The network layer sets up logical connection for transmitting data from node to node using switching and routing technologies. It also manages error handling, congestion control and packet sequencing. Internet Protocol (IP) is the most popular protocol associated with the network layer, which allows host to host communication. The network layer security ensures that data carried by all IP datagram were encrypted before it is launched into the network and is totally transparent to the underlying application.
15.1 IP SECURITY
IP was formulated in the late 1970s as part of Defense Advanced Research Projects Agency (DARPA) Internet project, in which the network was not large became and all the users were familiar and hence ...