With the rapid development of information technology, the network is playing a more and more important role in our life and penetrate to every corner of our life, such as responsible for computing and transacting in business industries, and make great contribution for social communication. However, at the same time, more and more network attacks appears and seriously endanger the security of network. Including the threads for wired network and wireless network. In this thesis, we rst talk about network security, including wired network security and wireless security, we discuss the current threads and attacks we face for the wired network and wireless network, then we introduced the current solution for these threads and attacks.At last,we demonstrate the whole process of session cookie hijacking by manually perform it.We proposed our solution which called random cookie protocol, and we did experiments to compare the performance with HTTP.
