X-Micro Tech. XWL-11GRTX Manual Do Utilizador

 

 

58

amendment to the 802.11 standard. 

 

4.17 What 

is 

802.1x 

Authentication? 

 

802.1x is a framework for authenticated MAC-level access control, defines 

Extensible Authentication Protocol (EAP) over LANs (WAPOL). The standard 

encapsulates and leverages much of EAP, which was defined for dial-up 

authentication with Point-to-Point Protocol in RFC 2284. 

 

Beyond encapsulating EAP packets, the 802.1x standard also defines EAPOL 

messages that convey the shared key information critical for wireless security.     

 

4.18  What is Temporal Key Integrity Protocol (TKIP)?   

The Temporal Key Integrity Protocol, pronounced tee-kip, is part of the IEEE 

802.11i encryption standard for wireless LANs. TKIP is the next generation of 

WEP, the Wired Equivalency Protocol, which is used to secure 802.11 wireless 

LANs. TKIP provides per-packet key mixing, a message integrity check and a 

re-keying mechanism, thus fixing the flaws of WEP. 

 

4.19  What is Advanced Encryption Standard (AES)?   

Security issues are a major concern for wireless LANs, AES is the U.S. 

government’s next-generation cryptography algorithm, which will replace DES 

and 3DES. 

 

4.20  What is Inter-Access Point Protocol (IAPP)?   

The IEEE 802.11f Inter-Access Point Protocol (IAPP) supports Access Point 

Vendor interoperability, enabling roaming of 802.11 Stations within IP subnet. 

 

IAPP defines messages and data to be exchanged between Access Points and 

between the IAPP and high layer management entities to support roaming. The 

IAPP protocol uses TCP for inter-Access Point communication and UDP for 

RADIUS request/response exchanges. It also uses Layer 2 frames to update the 

forwarding tables of Layer 2 devices.   

 

4.21  What is Wireless Distribution System (WDS)?   

The Wireless Distribution System feature allows WLAN AP to talk directly to 

other APs via wireless channel, like the wireless bridge or repeater service. 

 

4.22  What is Universal Plug and Play (uPNP)? 

UPnP is an open networking architecture that consists of services, devices, and 

control points. 

The ultimate goal is to allow data communication among all UPnP