1.5 Prerequisites/Preconditions
PEAP requires the inner EAP authentication method to be configured both on the PEAP peer and the server in an implementation-specific manner. EAP and TLS have their own prerequisites, as specified in [RFC3748] section 3.1 and [RFC2246] section D.2, respectively.
For example, TLS server authentication, which PEAP uses, requires that the server have a certificate and that the client be configured to trust the issuer of the certificate. EAP requires that both EAP server and peer be configured with the methods which they support, in this case PEAP.