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How Encryption for Strong
    Security Works

          ●VPN
          ●WAN

         ●Firewall

         ●TCP/IP
VPN(Virtual Private Network)
VPN is a computer
 network.It is
 comparatively
 cheap.Moreover,
 because various
 protocols exist,
 and various
 options can be
 used, It is used a
 lot.
WAN(Wide Area Network)

WAN is a
 computer
 network that is
 wider than LAN
 and MAN. It is
 often used as an
 antonym of LAN.
Firewall
Firewall is a
 Software to control
 communication
 between a certain
 specific computer
 network and the
 outside, and to
 defend internal
 computer network.
TCP/IP

TCP/IP enables
 to communicate
 mutually with all
 computers and
 quite different
 OS.
Reference
●   Wikipedia
http://en.wikipedia.org/wiki/VPN
http://en.wikipedia.org/wiki/WAN
http://en.wikipedia.org/wiki/Firewall
http://en.wikipedia.org/wiki/TCP/IP

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Week13

  • 1. How Encryption for Strong Security Works ●VPN ●WAN ●Firewall ●TCP/IP
  • 2. VPN(Virtual Private Network) VPN is a computer network.It is comparatively cheap.Moreover, because various protocols exist, and various options can be used, It is used a lot.
  • 3. WAN(Wide Area Network) WAN is a computer network that is wider than LAN and MAN. It is often used as an antonym of LAN.
  • 4. Firewall Firewall is a Software to control communication between a certain specific computer network and the outside, and to defend internal computer network.
  • 5. TCP/IP TCP/IP enables to communicate mutually with all computers and quite different OS.
  • 6. Reference ● Wikipedia http://en.wikipedia.org/wiki/VPN http://en.wikipedia.org/wiki/WAN http://en.wikipedia.org/wiki/Firewall http://en.wikipedia.org/wiki/TCP/IP