The wireless sensor network is an networking field that combines sensing, computation, and communication into a single tiny device. As sensor networks frame closer towards well-known deployment, security issues become a vital concern. So far, much work has focused on making sensor networks realistic and useful, but still security in sensor network data communication is big issue for research. This paper proposed the idea of having different Kerberos authentication architecture for the different clusters in sensor network to save energy factor of the sensor nodes and to save time for data communication between the sensor nodes in the network.