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User Manual for the NETGEAR 11 Mbps Wireless USB Adapter MA111
B-12 Wireless Networking Basics
202-10032-01
WPA Authentication: Enterprise-level User
Authentication via 802.1x/EAP and RADIUS
Figure B-1: WPA Overview
IEEE 802.1x offers an effective framework for authenticating and controlling user traffic to a
protected network, as well as providing a vehicle for dynamically varying data encryption keys via
EAP from a RADIUS server, for example. This framework enables using a central authentication
server, which employs mutual authentication so that a rogue wireless user does not join the
network.
It's important to note that 802.1x doesn't provide the actual authentication mechanisms. When
using 802.1x, the EAP type, such as Transport Layer Security (EAP-TLS) or EAP Tunneled
Transport Layer Security (EAP-TTLS) defines how the authentication takes place.
Note: For environments with a Remote Authentication Dial-In User Service (RADIUS)
infrastructure, WPA supports Extensible Authentication Protocol (EAP). For environments
without a RADIUS infrastructure, WPA supports the use of a preshared key.
Together, these technologies provide a framework for strong user authentication.
Windows XP implements 802.1x natively, and several Netgear switch and wireless access point
products support 802.1x.
WPA
enabled
wireless
client with
“supplicant”
Certificate
Authority
(eg Win
Server,
VeriSign,
etc)
TCP/IP
Ports Closed
Until
RADIUS Server
Wired Network with Optional
802.1x Port Based Network
Access Control
WPA enabled
Access Point
using
pre-shared key
or
802.1x
TCP/IP
Ports Opened
After
Authenticated
Wireless LAN
Login
Authentication
- User Manual for the 1
- NETGEAR 11 Mbps 1
- Wireless USB Adapter 1
- Technical Support 2
- Statement of Conditions 2
- FCC Information to User 3
- Export Restrictions 4
- Regulations 6
- Contents 7
- 202-10032-01 10
- Chapter 1 11
- About This Manual 11
- 1-2 About This Manual 12
- Chapter 2 13
- Introduction 13
- What’s in the Box? 14
- Introduction 2-3 15
- 2-4 Introduction 16
- Introduction 2-5 17
- Use printers in 18
- Chapter 3 19
- Basic Setup 19
- Two Basic Operating Modes 20
- Basic Setup 3-3 21
- Resource CD Main page 22
- InstallShield Wizard 22
- Basic Setup 3-5 23
- 3-6 Basic Setup 24
- Basic Setup 3-7 25
- 3-8 Basic Setup 26
- Basic Setup 3-9 27
- 3-10 Basic Setup 28
- Basic Setup 3-11 29
- 3-12 Basic Setup 30
- Table 3-1: LED Descriptions 30
- Troubleshooting 31
- Basic Tips 32
- Basic Setup 3-15 33
- 3-16 Basic Setup 34
- Chapter 4 35
- Configuration 35
- 4-2 Configuration 36
- Click the Profile tab 37
- 4. Click OK 39
- Settings 40
- Configuration 4-7 41
- 4-8 Configuration 42
- Click OK 43
- Statistics Page 44
- Advanced Settings Page 44
- Appendix A 45
- Technical Specifications 45
- A-2 Technical Specifications 46
- Appendix B 47
- Wireless Networking Basics 47
- Wireless Channels 48
- Authentication and WEP 50
- Open System Authentication 51
- Shared Key Authentication 51
- Overview of WEP Parameters 52
- Key Size 53
- WPA Wireless Security 54
- How Does WPA Compare to WEP? 55
- Wired Network with Optional 58
- 802.1x Port Based Network 58
- Access Control 58
- Wireless LAN 58
- Is WPA Perfect? 62
- Product Support for WPA 62
- Appendix C 65
- Verifying TCP/IP Properties 69
- 3. Type ipconfig /all 75
- 4. Type exit 75
- Glossary 77
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