Firewall
A network security device or software that monitors and controls incoming and outgoing network traffic based on defined rules.
What is Firewall?
What is Firewall?
Firewalls act as a barrier between trusted and untrusted networks. They inspect network traffic and apply rules to allow or block connections. Types include network firewalls (hardware appliances), host-based firewalls (software on individual machines), and web application firewalls (WAFs) that inspect HTTP traffic for attacks. Modern next-generation firewalls (NGFWs) combine traditional firewall capabilities with intrusion prevention, application awareness, and deep packet inspection.
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