Assertion: personal firewall | /r/HasProperty | individual computer
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Source sentences:
text: The traditional firewall was a fairly simple construct: it sat between the LAN (or in the case of personal firewalls, an individual computer) and the “outside world” of the Internet, and filtered packets coming in – and in some cases, going out – based on information in the Layer 3 and 4 headers (IP, TCP, UDP, ICMP).