xStack
®
DGS-3200 Series Layer 2 Gigabit Ethernet Managed Switch
145
802.1X & IMPB Mode
Figure 5 - 56. 802.1X & IMPB Mode
This mode adds an extra layer of security by checking the IP MAC-Binding Port Binding (IMPB) table before trying one of the
supported authentication methods. The IMPB Table is used to create a ‘white list’ that checks if the IP streams being sent by
authorized hosts have been granted or not. In the above diagram the Switch port has been configured to allow clients to
authenticate using 802.1X. If the client is in the IMPB table and tries to connect to the network using this authentication method
and the client is listed in the white list for legal IP/MAC/port checking, access will be granted. If a client fails one of the
authentication methods, access will be denied.
IMPB & WAC/JWAC Mode
Figure 5 - 57. IMPB & WAC/JWAC Mode
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