Chapter 7 Wireless
VMG1312-B Series User’s Guide
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wireless users t o get a valid user nam e and password. Then, t hey can use t hat user nam e and
password t o use t he wireless net work.
7.10.3.4 Encryption
Wireless net works can use encrypt ion t o prot ect t he inform at ion t hat is sent in t he wireless
net work. Encrypt ion is like a secret code. I f you do not know t he secret code, you cannot
underst and t he m essage.
The t ypes of encrypt ion you can choose depend on t he t ype of aut hent icat ion. ( See
for inform at ion about t his.)
For exam ple, if t he wireless net work has a RADI US server, you can choose
W PA
or
W PA2
. I f users
do not log in t o t he w ireless net work, you can choose no encrypt ion,
St a t ic W EP
,
W PA- PSK
, or
W PA2 - PSK
.
Usually, you should set up t he st rongest encrypt ion t hat every device in t he wireless net work
support s. For exam ple, suppose you have a wireless net work wit h t he Device and you do not have
a RADI US server. Therefore, t here is no aut hent icat ion. Suppose t he wireless net work has t wo
devices. Device A only support s WEP, and device B support s WEP and WPA. Therefore, you should
set up
St a t ic W EP
in t he wireless net work.
Not e: I t is recom m ended t hat w ireless net w orks use
W PA- PSK
,
W PA
, or st r onger
encr ypt ion. The ot her t ypes of encr ypt ion ar e bet t er t han none at all, but it is st ill
possible for unaut hor ized w ir eless devices t o figur e out t he or iginal infor m at ion
pr et t y quickly.
When you select
W PA2
or
W PA2 - PSK
in your Device, you can also select an opt ion (
W PA
com pa t ible
) t o support WPA as well. I n t his case, if som e of t he devices support WPA and som e
support WPA2, you should set up
W PA2 - PSK
or
W PA2
( depending on t he t ype of wireless net work
login) and select t he
W PA com pa t ible
opt ion in t he Device.
Many t ypes of encrypt ion use a key t o prot ect t he inform at ion in t he wireless net work. The longer
t he key, t he st ronger t he encrypt ion. Every device in t he wireless net work m ust have t he sam e key.
7.10.4 Signal Problems
Because wireless net works are radio net works, t heir signals are subj ect t o lim it at ions of dist ance,
int erference and absorpt ion.
Problem s wit h dist ance occur when t he t wo radios are t oo far apart . Problem s wit h int erference
occur when ot her radio waves int errupt t he dat a signal. I nt erference m ay com e from ot her radio
t ransm issions, such as m ilit ary or air t raffic cont rol com m unicat ions, or from m achines t hat are
Table 29
Types of Encrypt ion for Each Type of Aut hent icat ion
NO AUTHENTICATION
RADIUS SERVER
W e a k e st
No Securit y
WPA
St at ic WEP
WPA- PSK
St r on ge st
WPA2- PSK
WPA2
Summary of Contents for VMG1312-B Series
Page 4: ...Contents Overview VMG1312 B Series User s Guide 4 Troubleshooting 289 ...
Page 14: ...Table of Contents VMG1312 B Series User s Guide 14 ...
Page 15: ...15 PART I User s Guide ...
Page 16: ...16 ...
Page 30: ...Chapter 2 The Web Configurator VMG1312 B Series User s Guide 30 ...
Page 35: ...Chapter 4 Tutorials VMG1312 B Series User s Guide 35 7 Click Apply to save your settings ...
Page 77: ...77 PART II Technical Reference ...
Page 78: ...78 ...
Page 166: ...Chapter 9 Routing VMG1312 B Series User s Guide 166 ...
Page 184: ...Chapter 10 Quality of Service QoS VMG1312 B Series User s Guide 184 ...
Page 210: ...Chapter 13 Interface Group VMG1312 B Series User s Guide 210 ...
Page 226: ...Chapter 15 Firewall VMG1312 B Series User s Guide 226 ...
Page 232: ...Chapter 17 Parental Control VMG1312 B Series User s Guide 232 ...
Page 242: ...Chapter 19 Certificates VMG1312 B Series User s Guide 242 ...
Page 246: ...Chapter 20 Log VMG1312 B Series User s Guide 246 ...
Page 250: ...Chapter 21 Traffic Status VMG1312 B Series User s Guide 250 ...
Page 256: ...Chapter 24 IGMP Status VMG1312 B Series User s Guide 256 ...
Page 260: ...Chapter 25 xDSL Statistics VMG1312 B Series User s Guide 260 ...
Page 262: ...Chapter 26 User Account VMG1312 B Series User s Guide 262 ...
Page 268: ...Chapter 29 TR 064 VMG1312 B Series User s Guide 268 ...
Page 272: ...Chapter 30 Time Settings VMG1312 B Series User s Guide 272 ...
Page 278: ...Chapter 32 Logs Setting VMG1312 B Series User s Guide 278 ...
Page 296: ...Chapter 36 Troubleshooting VMG1312 B Series User s Guide 296 ...
Page 336: ...Appendix C Pop up Windows JavaScripts and Java Permissions VMG1312 B Series User s Guide 336 ...
Page 350: ...Appendix D Wireless LANs VMG1312 B Series User s Guide 350 ...
Page 374: ...VMG1312 B Series User s Guide 374 Index ...