The Role Of A Firewall

As a security system, firewalls serve as a barrier between trusted and untrusted networks. In this capacity, they control the flow of traffic between the two, using a set of rules or policies to allow or block specific types of traffic. For instance, a corporate firewall might permit traffic from an employee while blocking traffic from a hacker.

Beyond controlling traffic, firewalls can also feature security measures such as intrusion detection and prevention to identify and halt malicious traffic or attacks. These added security features help protect networks from viruses, malware, and other threats that could compromise network security or cause damage.

In short, firewalls serve as a first line of defense for networks, safeguarding against unauthorized access and attacks. By utilizing a firewall, organizations can help secure their networks and data.