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Nikkei Network

September 2005 Issue

FEATURE 1 A Thorough Manual for the Effective Use of Personal Firewalls - Personal firewalls are designed to protect only PCs or servers in which they are installed.  There is a widespread assumption that firewalls are for corporate use only, but they are now being used for individual PCs.  This article reveals the hidden mechanism of personal firewalls and examines the key points in their effective use. Part 1: Understanding the overview - Firewalls fill in the security holes in anti-virus software - Firewalls are becoming indispensable to maintain the security of PCs Part 2: Understanding the mechanism - Firewalls put communications on hold in order to check their content - Innovative designs are applied to the method for detecting malicious content  Part 3: Knowing the key points for effective use - How to use pre-installed Windows standard software and other software found on the market

PRODUCT LABORATORY

Network cameras|

- They work as a Web server to transmit videos

- Prices vary depending on whether wireless LAN or a pan/tilt function is equipped

FEATURE 2

Knowing the Meaning of Error Messages that Can Help You out of Trouble?

- If you are a regular network user, you will encounter error messages at some point.  There are a wide range of error messages, ranging from “404 Not Found,” which we see frequently, to uncommon messages that are rarely seen. 
This article explains the meaning of the error messages that we receive from software and the IT devices that we use. 


Introduction:
- Error messages appear suddenly, but you need not be afraid of them if you grasp the key points

Software:
- The messages convey their meaning through readable characters or status codes based on numbers

Hardware:
- LED lumps are not ornaments but notify users of the current status by changing colors or blinking