Internet, Intranet, Extranet, Fishing net

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Internet, Intranet, Extranet, Fishing net

• What they are for?

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Internet vs. WWW

• Transmit data and information from one computer
  to another
• Internet protocol (IP) allows routing from one
  network to another
• Transfer Control Protocol (TCP) used with IP by
  most systems
• URLs
• WWW- content

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Language of the Web

• HTML
• XML extensible markup language
• Applets
• Java (for applets)

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URL address extensions
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Internet services

• E-mail
• Telnet
• FTP
• Newsgroups
• Chat rooms
• Phone
• Videoconferencing

• Shopping
• Entertainment
• Auctions
• Content streaming (w/o interruptions!)
• Instant messaging (on-line conversation)

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Other services of the Web

• Search engines
• Their purpose
• Can you name some?
• Pull vs. push technologies

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Security

• PW
• Encryption
• Firewalls
• Viruses
• Anti-Virus SW
• Call-back
• Digital signatures
• Legal protection
• VPN Virtual Private Networks

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Intranets and Extranets
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End Internet, Intranet, Extranet