How Does a Firewall Work Step by Step
17 days ago
- #firewall
- #cybersecurity
- #network-security
- A firewall acts as a gatekeeper, monitoring and controlling data entering and exiting a network.
- Firewalls inspect data packets and decide whether to allow or block them based on predefined rules.
- Main functions include traffic monitoring, access control, threat protection, and logging/reporting.
- Types of firewalls include packet-filtering, stateful inspection, next-generation, and proxy firewalls.
- Step-by-step process: client request → packet travels → firewall inspection → filtering → stateful analysis → forwarding → server response.
- Advanced capabilities include application-layer filtering, intrusion prevention, anomaly detection, and content filtering.
- Firewalls prevent unauthorized access, block malware, ensure compliance, and provide security visibility.
- Essential for both personal and corporate cybersecurity strategies.