When PCs are connected to a large computer, they usually access the Internet using a modem. Ethernet Ethernet is the protocol which allows individual computers to exchange information through a network via cables. Using EtherTalk, computers can communicate at about one million characters per second. Internet security to most teachers, means allowing students access to only appropriate information. The URL hot-list of sites also can be checked, and access can be prevented that way.
Some programs update their hot-lists automatically.
Most hot-lists are editable. There are several ways to connect computers via the Internet. These are two methods of connecting to the Internet more directly and faster than a voice modem. You must have an ISDN modem to connect. Cable Television and Satellite Cable modems allow computers to connect to ISPs via cable-TV boxes or satellite systems.