The Internet of Things (IoT) will enable a range of applications providing enhanced awareness and control of the physical environment. The success of the IoT world requires service provision attributed with ubiquity, reliability, high-performance, efficiency, and scalability. Virtually interconnected objects with unique identifiers and computing, communication and sensing functionalities form the Internet of Things (IoT) architecture.

The term Internet of Things (IoT) also refers to the use of standard internet protocols for interaction between human to things or things to things in an embedded network. Although the security needs are well-recognized, it is still not fully clear how existing IP-based security protocols can be applied to this new setting. In this paper we discuss the various security challenges in an IoT system. The paper also provides a standard IP-based security protocols and its implementation model which can be used as a security system for IoT.