Iuwne10 S04 L03

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WLAN Security

Centralizing WLAN Authentication

© 2008 Cisco Systems, Inc. All rights reserved. IUWNE v1.0—4-2

802.1X

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802.1X over Wireless

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Unique Encryption Keys

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EAP Process

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EAP Frame Format

EAP defines four message types: Request, Response, Success, and Failure

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RADIUS

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Security > AAA > RADIUS > Authentication

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Security > AAA > RADIUS > Authentication > New

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WLAN > Edit > Security > AAA Servers

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Local EAP

The following EAP methods are supported with local EAP:

− LEAP

− EAP-FAST (both username and password with PAC and certificates)

− EAP-TLS

− PEAP

MAC authentication is also supported in addition to the above methods

Local EAP authentication can be used if the Cisco WLC fails to reach the configured RADIUS servers

Supports local users or LDAP users

Requires WLAN configuration

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Security > Local EAP > Profiles

Local EAP is created in three steps: Creation and configuration of an EAP profile

Creation of local users or delegation to an LDAP server

Validation of the EAP profile in a WLAN

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Security > Local EAP > Profiles > Edit

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Security > Local EAP > EAP-FAST Parameters

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Security > AAA > Local Net Users

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Security > Local EAP > Authentication Priority

Only LDAP is used

LDAP is used only if the local list does not contain the user

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Security >AAA > LDAP

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WLAN > Edit

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Summary

802.1X allows a port to be blocked while the client is authenticated.

EAP creates a framework to carry the typical steps in an authentication process.

WLAN controllers can relay the wireless client authentication task to an external RADIUS server.

WLAN controllers can also be configured to handle EAP locally, based on an internal user database or an external LDAP server.

© 2008 Cisco Systems, Inc. All rights reserved. IUWNE v1.0—4-20