Technical Note: Application Server CPU Spiking with HTTP Firewall Enabled

[FortiKoala]

Description

Application Server CPU Spiking with HTTP Firewall Enabled

Scope
Version: 7.x
Solution

Version: 7.x

Issue: Dashboard reporting CPU repeatedly spikes on the application server to 80-90%.

Dashboard (which refreshes every 30 sec) They see the following cycle for the primary application server:

Workaround: Disable HTTP Rate Limiting feature:

- Navigate to System > Settings > Security Folder > HTTP Rate Limiting

- Highlight the Appliance

- Click the "HTTP Rate Limiting: Disable" button.

Solution: The Settings for the HTTP Rate Limiting firewall will be removed as of version 7.3.