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Chapter 3 Wireless LANs
NWD-211AN User’s Guide
42
Encryption
The process of taking data and encoding it, usually using a mathematical formula,
so that it becomes unreadable unless decrypted with the proper code or pass
phrase.
3.1.3 Before You Begin
• You should have valid login information for an existing network Access Point,
otherwise you may not be able to make a network connection right away.
3.2 Wireless LAN Overview
The following figure provides an example of a wireless network with an AP. See
Figure 3 on page 25 for an Ad Hoc network example.
Figure 22 Example of a Wireless Network
The wireless network is the part in the blue circle. In this wireless network, devices A and B
are called wireless clients. The wireless clients use the access point (AP) to interact with other
devices (such as the printer) or with the Internet.
Every wireless network must follow these basic guidelines.
• Every device in the same wireless network must use the same SSID.
The SSID is the name of the wireless network. It stands for Service Set
IDentity.
- NWD-211AN 1
- About This User's Guide 3
- Document Conventions 4
- Icons Used in Figures 5
- Safety Warnings 6
- Contents Overview 7
- Chapter 3 10
- Chapter 4 10
- Table of Contents 12
- List of Figures 13
- List of Tables 17
- Introduction and 19
- Configuration 19
- CHAPTER 1 1 21
- 1.2 About Your NWD-211AN 22
- Table 3 NWD-211AN LEDs 23
- 1.3 Application Overview 24
- 1.4.1 ZyXEL Utility Icon 25
- 1.5 Configuration Methods 26
- CHAPTER 2 27
- Setup (WPS) 28
- 2.2.2 PIN Configuration 30
- Chapter 2 Tutorial 39
- Chapter 2 Tutorial 40
- CHAPTER 3 41
- 3.2 Wireless LAN Overview 42
- 3.3 Wireless LAN Security 43
- 3.3.1.2 IEEE 802.1x 44
- 3.4 Wi-Fi Protected Setup 45
- 3.4.2 PIN Configuration 46
- 3.4.3 How WPS Works 48
- Figure 24 How WPS works 49
- REGISTRARENROLLEE 50
- SECURITY INFO 50
- REGISTRAR 50
- ENROLLEE 50
- EXISTING CONNECTION 50
- 3.4.4 Limitations of WPS 51
- CHAPTER 4 53
- 4.1.2 What You Need to Know 54
- 4.1.3 Before You Begin 55
- 4.3 The Link Info Screen 56
- 4.3.1 Trend Chart 57
- 4.4 The Site Survey Screen 58
- 4.4.1 Security Settings 59
- 4.4.1.2 WPA-PSK/WPA2-PSK 61
- 4.4.1.3 WPA/WPA2 62
- 4.4.1.4 IEEE 802.1x 63
- 4.5 The Profile Screen 65
- Table 14 Profile 66
- Figure 38 Profile 66
- 4.5.1 Adding a New Profile 67
- 4.6 The Adapter Screen 71
- 4.7.1 Using PEAP in Vista 75
- 4.7.2 Using TLS in Vista 76
- CHAPTER 5 79
- 5.1.2 What You Need to Know 80
- 5.2 AP Mode Screen Summary 81
- 5.3 The Link Info Screen 82
- Table 22 Configuration 83
- 5.4.1 Security Settings 85
- 5.4.1.3 WPA-PSK/WPA2-PSK 87
- 5.5 The MAC Filter Screen 88
- CHAPTER 6 89
- 6.2 The About Screen 90
- Chapter 6 Maintenance 92
- Troubleshooting 93
- CHAPTER 7 95
- 7.3 Link Quality 96
- Computers 97
- Chapter 7 Troubleshooting 98
- CHAPTER 8 99
- NWD-211AN User’s Guide 100
- SOFTWARE SPECIFICATIONS 102
- WIRELESS FEATURES 102
- PART III 105
- APPENDIX A 107
- Windows XP/NT/2000 108
- Properties 109
- Verifying Settings 111
- Windows Vista 112
- APPENDIX B 117
- Figure 77 Basic Service Set 118
- Figure 79 RTS/CTS 120
- Fragmentation Threshold 121
- Preamble Type 121
- IEEE 802.11g Wireless LAN 121
- Wireless Security Overview 122
- IEEE 802.1x 123
- Types of EAP Authentication 124
- PEAP (Protected EAP) 125
- Dynamic WEP Key Exchange 126
- WPA and WPA2 126
- Encryption 127
- User Authentication 128
- Security Parameters Summary 130
- Antenna Overview 131
- Antenna Characteristics 131
- Types of Antennas for WLAN 131
- Positioning Antennas 132
- APPENDIX C 133
- Figure 86 Vista: Connecting 135
- LABEL DESCRIPTION 138
- Setting Up An Ad-Hoc Network 140
- Windows XP 142
- Security Settings 150
- APPENDIX D 157
- Industry Canada Statement 159
- IMPORTANT NOTE 159
- ZyXEL Limited Warranty 160
- Registration 161
- Appendix D Legal Information 162
- APPENDIX E 163
- Costa Rica 164
- Czech Republic 164
- Kazakhstan 166
- Malaysia 166
- North America 166
- Singapore 167
- Thailand 168
- United Kingdom 169
- Appendix E Customer Support 170
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