Network security device that monitors and controls traffic based on defined security rules.
A firewall monitors and controls network traffic based on predetermined security rules, creating a barrier between trusted internal networks and untrusted external networks. Traditional firewalls filter traffic by IP address, port, and protocol. Modern next-generation firewalls (NGFW) add application awareness, intrusion prevention, and threat intelligence. Firewalls are fundamental network security, controlling what enters and leaves your network.
Why It Matters
The DSC Perspective:
Firewalls are your network perimeter defence. Ensure yours is properly configured, regularly updated, and provides modern capabilities like application awareness and intrusion prevention.