Symptoms

The DoS iRule event is invoked for all requests involved with the virtual server that under attack instead to suspicious entities.

Impact

The event is invoked for all requests involved with the virtual server that under attack this can cause resource consumption overhead.

Conditions

The virtual server is under DoS attack, and the virtual server configuration DoS iRule is enabled with attached iRule IN_DOSL7_ATTACK event.

Workaround

Disable DoS iRule configuration.

Fix Information

We invoke the DoS iRule only on traffic to suspicious entities.

Behavior Change