Korenix JetNet 5228G Series, User Manual

Page: 143 / 658

Client Security
3-97
3
Network Access
(
MAC Address Authentication)
Some devices connected to switch ports may not be able to support 802.1X
authentication due to hardware or software limitations. This is often true for devices
such as network printers, IP phones, and some wireless access points. This switch
enables network access from these devices to be controlled by authenticating
device MAC addresses with a central RADIUS server.
Notes: 1. RADIUS authentication must be activated and configured properly for the
MAC Address authentication feature to work properly. (See “RADIUS Client”
on page 4-88.)
2.
MAC authentication cannot be configured on trunk ports.
Command Usage
• Network Access authentication controls access to the network by authenticating
the MAC address of each host that attempts to connect to a switch port. Traffic
received from a specific MAC address is forwarded by the switch only if the source
MAC address is successfully authenticated by a central RADIUS server. While
authentication for a MAC address is in progress, all traffic is blocked until
authentication is completed. On successful authentication, the RADIUS server
may optionally assign VLAN settings for the switch port.
• When enabled on a port, the authentication process sends a Password
Authentication Protocol (PAP) request to a configured RADIUS server. The
username and password are both equal to the MAC address being authenticated.
• On the RADIUS server, PAP username and passwords must be configured in the
MAC address format XX-XX-XX-XX-XX-XX (all in upper case).
• Authenticated MAC addresses are stored as dynamic entries in the switch secure
MAC address table and are removed when the aging time expires. The maximum
number of secure MAC addresses supported for the switch system is 1024.
• Configured static MAC addresses are added to the secure address table when
seen on a switch port. Static addresses are treated as authenticated without
sending a request to a RADIUS server.
• When port status changes to down, all MAC addresses are cleared from the secure
MAC address table. Static VLAN assignments are not restored.
• The RADIUS server may optionally return a VLAN identifier list to be applied to the
switch port. The following attributes need to be configured on the RADIUS server.
- Tunnel-Type = VLAN
- Tunnel-Medium-Type = 802
- Tunnel-Private-Group-ID = 1u,2t [ VLAN ID list ]
The VLAN identifier list is carried in the RADIUS “Tunnel-Private-Group-ID”
attribute. The VLAN list can contain multiple VLAN identifiers in the format
“1u,2t,3u” where “u” indicates an untagged VLAN and “t” a tagged VLAN.