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Wireless & Mobility · Intermediate

Extensible Authentication Protocol Tunneled Transport Layer Security (EAP-TTLS)

A tunneled EAP method using a server certificate that supports legacy inner methods such as PAP and CHAP.

Definition

EAP-TTLS establishes a TLS tunnel and then carries inner authentication as attribute-value pairs, allowing PAP, CHAP, MSCHAPv2, or EAP. It is popular in education and with non-Windows platforms. Like PEAP, it needs only a server certificate.

Exam tip

TTLS supports PAP inside the tunnel, which PEAP does not.

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