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Example WPS Network Setup, Client 1

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ZyXEL G-220 v2 User's Guide Figure 22 How WPS works ACTIVATE WPS WITHIN 2 MINUTES ACTIVATE WPS WPS HANDSHAKE ENROLLEE SECURE TUNNEL REGISTRAR SECURITY INFO COMMUNICATION The roles of registrar and enrollee last only as long as the WPS setup process is active (two minutes). The next time you use WPS, a different device can be the registrar if necessary. The WPS connection process is like a handshake; only two devices participate in each WPS transaction. If you want to add more devices you should repeat the process with one of the existing networked devices and the new device. Note that the access point (AP) is not always the registrar, and the wireless client is not always the enrollee. All WPS-certified APs can be a registrar, and so can some WPS-enabled wireless clients. By default, a WPS devices is "unconfigured". This means that it is not part of an existing network and can act as either enrollee or registrar (if it supports both functions). If the registrar is unconfigured, the security settings it transmits to the enrollee are randomly-generated. Once a WPS-enabled device has connected to another device using WPS, it becomes "configured". A configured wireless client can still act as enrollee or registrar in subsequent WPS connections, but a configured access point can no longer act as enrollee. It will be the registrar in all subsequent WPS connections in which it is involved. If you want a configured AP to act as an enrollee, you must reset it to its factory defaults. 3.3.3.1 Example WPS Network Setup This section shows how security settings are distributed in an example WPS setup. The following figure shows an example network. In step 1, both AP1 and Client 1 are unconfigured. When WPS is activated on both, they perform the handshake. In this example, AP1 is the registrar, and Client 1 is the enrollee. The registrar randomly generates the security information to set up the network, since it is unconfigured and has no existing information. 42 Chapter 3 Wireless LAN Network

Section	Page
User’s Guide	1
About This User's Guide	3
Document Conventions	4
Safety Warnings	6
Copyright	7
Certifications	8
ZyXEL Limited Warranty	10
Table of Contents	11
List of Figures	15
List of Tables	19
Getting Started	21
1.1 About Your G-220 v2	21
1.2 Application Overview	21
1.2.1 Windows Vista Users	21
1.2.2 Station Mode	21
1.2.2.1 Infrastructure	21
1.2.2.2 Ad-Hoc	22
1.2.3 Access Point Mode	23
1.2.4 Changing G-220 v2 Mode	23
1.3 G-220 v2 Hardware and Utility Installation	24
1.3.1 ZyXEL Utility Icon	24
1.4 Configuration Methods	24
1.4.1 Enabling WZC	24
1.4.2 Accessing the ZyXEL Utility	25
Tutorial	27
2.1 Connecting to a Wireless LAN	27
2.2 Creating and Using a Profile	29
2.3 Configuring the G-220 v2 as an AP	32
Wireless LAN Network	35
3.1 Wireless LAN Overview	35
3.2 Wireless LAN Security	36
3.2.1 Hide SSID	36
3.2.2 MAC Address Filter	36
3.2.3 User Authentication and Encryption	37
3.2.3.1 WEP	37
3.2.3.2 IEEE 802.1x	38
3.2.3.3 WPA and WPA2	38
3.3 WiFi Protected Setup	39
3.3.1 Push Button Configuration	39
3.3.2 PIN Configuration	39
3.3.3 How WPS Works	41
3.3.3.1 Example WPS Network Setup	42
3.3.4 Limitations of WPS	44
3.4 Introduction to OTIST	45
3.4.1 Enabling OTIST	45
3.4.1.1 AP	45
3.4.1.2 Wireless Client	46
3.4.2 Starting OTIST	47
3.4.3 Notes on OTIST	47
Wireless Station Mode Configuration	49
4.1 Wireless Station Mode Overview	49
4.1.1 ZyXEL Utility Screen Summary	49
4.2 The Link Info Screen	50
4.2.1 Trend Chart	51
4.3 The Site Survey Screen	52
4.3.1 Security Settings	53
4.3.1.1 WEP Encryption	54
4.3.1.2 WPA-PSK/WPA2-PSK	55
4.3.1.3 WPA/WPA2	56
4.3.1.4 IEEE 802.1x	57
4.3.2 Confirm Save Screen	59
4.4 The Profile Screen	60
4.4.1 Adding a New Profile	62
4.5 The Adapter Screen	66
4.6 Security Settings in Windows Vista	69
4.6.1 Using PEAP in Vista	69
4.6.2 Using TLS in Vista	70
Access Point Mode Configuration	73
5.1 Access Point Mode Introduction	73
5.1.1 ZyXEL Utility Screen Summary	73
5.1.2 Additional Setup Requirements	74
5.2 The Link Info Screen	74
5.3 The Configuration Screen	75
5.4 The MAC Filter Screen	77
Maintenance	79
6.1 The About Screen	79
6.2 Uninstalling the ZyXEL Utility	79
6.3 Upgrading the ZyXEL Utility	80
Troubleshooting	83
7.1 Problems Starting the ZyXEL Utility	83
7.2 Problem Connecting to an Access Point	83
7.3 Problem with the Link Quality	84
7.4 Problems Communicating With Other Computers	84
Product Specifications	85
Access Point Mode Setup Example	87
Configuring the Computer on Which You Install the G-220 v2	87
Configuring the Wireless Station Computer	89
Management with Wireless Zero Configuration	91
Activating Wireless Zero Configuration	91
Connecting to a Wireless Network	92
Security Settings	95
Association	96
Authentication	97
Ordering the Preferred Networks	100
Wireless Security	103
Types of EAP Authentication	103
EAP-MD5 (Message-Digest Algorithm 5)	103
EAP-TLS (Transport Layer Security)	104
EAP-TTLS (Tunneled Transport Layer Service)	104
PEAP (Protected EAP)	104
LEAP	104
Dynamic WEP Key Exchange	104
WPA and WPA2	105
Encryption	105
User Authentication	106
WPA(2)-PSK Application Example	107
WPA(2) with RADIUS Application Example	107
Security Parameters Summary	108
Setting up Your Computer’s IP Address	109
Windows 95/98/Me	109
Installing Components	110
Configuring	111
Verifying Settings	112
Windows 2000/NT/XP	112
Verifying Settings	116
Macintosh OS 8/9	116
Verifying Settings	118
Macintosh OS X	118
Verifying Settings	119
Customer Support	121

