About Lesson
Firewalls are security devices or software that monitor and control incoming and outgoing network traffic based on predetermined security rules.
Traditional Firewalls:
Focus on filtering traffic based on IP addresses, ports, and protocols.
Next-Generation Firewalls (NGFW):
Integrate advanced features like application awareness, intrusion prevention, and deep packet inspection.
Examples: Check Point, Fortinet, and Palo Alto Networks.
Firewalls are a fundamental component of network security, acting as the first line of defense against unauthorized access.