AAA, NAC, Guest Access & BYOD

Client authentication failed -EAP Transaction failed - EAP-PEAP: Fatal alert by client - unknown_ca

by ‎03-10-2016 12:31 AM - edited ‎03-10-2016 12:31 AM
Q:

Client authentication failed -EAP Transaction failed - EAP-PEAP: Fatal alert by client - unknown_ca while using self-signed certificate as radius server certificate by Clearpass.



A:

This is an expected behavior when self-signed cert is used as radius server cert since the self-signed cert root CA is not in the trusted list. We could avoid this issue by either installing the root CA of self-signed cert in the client's trusted CA list or configuring the client's wireless profile to ignore the radius server certification validation.

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