Extensible Authentication Protocol - Transport Layer Security (Eap-Tls) - Cisco 8821 Manual

If anonymous PAC provisioning is not allowed in the production wireless LAN environment then a staging RADIUS server can
be setup for initial PAC provisioning of the Cisco Wireless IP Phone 8821 and 8821-EX.
This requires that the staging RADIUS server be setup as a slave EAP-FAST server and components are replicated from the
product master EAP-FAST server, which include user and group database and EAP-FAST master key and policy info.
Ensure the production master EAP-FAST RADIUS server is setup to send the EAP-FAST master keys and policies to the
staging slave EAP-FAST RADIUS server, which will then allow the Cisco Wireless IP Phone 8821 and 8821-EX to use the
provisioned PAC in the production environment where Allow anonymous in-band PAC provisioning is disabled.
When it is time to renew the PAC, then authenticated in-band PAC provisioning will be used, so ensure that Allow
authenticated in-band PAC provisioning is enabled.
Ensure that the Cisco Wireless IP Phone 8821 and 8821-EX has connected to the network during the grace period to ensure it
can use its existing PAC created either using the active or retired master key in order to get issued a new PAC.
Is recommended to only have the staging wireless LAN pointed to the staging RADIUS server and to disable the staging access
point radios when not being used.

Extensible Authentication Protocol - Transport Layer Security (EAP-TLS)

Extensible Authentication Protocol - Transport Layer Security (EAP-TLS) is using the TLS protocol with PKI to secure
communications to the authentication server.
TLS provides a way to use certificates for both user and server authentication and for dynamic session key generation.
A certificate is required to be installed.
EAP-TLS provides excellent security, but requires client certificate management.
Cisco Wireless IP Phone 8821 and 8821-EX Wireless LAN Deployment Guide
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