Linux is highly secure, but you should still have a firewall. You should know if your ISP's hardware (gateway) uses a firewall. One of the easiest Linux firewalls is UFW and its GUI sidekick, GUFW.
Adam Stone writes on technology trends from Annapolis, Md., with a focus on government IT, military and first-responder technologies. Firewalls are a key part of the overall security posture in higher ...
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