SMC Networks SMCGS10C-SMART Management Manual page 85

Allow Guest VLAN if EAPOL Seen - The switch remembers if an
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EAPOL frame has been received on the port for the lifetime 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 (the default), the
switch will only enter the Guest VLAN if an EAPOL frame has not been
received on the port for the lifetime of the port. If enabled, the switch
will consider entering the Guest VLAN even if an EAPOL frame has been
received on the port for the lifetime of the port. The value can only be
changed if the Guest VLAN option is globally enabled.
Port Configuration
Port – Port identifier.
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◆ Admin State - If NAS is globally enabled, this selection controls the
port's authentication mode. The following modes are available:
Force Authorized - The switch sends one EAPOL Success frame
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when the port link comes up. This forces the port to grant access to
all clients, either dot1x-aware or otherwise. (This is the default
setting.)
Force Unauthorized - The switch will send one EAPOL Failure
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frame when the port link comes up. This forces the port to deny
access to all clients, either dot1x-aware or otherwise.
Port-based 802.1X - Requires a dot1x-aware client to be
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authorized by the authentication server. Clients that are not dot1x-
aware will be denied access.
Single 802.1X - At most one supplicant can get authenticated on
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the port at a time. If more than one supplicant is connected to a
port, the one that comes first when the port's link comes up will be
the first one considered. If that supplicant doesn't provide valid
credentials within a certain amount of time, another supplicant will
get a chance. Once a supplicant is successfully authenticated, only
that supplicant will be allowed access. This is the most secure of all
the supported modes. In this mode, the Port Security module is
used to secure a supplicant's MAC address once successfully
authenticated.
Multi 802.1X - One or more supplicants can get authenticated on
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the same port at the same time. Each supplicant is authenticated
individually and secured in the MAC table using the Port Security
module.
In Multi 802.1X it is not possible to use the multicast BPDU MAC
address as the destination MAC address for EAPOL frames sent from
the switch towards the supplicant, since that would cause all
supplicants attached to the port to reply to requests sent from the
switch. Instead, the switch uses the supplicant's MAC address,
which is obtained from the first EAPOL Start or EAPOL Response
Identity frame sent by the supplicant. An exception to this is when
no supplicants are attached. In this case, the switch sends EAPOL
Request Identity frames using the BPDU multicast MAC address as
the destination - to wake up any supplicants that might be on the
port.
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| Configuring the Switch
C 4
HAPTER
Configuring Security