Firewall

securityintermediate
network securityprotectiontraffic filtering

A network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

Examples

Router firewall

Built-in firewall blocks unsolicited incoming connections

Windows Firewall

Software firewall protecting individual computer

Optimization Tips

Keep firewall enabled but configure exceptions for games/apps

high impact

Review firewall logs periodically

low impact

User Impact

Security

Protects against unauthorized access and malware

Gaming/Apps

May need port forwarding for some services