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Wireless LAN Network

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ZyXEL G-302 v3 User's Guide CHAPTER 2 Wireless LAN Network This chapter provides background information on wireless LAN network. 2.1 Wireless LAN Overview This section describes the wireless LAN network terms and applications. 2.1.1 SSID The SSID (Service Set Identity) is a unique name shared among all wireless devices in a wireless network. Wireless devices must have the same SSID to communicate with each other. 2.1.2 Channel A radio frequency used by a wireless device is called a channel. 2.1.3 Transmission Rate When the communication quality drops below a certain level, the G-302 v3 automatically switches to a lower transmission (data) rate. Transmission at lower data speeds is usually more reliable. When the communication quality improves again, the G-302 v3 gradually increases the transmission (data) rate again until it reaches the highest available transmission rate. Note: Actual speeds attained also depend on the distance from the AP, noise, etc. 2.2 Wireless LAN Security Overview Wireless LAN security is vital to your network to protect wireless communications. Configure the wireless LAN security using the Profile Security Settings screen. If you do not enable any wireless security on your G-302 v3, the G-302 v3's wireless communications are accessible to any wireless networking device that is in the coverage area. Chapter 2 Wireless LAN Network 29

Section	Page
User’s Guide	1
Preface	3
Safety Warnings	5
Copyright	7
Certifications	8
ZyXEL Limited Warranty	10
Customer Support	11
Table of Contents	17
List of Figures	21
List of Tables	23
Getting Started	25
1.1 About Your G-302 v3	25
1.1.1 Windows Vista Users	25
1.1.2 Application Overview	25
1.1.2.1 Infrastructure	26
1.1.2.2 Ad-Hoc	26
1.2 G-302 v3 Hardware and Utility Installation	27
1.3 Configuration Methods	27
1.4 Windows XP Users Only	27
1.5 Accessing the ZyXEL Utility	28
1.6 ZyXEL Utility Screen Summary	29
1.7 Connecting to a Wireless LAN	29
1.7.1 Site Survey	29
Wireless LAN Network	33
2.1 Wireless LAN Overview	33
2.1.1 SSID	33
2.1.2 Channel	33
2.1.3 Transmission Rate	33
2.2 Wireless LAN Security Overview	33
2.2.1 Data Encryption with WEP	34
2.2.2 IEEE 802.1x	34
2.2.2.1 EAP Authentication	34
2.2.3 WPA and WPA2	35
2.2.3.1 Encryption	35
2.2.3.2 User Authentication	35
2.2.4 WPA(2)-PSK Application Example	35
2.2.5 WPA(2) with RADIUS Application Example	36
2.3 Authentication Type	37
2.4 Preamble Type	37
ZyXEL Utility Configuration	39
3.1 The Link Info Screen	39
3.1.1 Trend Chart	40
3.2 The Site Survey Screen	41
3.2.1 Connecting to a WLAN Network	42
3.2.2 Security Settings	42
3.2.2.1 WEP Encryption	43
3.2.2.2 WPA/WPA2	44
3.2.2.3 WPA-PSK/WPA2-PSK	45
3.2.3 Confirm Save Screen	46
3.3 The Profile Screen	46
3.3.1 Adding a New Profile	48
3.4 The Adapter Screen	52
Maintenance	53
4.1 The About Screen	53
4.2 Uninstalling the ZyXEL Utility	53
4.3 Upgrading the ZyXEL Utility	54
Troubleshooting	55
5.1 Problems Starting the ZyXEL Utility	55
5.2 Problem with the Link Quality	55
5.3 Problems Communicating With Other Computers	56
5.4 Windows Vista Users - How To Start WLAN AutoConfig	56
Product Specifications	59
Management with Wireless Zero Configuration	61
Activating Wireless Zero Configuration	61
Connecting to a Wireless Network	62
Security Settings	65
Association	66
Authentication	67
Ordering the Preferred Networks	70
Wireless Security	73
Types of EAP Authentication	73
EAP-MD5 (Message-Digest Algorithm 5)	73
EAP-TLS (Transport Layer Security)	73
EAP-TTLS (Tunneled Transport Layer Service)	74
PEAP (Protected EAP)	74
LEAP	74
Dynamic WEP Key Exchange	74
WPA(2)	75
Encryption	75
User Authentication	76
WPA(2)-PSK Application Example	76
WPA(2) with RADIUS Application Example	77
Security Parameters Summary	78
Index	79
A	79
C	79
D	79
E	79
F	79
G	79
H	79
I	79
L	79
M	79
N	80
O	80
P	80
Q	80
R	80
S	80
T	80
U	80
V	80
W	80

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ZyXEL G-302 v3 User’s Guide

Chapter 2 Wireless LAN Network

HAPTER

Wireless LAN Network

This chapter provides background information on wireless LAN network.

2.1

Wireless LAN Overview

This section describes the wireless LAN network terms and applications.

2.1.1

SSID

The SSID (Service Set Identity) is a unique name shared among all wireless devices in a

wireless network. Wireless devices must have the same SSID to communicate with each other.

2.1.2

Channel

A radio frequency used by a wireless device is called a channel.

2.1.3

Transmission Rate

When the communication quality drops below a certain level, the G-302 v3 automatically

switches to a lower transmission (data) rate. Transmission at lower data speeds is usually more

reliable. When the communication quality improves again, the G-302 v3 gradually increases

the transmission (data) rate again until it reaches the highest available transmission rate.

Note:

Actual speeds attained also depend on the distance from the AP, noise, etc.

2.2

Wireless LAN Security Overview

Wireless LAN security is vital to your network to protect wireless communications.

Configure the wireless LAN security using the

Profile Security Settings

screen. If you do not

enable any wireless security on your G-302 v3, the G-302 v3’s wireless communications are

accessible to any wireless networking device that is in the coverage area.