Firewall and Wazuh – Multi-Layered Security

A firewall is the first line of defense against cyberattacks. But in modern networks, it’s no longer enough on its own. With an intelligent monitoring system like Wazuh, you gain deep insight into events, attacks, and vulnerabilities.

1. The Role of the Firewall

Firewalls control data traffic between your internal network and the internet. They decide which connections are allowed or blocked. Modern firewalls – so-called Next Generation Firewalls (NGFW) – can even analyze applications and threats on Layer 7.

• Blocking unwanted IP addresses and ports
• Protection against DoS and brute-force attacks
• Logging and alerting in case of suspicious behavior
• Integration with VPN, IDS/IPS, and cloud services

2. Why Wazuh Does More

Wazuh is an open-source SIEM and XDR platform that goes far beyond traditional firewall capabilities. It monitors servers, clients, and networks in real time and reports any anomalies.

• Analyzes log data from firewalls, Windows events, and Linux syslogs
• Detects malware activity and policy violations
• Integrates with OSSEC, VirusTotal, and MITRE ATT&CK
• Provides dashboards for incident response and audit reports

3. Combining Firewall and Wazuh

The most effective security strategy is to combine both systems:

1. Firewall: Blocks attacks at the network perimeter.
2. Wazuh: Monitors internal activity and detects compromised systems.
3. Together, they form a multi-layered security concept (“Defense in Depth”).

4. Conclusion

Firewalls protect the perimeter; Wazuh watches the inside. Together, they create transparency, control, and security – fully aligned with modern cybersecurity standards. Companies using both technologies minimize risks and respond faster to incidents.

Tip: Complement your setup with regular backups and log analysis to keep your data secure in the long term.