Update with your book title 957Configuring Device SwitchingThis section provides all system operation and general information for configuring network security,ports, Address tables, GARP, VLANs, Spanning Tree, Port Aggregation, and Multicast Support.Configuring Network SecurityThe device enables network security through both Access Control Lists and Locked Ports.Port Based Authentication (802.1x)Port based authentication enables authenticating system users on a per-port basis via a externalserver. Only authenticated and approved system users can transmit and receive data. Ports areauthenticated via the RADIUS server using the Extensible Authentication Protocol (EAP). PortAuthentication includes:• Authenticators — Specifies the port that is authenticated before permitting system access.• Supplicants — Specifies host connected to the authenticated port requesting to access the systemservices.• Authentication Server — Specifies the external server, for example, the RADIUS server thatperforms the authentication on behalf of the authenticator, and indicates whether the user isauthorized to access system services.Port based authentication creates two access states:• Controlled Access — Permits communication between the user and the system, if the user isauthorized.• Uncontrolled Access — Permits uncontrolled communication regardless of the port state.The device currently supports Port Based Authentication via RADIUS servers.Advanced Port Based AuthenticationAdvanced Port Based Authentication enables multiple hosts to be attached to a single port.Advanced Port Based Authentication requires only one host to be authorized for all hosts to havesystem access. If the port is unauthorized all attached hosts are denied access to the network.Advanced Port Based Authentication also enables user based authentication. Specific VLANs in thedevice are always available, even if specific ports attached to the VLAN are unauthorized. Forexample, Voice over IP does not require authentication, while data traffic requires authentication.VLANs for which authorization is not required can be defined. Unauthenticated VLANs areavailable to users, even if the ports attached to the VLAN are defined as authorized.
