Managing security indicators is an excellent practice for maintaining a robust security posture, especially when you're responsible for firewall administration. These indicators can help you quantify the effectiveness of your security measures and identify areas for improvement.
Monitor the amount of inbound and outbound traffic. Anomalies could indicate a security incident.
Blocked Connections: Track the number of connections that the firewall has blocked, categorized by reason for blocking
Allowed Connections: Monitor the number and types of connections that are allowed, especially from outside the network.
Threat Detection: Number of detected threats like malware, intrusions, or data exfiltration attempts.
Configuration Changes: Track any changes made to the firewall configuration, who made them, and why.
System Health: CPU usage, memory usage, and other performance metrics can also be important indicators.
Incident Response Time: Measure how long it takes to respond to and mitigate security incidents detected by the firewall.
False Positives/Negatives: Track these as they can indicate the effectiveness of your security policies.
Focus on real-time indicators like traffic volume, blocked connections, and system health. Investigate any immediate anomalies. Look at trends in the data. Are the number of blocked connections going up? Are you seeing new types of threats? Review any configuration changes made during the week. y regularly reviewing these indicators and adjusting your security policies accordingly, you can greatly improve the effectiveness of your firewall and your overall security posture.
The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.