ZyXEL Communications SBG Series Support Notes page 37

ZyXEL – SBG Support Notes
What is the difference between No authentication required, No
access allowed and Authentication required?
No authentication required — disables 802.1X and causes the port to
transition to the authorized state without any authentication exchange
required. The port transmits and receives normal traffic without
802.1x-based authentication of the client.
No access allowed — causes the port to remain in the unauthorized state,
ignoring all attempts by the client to authenticate. The switch cannot
provide authentication services to the client through the interface.
Authentication required — enables 802.1x and causes the port to begin in
the unauthorized state, allowing only EAPOL frames to be sent and
received through the port. The authentication process begins when the link
state of the port transitions from down to up, or when an EAPOL-start
frame is received. The switch requests the identity of the client and begins
relaying authentication messages between the client and the
authentication server. Each client attempting to access the network is
uniquely identified by the switch by using the client's MAC address.
What is AAA?
AAA is the acronym for Authentication, Authorization, and Accounting and
refers to the idea of managing subscribers by controlling their access to the
network, verifying that they are who they say they are (via login name and
password or MAC address) and accounting for their network usage.
What is RADIUS?
RADIUS stands for Remote Authentication Dial-In User Service. RADIUS is
a standard that has been implemented into several software packages and
networking devices. It allows user information to be sent to a central
database running on a RADIUS server, where it is verified. RADIUS also
provides a mechanism for accounting.
What is WPA?
WPA (Wi-Fi Protected Access) is a subset of the IEEE 802.11i security
specification draft. The key difference between WPA and WEP are user
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