Internet of Things is new emerging technology based on the combination of embedded systems,internet and cloud computing. Internet of things is new emerging technology that will help to ease many complicated issues of our day to day life. It can help mankind in many ways. This survey analyzes existing protocols as well as various mechanisms to have secure communications in the IoT. We analyze how current approaches ensure and guarantee fundamental and basic security requirements and protect communications on the IoT,together with the strategies and open challenges for future work research and development in this area. This is,as far as our knowledge goes,the first survey with such goals to ensure privacy to end-user that are using this technique of Internet of Things. © 2016,International Journal of Pharmacy and Technology. All rights reserved.