Athena NGFW High CPU Usage – Troubleshooting Guide
  

Muhammad Abid Lv2Posted Apr-01-2026 12:29

Issue Description:
In Athena Next-Generation Firewall (NGFW), CPU usage may become abnormally high, causing performance degradation, GUI lag, and delayed policy processing.

Common Causes:
High traffic load or DDoS-like activity
Resource-intensive security features (IPS / AV / App Control)
Excessive session creation or log flooding
Abnormal or malicious traffic behavior
Troubleshooting Steps:

✅ Check CPU utilization from Dashboard / CLI
✅ Identify top sessions and applications consuming CPU
✅ Review security policies (IPS / AV / App Control)
✅ Check session table size and spikes
✅ Analyze logs for unusual traffic patterns
✅ Restart specific services if required (avoid full reboot)

Verification:
CPU usage returns to normal range
Firewall performance becomes stable
Policies are applied without delay
Recommendation:
Optimize and fine-tune security policies
Enable protection against abnormal traffic
Perform regular system and traffic monitoring

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