Bug ID 948241: Count Stateful anomalies based only on Device ID

Last Modified: Jan 19, 2023

Bug Tracker

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

Known Affected Versions:
14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5,, 15.1.6, 16.1.0, 16.1.1, 16.1.2,,, 16.1.3, 17.0.0

Fixed In:,,,

Opened: Sep 24, 2020
Severity: 4-Minor


Currently when Device ID is enabled, the BIG-IP system counts stateful anomalies on both IP and Device ID. When a client has a proxy (without XFF), and many requests arrive with the same IP, this can cause false positives


False positives may occur in case of a proxy without XFF


- Bot Defense profile is attached to a virtual server. - Bot Defense profile has "Browser Verification" set to "Verify After Access" or "Device ID Mode" set to "Generate After Access".



Fix Information

Stateful anomalies are no longer counted on IP when Device ID is enabled

Behavior Change