NEC ShieldPRO N22A, Руководство пользователя

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2.12.4 Wireless LAN (applied to N22A of wireless LAN installation
model only)
N22A of wireless LAN installation model allows the wireless LAN feature to be used.
N22A of no wireless LAN installation model cannot be equipped with the wireless LAN feature
later.
Notes on security in use of wireless LAN products
The wireless LAN is advantageous to allow LAN connection freely within the radio wave range
because data is transmitted among wireless access points including computers through radio
waves instead of using LAN cables.
On the other hand, since radio waves reach any locations over obstacles (including walls)
within a certain range, the following problems may occur without security.

Stealing communication data
Malicious outsiders may intentionally intercept radio waves to steal communication data as follows:
−
Personal information including IDs, passwords and credit card numbers
−
Mail contents

Invading into network illegally
Malicious outsiders may access to personal and corporate networks without notice to take the following actions:
−
Acquiring private and confidential information (information leak)
−
Make communication as a specific person to spread illegal information (spoofing)
−
Rewrites intercepted communication data to be transmitted (falsification)
−
Spread computer virus to destroy data and/or systems (destruction)
The N22A provides security settings against the problems mentioned above, for wireless LAN
cards or wireless access points. In nature, wireless LAN cards and wireless access points have
proper security features to cope with these problems. Accordingly, wireless LAN products can
be used with their security features to reduce occurrences of the problems.

The communication speed and distance vary depending on wireless LAN devices and
ambient conditions including radio wave environment, obstacles and installation environment.

Due to the property of radio wave, the communication speed is apt to be slower as the
communication distance is longer. To allow you to use wireless LAN more comfortable, it is
recommended to use wireless LAN devices within a distance as short as possible.

To connect N22A to network, wireless LAN access points sold separately and some other
devices are required.

Using N22A in a country other than Japan may conflict relevant laws in the country.
Accordingly, disable the wireless LAN feature of N22A in other than Japan.

During network communication, do not enter N22A into the pause or suspend (standby) state.

During network communication, connect the AC adapter to N22A. Only the battery can
operate N22A for a rather short period.

For influences on airplanes or medical devices, see
“
Cautions on using wireless features
”
in
“
For safety
”
.

Confirm that [Wireless LAN Controller] is set [Enabled] in BIOS Setting when using wireless
LAN. See
“
PCI Configuration Submenu
”
in
“
Chapter4 SETTING BIOS
”
in detail.
Security settings are not be performed when the N22A is purchased.