Advanced Wireless Communications MINI PRO Guía de usuario descargar pdf (Pagina 79)

NOTE: CKIP is not used with WPA/WPA2 Personal/Enterprise network authentication.

NOTE: CKIP is only supported through the use of the WiFi connection utility on Windows XP.

Fast Roaming (CCKM)

When a wireless LAN is configured for fast reconnection, a LEAP-enabled client device can

roam from one access point to another without involving the main server. Using Cisco

Centralized Key Management (CCKM), an access point configured to provide Wireless

Domain Services (WDS) takes the place of the RADIUS server and authenticates the client

without perceptible delay in voice or other time-sensitive applications.

Mixed-Cell Mode

Some access points, for example Cisco 350 or Cisco 1200, support environments in which

not all client stations support WEP encryption; this is called Mixed-Cell Mode. When these

wireless network operate in "optional encryption" mode, client stations that join in WEP

mode send all messages encrypted, and stations that use standard mode send all messages

unencrypted. These access points broadcast that the network does not use encryption, but

allows clients that use WEP mode to join. When Mixed-Cell is enabled in a profile, it lets you

connect to access points that are configured for "optional encryption."

Radio Management

When this feature is enabled your WiFi adapter provides radio management information to

the Cisco infrastructure. If the Cisco Radio Management utility is used on the infrastructure

it configures radio parameters, detects interference and rogue access points.

EAP-FAST

EAP-FAST, like EAP-TTLS and PEAP, uses tunneling to protect traffic. The main difference is

that EAP-FAST does not use certificates to authenticate. Provisioning in EAP-FAST is

negotiated solely by the client as the first communication exchange when EAP-FAST is

requested from the server. If the client does not have a pre-shared secret Protected Access

Credential (PAC), it is able to initiate a provisioning EAP-FAST exchange to dynamically

obtain one from the server.

EAP-FAST documents two methods to deliver the PAC: manual delivery through an out-of-

band secure mechanism and automatic provisioning.

● Manual delivery mechanisms are any delivery mechanism that the administrator of the

network considers sufficiently secure.

● Automatic provisioning establishes an encrypted tunnel to protect the authentication

of the client and the delivery of the PAC to the client. This mechanism, while not as

secure as a manual method may be, is more secure than the authentication method

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Advanced Wireless Communications MINI PRO Guía de usuario Pagina 79