Protected Extensible Authentication Protocol (PEAP) is the most popular version of EAP in use. This is the EAP mechanism shipped natively with Windows.
PEAP has two versions:
PEAP uses server-side certificates for validation of the RADIUS server. Almost all attacks on PEAP leverage misconfigurations in certificate validation.
In the next lab, we will take look at how to crack PEAP when certificate validation is turned off on the client.