Bedienungsanleitung ZyXEL WRE6606 (Seite 57 von 113) (Englisch)

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Chapter 10 Wireless LAN

WRE6606 User’s Guide

• Every wireless client in the same wireless network must use security compatible with the AP.

Security stops unauthorized devices from using the wireless network. It can also protect the

information that is sent in the wireless network.

10.3.1 Wireless Security Overview

The following sections introduce different types of wireless security you can set up in the wireless

network.

10.3.1.1 MAC Address List

Every wireless client has a unique identification number, called a MAC address.

A MAC address is

usually written using twelve hexadecimal characters

; for example, 00A0C5000002 or 00:A0:C5:00:00:02.

To get the MAC address for each wireless client, see the appropriate User’s Guide or other

documentation.

You can use the MAC Address List to tell the AP which wireless clients are allowed to use the wireless

network. If a wireless client is allowed to use the wireless network, it still has to have the correct settings

(SSID, channel, and security). If a wireless client is not allowed to use the wireless network, it does not

matter if it has the correct settings.

This type of security does not protect the information that is sent in the wireless network. Furthermore,

there are ways for unauthorized devices to get the MAC address of an authorized wireless client. Then,

they can use that MAC address to use the wireless network.

10.3.1.2 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.

For example, if users do not log in to the wireless network, you can choose no authentication, if users do

log on to the wireless network, you can choose No Security, Static WEP, WPA-PSK, or WPA2-PSK.

Usually, you should set up the strongest encryption that every wireless client in the wireless network

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

B supports WEP and WPA-PSK. Therefore, you should set up Static WEP in the wireless network.

Note: It is recommended that wireless networks use WPA-PSK, or stronger encryption. IEEE

802.1x and WEP encryption are better than none at all, but it is still possible for

unauthorized devices to figure out the original information pretty quickly.

1. Some wireless devices, such as scanners, can detect wireless networks but cannot use wireless networks. These

kinds of wireless devices might not have MAC addresses.

2. Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F.

Table 16 Types of Encryption for Each Type of Authentication

NO AUTHENTICATION

Weakest No Security

Static WEP

WPA-PSK

Strongest WPA2-PSK

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