Bug ID 997429: When (DoS Detection threshold = DoS Mitigation threshold) for a vector, logging is erratic when hardware offload is enabled

Last Modified: Jan 20, 2023

Bug Tracker

Affected Product:  See more info
BIG-IP AFM(all modules)

Known Affected Versions:
15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3

Opened: Feb 25, 2021
Severity: 3-Major

Symptoms

Some DoS-related log messages may be missing

Impact

Applications dependent on log frequency may be impacted.

Conditions

-- Static DDoS vector is configured with the same mitigation threshold and detection threshold setpoint. -- The platform supports Hardware DDoS mitigation and hardware mitigation and hardware mitigation is not disabled.

Workaround

Configure the mitigation limit about 10% over the attack limit.

Fix Information

None

Behavior Change