Thesis (M.Sc.) - Cairo University - Faculty of Computers and Information - Department of Information Technology

With the introduction of networks and communication systems , the security on the transmitted data between terminals becomes an important topicInternet Protocol Layer (IP Layer) is the layer that responsible of routing the data through multiple networksData transmission on IP layer has three forms : unicast transmission , broadcast transmission , and multicast transmissionIn unicast transmission , data are sourced from one sender and transmitted to one receiverIn broadcast transmission , data are sourced from one sender to all receiversIn multicast transmission , data are sourced from one sender to a specific group of receiversBroadcast transmission is considered a special case of multicast transmission where the group of receivers are all the receivers of the networkMost security mechanisms are mainly applied on unicast transmissionMost multicast applications (like , Computer supported Co - operative Work , Audio and video distribution , and distributed database) require strong multicast Security mechanisms

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