D-Link DGS-3426 User Manual - Page 224
Port-Based Network Access Control, Example of Typical Port-Based Configuration
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xStack DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch Port-Based Network Access Control Ethernet Switch RADIUS Server 802.1X Client 802.1X 802.1X 802.1X Client Client Client 802.1X Client 802.1X Client 802.1X Client ... 802.1X Client 802.1X Client Network access controlled port Network access uncontrolled port Figure 10- 11. Example of Typical Port-Based Configuration Once the connected device has successfully been authenticated, the Port then becomes Authorized, and all subsequent traffic on the Port is not subject to access control restriction until an event occurs that causes the Port to become Unauthorized. Hence, if the Port is actually connected to a shared media LAN segment with more than one attached device, successfully authenticating one of the attached devices effectively provides access to the LAN for all devices on the shared segment. Clearly, the security offered in this situation is open to attack. 210
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