Netgear MA111v2 - 11 Mbps Wireless USB Adapter 사용자 설명서

B-12

Wireless Networking Basics

 

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 

Wired Network with Optional 

WPA enabled

Access Point 

using

pre-shared key 

or 

802.1x

TCP/IP

Ports Opened

After 

Authenticated

Wireless LAN