# Activating deep inspection in Access rules

Action options in the Access rules define which traffic is inspected against the Inspection Policy.

Typically, you introduce deep inspection after creating and testing initial Access rules. You must specifically activate deep inspection for the portion of traffic that you want to deep inspect. This activation is done in the Access rules. You also select which Inspection Policy element is used for deep inspection on the Inspection tab of the Engine, IPS, or Layer 2 Engine policy.