What is a Firewall and Why It Matters in Cybersecurity

A firewall is a security system that monitors and controls incoming and outgoing network traffic. It acts as a barrier between trusted and untrusted networks.

How a Firewall Works

A firewall checks data packets and decides whether to allow or block them based on security rules. It helps prevent unauthorized access to your system.

Types of Firewalls

• Software Firewall: Installed on individual devices
• Hardware Firewall: Built into routers or network systems
• Cloud Firewall: Managed through cloud services

Why Firewalls Are Important

• Block unauthorized access attempts
• Protect against cyber attacks
• Monitor network traffic
• Improve overall system security