802.1x Configuration
419
follows:
EAP-MD5
EAP-TLS
（
Transport Layer Security
）
EAP-TTLS
（
Tunneled Transport Layer Security
）
PEAP
（
Protected Extensible Authentication Protocol
）
They will be described in detail in the following part.
Attention:
The switch, as the access controlling unit of Pass-through, will not check the
content of a particular EAP method, so can support all the EAP methods above
and all the EAP authentication methods that may be extended in the future.
In EAP relay, if any authentication method in EAP-MD5, EAP-TLS, EAP-TTLS
and PEAP is adopted, the authentication methods of the supplicant system and
the RADIUS server should be the same.
1. EAP-MD5 Authentication Method
EAP-MD5 is an IETF open standard which providing the least security, since MD5
Hash function is vulnerable to dictionary attacks.
The following figure illustrated the basic operation flow of the EAP-MD5
authentication method.