ZyXEL Communications P-870HN-51B, Поддержка заметок

Страница: 119 / 124

P-870HN-51b Support Notes
All contents copyright (c) 2009 ZyXEL Communications Corporation.
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. Key difference between WPA and WEP are user authentication and improve
data encryption.
What is WPA-PSK?
WPA-PSK (Wi-Fi Protected Access Pre-Shared Key) can be used if user do not have a
Radius server but still want to benefit from it. Because WPA-PSK only requires a
single password to be entered on wireless AP/gateway and wireless client. As long
as the passwords match, a client will be granted access to the WLAN.