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IEEE 802.1x, RADIUS, Support for RADIUS Remote Authentication Dial In User Service, RFC 2138, 2139

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Appendix A Wireless LANs Wireless security methods available on the NWD-270N are data encryption, wireless client authentication, restricting access by device MAC address and hiding the NWD-270N identity. The following figure shows the relative effectiveness of these wireless security methods available on your NWD-270N. Table 29 Wireless Security Levels SECURITY LEVEL SECURITY TYPE Least Secure Unique SSID (Default) Unique SSID with Hide SSID Enabled MAC Address Filtering WEP Encryption IEEE802.1x EAP with RADIUS Server Authentication Most Secure Wi-Fi Protected Access (WPA) WPA2 " You must enable the same wireless security settings on the NWD-270N and on all wireless clients that you want to associate with it. IEEE 802.1x In June 2001, the IEEE 802.1x standard was designed to extend the features of IEEE 802.11 to support extended authentication as well as providing additional accounting and control features. It is supported by Windows XP and a number of network devices. Some advantages of IEEE 802.1x are: • User based identification that allows for roaming. • Support for RADIUS (Remote Authentication Dial In User Service, RFC 2138, 2139) for centralized user profile and accounting management on a network RADIUS server. • Support for EAP (Extensible Authentication Protocol, RFC 2486) that allows additional authentication methods to be deployed with no changes to the access point or the wireless clients. RADIUS RADIUS is based on a client-server model that supports authentication, authorization and accounting. The access point is the client and the server is the RADIUS server. The RADIUS server handles the following tasks: • Authentication Determines the identity of the users. • Authorization 96 NWD-270N User's Guide

Section	Page
User’s Guide	1
About This User's Guide	3
Document Conventions	4
Safety Warnings	6
Contents Overview	7
Table of Contents	9
Introduction and Configuration	13
Getting Started	15
1.1 Overview	15
1.1.1 What You Need to Know	15
1.1.2 Before You Begin	15
1.2 About Your NWD-270N	16
1.2.1 Hardware	16
1.3 Application Overview	17
1.3.1 Infrastructure	17
1.3.2 Ad-Hoc	17
1.4 Hardware and Utility Installation	18
1.4.1 ZyXEL Utility Icon	18
1.5 Configuration Methods	19
1.5.1 Enabling Windows Wireless Configuration	19
1.5.2 Accessing the ZyXEL Utility	20
Tutorial	21
2.1 Overview	21
2.1.1 What You Can Do in This Tutorial	21
2.1.2 What You Need to Know	21
2.1.3 Before You Begin	22
2.2 Connecting to an AP using Wi-Fi Protected Setup (WPS)	22
2.2.1 Push Button Configuration (PBC)	22
2.2.2 PIN Configuration	23
2.3 Connecting to an AP Without Using WPS	25
2.3.1 Manually Connecting to a Wireless LAN	25
2.3.2 Creating and Using a Profile	27
2.4 Configuring the NWD-270N as an AP	29
Wireless LANs	31
3.1 Overview	31
3.1.1 What You Can Do in This Section	31
3.1.2 What You Need to Know	31
3.1.3 Before You Begin	32
3.2 Wireless LAN Overview	32
3.3 Wireless LAN Security	33
3.3.1 User Authentication and Encryption	33
3.4 WiFi Protected Setup	35
3.4.1 Push Button Configuration	35
3.4.2 PIN Configuration	36
3.4.3 How WPS Works	37
3.4.4 Limitations of WPS	40
Station Mode	43
4.1 Overview	43
4.1.1 What You Can Do in This Section	43
4.1.2 What You Need to Know	43
4.1.3 Before You Begin	44
4.2 ZyXEL Utility Screen Summary	44
4.3 The Link Info Screen	45
4.3.1 Trend Chart	46
4.4 The Site Survey Screen	47
4.4.1 Security Settings	48
4.4.2 Summary Screen	53
4.5 The Profile Screen	53
4.5.1 Adding a New Profile	55
4.6 The Adapter Screen	58
4.6.1 WPS: PBC (Push Button Configuration)	59
4.6.2 WPS: PIN - Use this Device’s PIN	60
4.6.3 WPS: PIN - Use the PIN from the AP or Wireless Router	61
4.7 Security Settings in Windows Vista	61
4.7.1 Using PEAP in Vista	62
4.7.2 Using TLS in Vista	63
AP Mode	65
5.1 Overview	65
5.1.1 What You Can Do in This Section	66
5.1.2 What You Need to Know	66
5.1.3 Before You Begin	67
5.2 AP Mode Screen Summary	67
5.3 The Link Info Screen	68
5.4 The Configuration Screen	69
5.4.1 Security Settings	70
5.5 The MAC Filter Screen	73
Maintenance	75
6.1 Overview	75
6.1.1 What You Can Do in This Section	75
6.1.2 What You Need to Know	75
6.1.3 Before You Begin	75
6.2 The About Screen	76
6.3 Uninstalling the ZyXEL Utility	76
6.4 Upgrading the ZyXEL Utility	77
Troubleshooting and Specifications	79
Troubleshooting	81
7.1 Power, Hardware Connections, and LEDs	81
7.2 Accessing the ZyXEL Utility	82
7.3 Link Quality	82
7.4 Problems Communicating with Other Computers	82
Product Specifications	85
Appendices and Index	89
Wireless LANs	91
Windows Wireless Management	105
Legal Information	127
Customer Support	131

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Appendix A Wireless LANs

NWD-270N User’s Guide

Wireless security methods available on the NWD-270N are data encryption, wireless client

authentication, restricting access by device MAC address and hiding the NWD-270N identity.

The following figure shows the relative effectiveness of these wireless security methods

available on your NWD-270N.

You must enable the same wireless security settings on the NWD-270N and

on all wireless clients that you want to associate with it.

IEEE 802.1x

In June 2001, the IEEE 802.1x standard was designed to extend the features of IEEE 802.11 to

support extended authentication as well as providing additional accounting and control

features. It is supported by Windows XP and a number of network devices. Some advantages

of IEEE 802.1x are:

•

User based identification that allows for roaming.

•

Support for RADIUS (Remote Authentication Dial In User Service, RFC 2138, 2139) for

centralized user profile and accounting management on a network RADIUS server.

•

Support for EAP (Extensible Authentication Protocol, RFC 2486) that allows additional

authentication methods to be deployed with no changes to the access point or the wireless

clients.

RADIUS

RADIUS is based on a client-server model that supports authentication, authorization and

accounting. The access point is the client and the server is the RADIUS server. The RADIUS

server handles the following tasks:

• Authentication

Determines the identity of the users.

• Authorization

Table 29

Wireless Security Levels

SECURITY

LEVEL

SECURITY TYPE

Least

Secure

Most Secure

Unique SSID (Default)

Unique SSID with Hide SSID Enabled

MAC Address Filtering

WEP Encryption

IEEE802.1x EAP with RADIUS Server Authentication

Wi-Fi Protected Access (WPA)

WPA2