[in Japanese]

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[in Japanese]

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Firewalls are used when security-conscious networks such as corporate local area networks are connected to the Internet. To set up firewalls, such technologies as packet filtering and application gateway can be utilized. Recently commercial packages which provide firewall functionality began to appear in the market. In order to fight against ever improving invasion techniques, Internet users must have a solid knowledge on security and firewalls and be sensitive to the new information.

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[in Japanese]

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More than 6,300 people lost their lives and a great number of buildings and roads were terribly destroyed in the "Hanshin-Awaji Earthquake". The earthquake played havoc with the business activities of many companies and brought two problems to the fore. One is lack of a dependable Backup System in many companies in Japan. The other is the weakness of Office Information Systems following down-sizing. This section deals with the reasons why, unlike in the United States, the Disaster Recovery Service Industry has not been successful in Japan, and also the ways to improve the situation. Then the following section analyses the weakness of office buildings and proposes Disaster Plans for Office Information Systems by taking an intelligent building as an example.

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[in Japanese]

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