NEC WL1700-MS Installation Manual - page 18

Introduction

xvi

Security Precautions Regarding Wireless LAN

(Important Section for Protecting Client’s Privacy!)

In wireless LAN, rather than using LAN cables, information is exchanged 

between PC and Access Point through radio wave transmission. The benefit is the 

freedom to create LAN connection anywhere within radio wave transmission 

area.

On the other hand, because radio waves travel through obstacles (such as 

ceilings), without security measures, the following problems may arise.

l

Transmitted data may be seen

A malicious intruder may purposely intercept the radio waves. E-mails with 

personal information such as ID, password or credit card number may be 

seen.

l

Possibility of intrusion

(1) 2.4

:Indication of radio equipment using 2.4GHz.

(2) DS

OF

:Indicates DS-SS method.

:Indicates OFDM method. 

(3) 4

:Indicates assumed interference distance towards 

premises radio station of RF-ID. "4" indicates the 

distance is less than 40m.

(4)

:Indicates the use of all frequency bandwidths. Also, 

it is possible to avoid the frequency bandwidths 

used by premises radio station of RF-ID.

2.4DS/OF4

(1)

(2)

(3)

(4)