Security is the utmost importance for the safe operation of the Internet of Things (IoT) devices. Behind IoT, a sensor network operates. Hence, security and lifetime extensions of the sensor networks are the primary concern. Node clustering is a technique to lengthen the lifetime of sensor networks. In a clustering technique, Cluster Heads (CH) are chosen. To provide the security to the sensor network, reliable CHs are elected. In this article, a protocol is proposed which elects reliable CHs based on node features such as residual energy, distance to the sink and node behavior such as the number of packets transmitted and received successfully, data consistency factor. The simulation results obtained prove that the proposed protocol performs better.