What are the functions of Firewall?

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Firewall is a security system used to protect computer networks from security threats and cyber attacks. The firewall monitors and controls the movement of data traffic between the protected network and external networks, based on a set of policies and rules that are configured. Here are some of the functions of the firewall device:

         The firewall determines whether data should be allowed or blocked based on the specified rules.

         Separates trusted and untrusted data traffic.

         It analyzes incoming and outgoing data packets according to a set of rules and policies.

         A firewall prevents access to resources and services within a network by unauthorized individuals or systems.

         A firewall can be used to verify the identity of users or systems before allowing access.

         The firewall records events and updates to enable incident analysis and tracking of unauthorized activity.

     Threat monitoring (Intrusion Detection and Prevention):

         Some firewall systems can include functionality to detect and prevent intrusion.

         A firewall can regulate bandwidth usage to improve network performance.

     Communications encryption (VPN Support):

         Some of them support the ability to establish secure connections via a virtual private network (VPN).

A firewall is an essential part of a network security strategy and helps protect systems and data from external threats.

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