The phrase “Linux doesn’t need a firewall” is commonly voiced. And it’s true, in the sense that your desktop distribution will work just fine without one. The same is true for Windows, up to a point, yet it still ships with one enabled by default. And any hardened user of the Redmond-ian OS would frown at you if you turned it off without good reason. Why? Because it takes away a layer of security that probably wasn’t doing any harm in the first place.
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