KTI Networks KGS-1064-HP User Manual page 58

Port Configuration
Port
Admin State
life-time of the port. Once the switch considers whether to enter the Guest VLAN, it
will first check if this option is enabled or disabled. If disabled (unchecked; default),
the switch will only enter the Guest VLAN if an EAPOL frame has not been received
on the port for the life-time of the port. If enabled (checked), the switch will consider
entering the Guest VLAN even if an EAPOL frame has been received on the port for
the life-time of the port. The value can only be changed if the Guest VLAN option is
globally enabled.
Description
The port number for which the configuration below applies.
If NAS is globally enabled, this selection controls the port's authentication mode. The
following modes are available:
Force Authorized: In this mode, the switch will send one EAPOL Success frame
when the port link comes up, and any client on the port will be allowed network
access without authentication.
Force Unauthorized: In this mode, the switch will send one EAPOL Failure frame
when the port link comes up, and any client on the port will be disallowed network
access.
Port-based 802.1X: In the 802.1X-world, the user is called the supplicant, the switch
is the authenticator, and the RADIUS server is the authentication server. The
authenticator acts as the man-in-the-middle, forwarding requests and responses
between the supplicant and the authentication server. Frames sent between the
supplicant and the switch are special 802.1X frames, known as EAPOL (EAP Over
LANs) frames. EAPOL frames encapsulate EAP PDUs (RFC3748). Frames sent
between the switch and the RADIUS server are RADIUS packets. RADIUS packets
also encapsulate EAP PDUs together with other attributes like the switch's IP address,
name, and the supplicant's port number on the switch. EAP is very flexible, in that it
allows for different authentication methods, like MD5-Challenge, PEAP, and TLS.
The important thing is that the authenticator (the switch) doesn't need to know which
authentication method the supplicant and the authentication server are using, or how
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