your device or accessing services you don’t want to be accessed.
Most Linux operating systems, such as Raspberry Pi OS, already have a firewall built into the kernel. This is controlled by the somewhat complicated nftables. Nftables allows complicated firewall routing, but for most users, it can be a bit daunting.
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