# GRE Protocol Agent

The Generic Routing Encapsulation (GRE) protocol is a tunneling protocol that allows the encapsulation of network layer packets inside IP tunneling packets.

The GRE Protocol Agent provides protocol inspection for tunneled GRE traffic. This Protocol Agent specifies rematching parameters for GRE-encapsulated packets, and defines which traffic is tunneled. This Protocol Agent has parameters that you can set in the Service properties.