A firewall is a network security device that monitors and filters incoming and outgoing network traffic based on previously established security policies in an organization. A firewall, at its most basic, is a barrier that sits between a private internal network and the public Internet.
A Network Security Firewall manages network traffic by limiting the entry of threats across networks. The main advantage of network security firewalls is that they improve network security by protecting it from various threats such as botnets, command and control servers, advanced persistent threats (APTs), and zero-day threats. Network security is one of the most important concerns for organizations in order to minimize data security issues.
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