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DGS-3100 Series Gigabit Stackable Managed Switch User Manual
99
Configuring Port Authentication 802.1X
Port-based authentication authenticates users on a per-port/per mac basis via an external server. Only authenticated and
approved system users can transmit and receive data. Ports are authenticated via the RADIUS server using the Extensible
Authentication Protocol (EAP). The 802.1x Access Control protocol consists of the following vital components which
stabilize Access Control Security:
Component Description
Authenticators
The Authenticator is an intermediary between the Authentication Server and the Client. The
authenticator:
Requests certification information via the Client (EAPOL packets). The EAPOL packets
are the only information allowed to pass between supplicants and the authentication server
until the authenticator is granted system access.
Verifies the information gathered from the Client with the Authentication Server, and
relays the information to the Client.
Supplicants/Clients
Specifies the host connected to the authenticated port requesting to access the system services.
Authentication Server
Specifies the server that performs the authentication on behalf of the authenticator, and
indicates whether the supplicant is authorized to access system services. The Authentication
Server is a remote device connected to the Client network and Authenticator. The
Authentication Server must have RADIUS Server application enabled and configured. Clients
connected to a port on the Switch must be authenticated by the Authentication Server before
accessing any system services. The Authentication Server certifies the client’s identity
attempting to access the network by exchanging secure information between the RADIUS
server and the Client.
Port-based authentication creates two access states:
State Description
Controlled Access
Permits communication between the supplicant and the system, if the supplicant is authorized.
Uncontrolled Access
Permits uncontrolled communication regardless of the port state.