a common way to protect information being sent over a network when long distance is involved is
Computer and network surveillance Computer and network surveillance programs are widespread today and almost all Internet traffic can be monitored.[1]
Computer network The most striking example of an overlay network is the Internet itself. The Internet itself was initially built as an overlay on the telephone network.[18] Even today, each Internet node can communicate with virtually any other through an underlying mesh of sub-networks of wildly different topologies and technologies. Address resolution and routing are the means that allow mapping of a fully connected IP overlay network to its underlying network.