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Internet: Global and Ubiquitous Infrastructure for Communication

Communication Technology

Wireless

Satellite

ATMOptical Fiber

Copper Cable

WDM/SDH

ISDN

Internet Technology

CATV

Cable Modem

Society

TCP/IP

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– Computer Network is our giant wheel!

– Computer Network

� Invisible Computers

�The Internet is “Dependable Infrastructure”

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Computer Network is for daily life!Computer Network is for daily life!

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– (messaging)

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PSTN:PSTN:

� Network as service infrastructure

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Circuit switch

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Internet:Internet:

� End-to-End model

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Core routers

Core routers

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– “Culture of Security” (OECD security guideline published in 2002)

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� Perimeter Defense / Boarder Protection

Internal network

Area of “under control”

FEBA: Fighting Edge of Battle Area, perimeter / boarder

Internal network

Perimeter

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Internet for EverythingInternet for Everything

�Always connected with global address

�New services with various kind of devices

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– On-line shopping

– On-line reservation

– On-line trading

– On-line banking

– On-line entertainment

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Dependable / Critical InfrastructureDependable / Critical Infrastructure

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– 2002.4.1)

–(2003.3.1)

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� Dependable infrastructure

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ATM 2003/8

2004/3

2003 3,025

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ATM 2002/1 2004/1

JST

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Business

Operation

Information

ManagementNetwork & System

Operation

Asset

Management

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� IT

� IT

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– Moving target

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Security Policy =Security Policy =

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– “We are in the same boat”

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BCP (Best Current Practice)

moving targetmoving target

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�Moving target

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�Compliance

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