How does a firewall protect a computer network
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1,111,111 TRP = 11,111 USD
1,111,111 TRP = 11,111 USD
1,111,111 TRP = 11,111 USD
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Traffic Filtering: Firewalls inspect incoming and outgoing data packets based on predefined rules (e.g., IP addresses, ports, protocols). Suspicious or unauthorized traffic is blocked.
Access Control: They enforce policies to allow/deny access to specific services (e.g., blocking external access to sensitive databases).
Stateful Inspection: Modern firewalls track active connections, ensuring only legitimate responses to internal requests pass through.
Threat Prevention: Advanced firewalls integrate intrusion detection/prevention (IDS/IPS) to stop malware, ransomware, or hacking attempts.
Network Segmentation: Firewalls divide networks into zones (e.g., DMZ for public servers), limiting breach impacts.
VPN Support: They secure remote access via encrypted tunnels, ensuring safe data transmission.
Logging & Alerts: Firewalls log traffic patterns and trigger alerts for suspicious activity, aiding incident response.
Application Layer Security: Some analyze application-specific traffic (e.g., HTTP) to block exploits like SQL injection.