ZyXEL Communications SMG-700 Podręcznik Użytkownika Pobierz pdf (Strona 53)

Chapter 6 Wireless LAN

P-974H/HW Series User’s Guide

MAC address of an authorized device. Then, they can use that MAC address to use

the wireless network.

User Authentication

You can make every user log in to the wireless network before they can use it.

This is called user authentication. However, every device in the wireless network

has to support IEEE 802.1x to do this.

You need to configure a RADIUS server to set up user names and passwords for

your users.

Unauthorized wireless 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.

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 authentication.

(See Section on page 53 for information about this.)

For example, if the wireless network has a RADIUS server, you can choose IEEE

802.1x, IEEE 802.1x + WEP, WPA or WPA2. If users do not log in to the

wireless network, you can choose WEP, WPA-PSK, or WPA2-PSK.

Usually, you should set up the strongest encryption that every device in the

wireless network supports. For example, suppose you have a wireless network

with the ZyXEL Device. The ZyXEL Device does not have a local user database,

and you do not have a RADIUS server. Therefore, there is no authentication.

Suppose the wireless network has two devices. Device A only supports WEP, and

device B supports WEP and WPA. Therefore, you should set up WEP in the

wireless network.

Table 16 Types of Encryption for Each Type of Authentication

NO AUTHENTICATION RADIUS SERVER

Weakest None IEEE 802.1x

Static WEP IEEE 802.1x + Static

WEP

WPA-PSK WPA

Strongest WPA2-PSK WPA2

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 115 116

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ZyXEL Communications SMG-700 Podręcznik Użytkownika Strona 53