Internet services

The Internet can be used in in different ways: for distributing and retrieving information, for one-to-one, one-to-many and many-to-many communication, and for the access services. Accordingly, there are different services on offer. The most important of these are listed below.

Telnet

FTP (File Transfer Protocol)

Electronic Messaging (E-Mail)

World Wide Web (WWW)

Bulletin Board Systems (BBS)

Electronic Data Interchange (EDI)

Internet Relay Chat (IRC)

Multiple User Dimensions (MUDs)

Gopher

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skytale

The skytale (pronunciation: ski-ta-le) was a Spartan tool for encryption. It consisted of a piece of wood and a leather-strip. Any communicating party needed exactly the same size wooden stick. The secret message was written on the leather-strip that was wound around the wood, unwound again and sent to the recipient by a messenger. The recipient would rewound the leather and by doing this enciphering the message.

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