To do so, it allows or blocks specific data packets or communication units through the digital network because the firewall applies the pre-configured security rules. It only accepts the connections that are configured to accept by the configured rules. How Does Firewall Works?Įvery firewall has some rule to analyze the network traffic. The firewall of a computer device or network acts as a gatekeeper, monitors access to the operating system to avoid unwanted and unrecognized traffic. Also, it helps a user to keep away malicious software or program (virus, malware, Trojans, worms, ransomware, spyware) from infecting a computer or device. A firewall is a kind of security device that protects a network system by filtering traffic and blocking unauthorized access.
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