PLANET WGSW-50040 - Manual (Page 203)

25-9
Figure 25-10 the Authentication Flow of 802.1x EAP-TLS
3. EAP-TTLS Authentication Method
EAP-TTLS is a product of the cooperation of Funk Software and Certicom. It can provide an authentication as
strong as that provided by EAP-TLS, but without requiring users to have their own digital certificate. The only
request is that the Radius server should have a digital certificate. The authentication of users’ identity is
implemented with passwords transmitted in a safely encrypted tunnel established via the certificate of the
authentication server. Any kind of authentication request including EAP, PAP and MS-CHAPV2 can be
transmitted within TTLS tunnels.
4. PEAP Authentication Method
EAP-PEAP is brought up by Cisco, Microsoft and RAS Security as a recommended open standard. It has long
been utilized in products and provides very good security. Its design of protocol and security is similar to that
of EAP-TTLS, using a server’s PKI certificate to establish a safe TLS tunnel in order to protect user
authentication.