Use Protected Access

Chapter 3 Configuring EAP Types

Configuring EAP-FAST

Table 3-1

Connection Settings (continued)

 

 

Connection Settings

Description

 

 

Use Protected Access

Check this box to enable the use of a PAC to establish a tunnel. When

Credential (PAC)

this box is checked, PAC provisioning is requested. If this box is not

 

 

checked, EAP-FAST acts as PEAP and uses only the authenticated

 

 

server certificate to establish the tunnel every time.

 

 

The PAC is a unique shared credential used to mutually authenticate

 

 

a client and a server. The PAC is associated with a specific client

 

 

username and a server authority ID. A PAC removes the need for PKI

 

 

and digital certificates. The PAC is distributed or imported to the

 

 

client automatically or manually.

 

 

Manual PAC provisioning generates the PAC file locally on the AAA

 

 

or EAP-FAST server. With manual provisioning, the user credentials

 

 

are supplied to the server to generate the PAC file for that user. This

 

 

PAC must then be manually installed on the client device.

 

 

Default: On

 

 

Allow automatic PAC

Check this box to enable the automatic retrieval of a PAC during

provisioning

 

EAP-FAST authentication.

 

 

Automatic PAC provisioning enables the automatic retrieval of a PAC

 

 

during EAP-FAST authentication. Automatic PAC provisioning uses

 

 

TLS with a Diffie-Hellman Key Agreement protocol to establish a

 

 

secure tunnel. In addition, MSCHAPv2 is used to authenticate the

 

 

client and for early man-in-the-middle (MITM) attack detection.

 

 

Default: On

 

 

 

PAC Authority

 

Select a PAC authority from the drop-down list.

 

 

Default: None

 

 

Note The drop-down list contains the names of all of the PAC

 

 

authorities from which you have previously provisioned a

 

 

tunnel PAC. If you have not provisioned a PAC, then "none"

 

 

is the only option. You can also select "none" to force the host

 

 

to request provisioning a PAC.

 

 

 

Import

 

Click the Import button to manually import a PAC file. When you

 

 

click on this button, the Import Protected Access Credentials (PAC)

 

 

File window appears. If you need to enter a password for the PAC file

 

 

that you have selected, a password window will appear.

 

 

After you have selected and imported a valid PAC file, the PAC

 

 

authority is added to the PAC authority drop-down list.

 

 

Default: Enabled

 

 

 

Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide for Windows Vista

 

OL-16534-01

3-7

 

 

 

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Cisco Systems CB21AG, PI21AG manual Default On, Default None, Default Enabled, Use Protected Access