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Nikkei Network

June 2005

FEATURE 1

Free Internet Telephone Service
A Thorough Examination of Skype
Solving three mysteries

- Skype software allows users to make free calls worldwide to other Skype users, and it has gained a great deal of attention recently. Employed principally by a large number of users on the Internet, it can in fact be used in any connection environment. The sound quality is superb.
Through a study of actual measurement data, this article examines how this excellent service was developed.


Mystery 1: How can it be used for free by people around the world?

Mystery 2: How can it be used in any connection environment?

Mystery 3: How can it provide such excellent sound quality?


Boxed Articles:
- Easy guides for installing Skype
- Firewalls that can block Skype


PRODUCT LABORATORY

Packet Capture Software

- The software enables users to visualize packets flowing in a LAN

- There is a difference between free software and commercial software in terms of their ability to display packets


INVESTIGATING NETWORKS

Where Are IC Tags Used?

- Their scope of application has been widened from sushi restaurants to elementary schools

- There is concern that they are being used on the street for improper purposes


FEATURE 2

The Taboos of Windows Networks
- There are unique rules for using Windows networks; if users do not understand them accurately, they may inadvertently create security holes or cause other troubles.
This article will help you to learn the taboos of Windows networks, which users are likely to violate due to a lack of understanding or a misunderstanding, and to acquire practical knowledge useful for your work.


Taboo 1: Local accounts must not be left unchecked

Taboo 2: The files on a server must not be moved without good reason

Taboo 3: Too much confidence must not be placed in the function designed to prevent the duplication of names

Taboo 4: The FAT file system must not be used

Taboo 5: Share permissions must not be used without appropriate reasons

Taboo 6: Accounts must not be deleted

Taboo 7: Domain names must not be changed

Taboo 8: WINS must not be used


 

Nikkei Network

June 2005

FEATURE 1

Free Internet Telephone Service
A Thorough Examination of Skype
Solving three mysteries

- Skype software allows users to make free calls worldwide to other Skype users, and it has gained a great deal of attention recently. Employed principally by a large number of users on the Internet, it can in fact be used in any connection environment. The sound quality is superb.
Through a study of actual measurement data, this article examines how this excellent service was developed.


Mystery 1: How can it be used for free by people around the world?

Mystery 2: How can it be used in any connection environment?

Mystery 3: How can it provide such excellent sound quality?


Boxed Articles:
- Easy guides for installing Skype
- Firewalls that can block Skype


PRODUCT LABORATORY

Packet Capture Software

- The software enables users to visualize packets flowing in a LAN

- There is a difference between free software and commercial software in terms of their ability to display packets


INVESTIGATING NETWORKS

Where Are IC Tags Used?

- Their scope of application has been widened from sushi restaurants to elementary schools

- There is concern that they are being used on the street for improper purposes


FEATURE 2

The Taboos of Windows Networks
- There are unique rules for using Windows networks; if users do not understand them accurately, they may inadvertently create security holes or cause other troubles.
This article will help you to learn the taboos of Windows networks, which users are likely to violate due to a lack of understanding or a misunderstanding, and to acquire practical knowledge useful for your work.


Taboo 1: Local accounts must not be left unchecked

Taboo 2: The files on a server must not be moved without good reason

Taboo 3: Too much confidence must not be placed in the function designed to prevent the duplication of names

Taboo 4: The FAT file system must not be used

Taboo 5: Share permissions must not be used without appropriate reasons

Taboo 6: Accounts must not be deleted

Taboo 7: Domain names must not be changed

Taboo 8: WINS must not be used