Applying an aggressive IPS profile without prior testing can disrupt legitimate applications by incorrectly identifying normal traffic as malicious. To prevent disruptions while still monitoring for threats:
Enable IPS in "Monitor Mode" first:
This allows FortiGate to log and analyze potential threats without actively blocking traffic.
Administrators can review logs and fine-tune IPS signatures to minimize false positives before switching to blocking mode.
Verify and adjust signature patterns:
Some signatures might trigger unnecessary blocks for legitimate application traffic. By analyzing logs, administrators can disable or modify specific rules causing false positives.