ZyXEL Communications Vantage RADIUS 50 User Manual page 180

Vantage RADIUS User's Guide
LEAP
LEAP (Light Extensible Authentication Protocol) is a Cisco implementation of IEEE802.1x.
For added security, certificate-based authentications (EAP-TLS, EAP-TTLS and PEAP) use dynamic keys
for data encryption. They are often deployed in corporate environments, but for public deployment, a
simple user name and password pair is more practical.
G-2 Types of EAP Authentication