Encryption; Table 10 Types Of Encryption For Each Type Of Authentication - ZyXEL Communications PLA-450 User Manual

Pla-450 series homeplug av to wlan ap/bridge
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Chapter 6 Wireless LAN
If your AP does not provide a local user database and if you do not have a RADIUS server,
you cannot set up user names and passwords for your users.
Unauthorized devices can still see the information that is sent in the wireless network, even if
they cannot use the wireless network. Furthermore, there are ways for unauthorized wireless
users to get a valid user name and password. Then, they can use that user name and password
to use the wireless network.
Local user databases also have an additional limitation that is explained in the next section.

6.2.4 Encryption

Wireless networks can use encryption to protect the information that is sent in the wireless
network. Encryption is like a secret code. If you do not know the secret code, you cannot
understand the message.
The types of encryption you can choose depend on the type of user authentication. (See
Section 6.2.3 on page 59

Table 10 Types of Encryption for Each Type of Authentication

Weakest
Strongest
For example, if the wireless network has a RADIUS server, you can choose WPA or WPA2.
If users do not log in to the wireless network, you can choose no encryption, Static WEP,
WPA-PSK, or WPA2-PSK.
Usually, you should set up the strongest encryption that every wireless client in the wireless
network supports. For example, suppose the AP does not have a local user database, and you
do not have a RADIUS server. Therefore, there is no user authentication. Suppose the wireless
network has two wireless clients. Device A only supports WEP, and device B supports WEP
and WPA. Therefore, you should set up Static WEP in the wireless network.
It is recommended that wireless networks use WPA-PSK, WPA, or stronger
encryption. WEP encryption is better than none at all, but it is still possible for
unauthorized devices to figure out the original information pretty quickly.
It is not possible to use WPA-PSK, WPA or stronger encryption with a local user database. In
this case, it is better to set up stronger encryption with no authentication than to set up weaker
encryption with the local user database.
When you select WPA2 or WPA2-PSK in your PLA450, you can also select an option (WPA
Compatible) to support WPA as well. In this case, if some wireless clients support WPA and
some support WPA2, you should set up WPA2-PSK or WPA2 (depending on the type of
wireless network login) and select the WPA Compatible option in the PLA450.
60
for information about this.)
NO AUTHENTICATION
No Security
Static WEP
WPA-PSK
WPA2-PSK
RADIUS SERVER
WPA
WPA2
PLA450 User's Guide

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