![]() Pfsense is a brand of firewall and router software that’s free to use and customize as long as you have the right hardware-that is, anything from a specialized router to an old PC you salvaged. being dangerous or coming from a source you blocked, either from the internet or software installed on your device. ![]() ![]() A firewall is a network security system, that monitors, tracks, and controls outgoing and incoming data and network traffic. A firewall is your first line of defense against malicious software and strangers online.ĭepending on your settings, your firewall will intercept network traffic that meets certain criteria, i.e.
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