Match case Limit results 1 per page

ZyXEL G-220 v2 User’s Guide

Chapter 3 Wireless LAN Network

Figure 22

How WPS works

SECURE TUNNEL

SECURITY INFO

WITHIN 2 MINUTES

COMMUNICATION

ACTIVATE

WPS

ACTIVATE

WPS

WPS HANDSHAKE

REGISTRAR

ENROLLEE

The roles of registrar and enrollee last only as long as the WPS setup process is active (two

minutes). The next time you use WPS, a different device can be the registrar if necessary.

The WPS connection process is like a handshake; only two devices participate in each WPS

transaction. If you want to add more devices you should repeat the process with one of the

existing networked devices and the new device.

Note that the access point (AP) is not always the registrar, and the wireless client is not always

the enrollee. All WPS-certified APs can be a registrar, and so can some WPS-enabled wireless

clients.

By default, a WPS devices is “unconfigured”. This means that it is not part of an existing

network and can act as either enrollee or registrar (if it supports both functions). If the registrar

is unconfigured, the security settings it transmits to the enrollee are randomly-generated. Once

a WPS-enabled device has connected to another device using WPS, it becomes “configured”.

A configured wireless client can still act as enrollee or registrar in subsequent WPS

connections, but a configured access point can no longer act as enrollee. It will be the registrar

in all subsequent WPS connections in which it is involved. If you want a configured AP to act

as an enrollee, you must reset it to its factory defaults.

3.3.3.1

Example WPS Network Setup

This section shows how security settings are distributed in an example WPS setup.

The following figure shows an example network. In step

, both

AP1

and

Client 1

are

unconfigured. When WPS is activated on both, they perform the handshake. In this example,

AP1

is the registrar, and

Client 1

is the enrollee. The registrar randomly generates the security

information to set up the network, since it is unconfigured and has no existing information.