Authentication Process - D-Link DES-6500 Manual

Authentication Process

Utilizing the three roles stated above, the 802.1x protocol provides a stable and secure way of authorizing and
authenticating users attempting to access the network. Only EAPOL traffic is allowed to pass through the specified port
before a successful authentication is made. This port is "locked" until the point when a Client with the correct username
and password (and MAC address if 802.1x is enabled by MAC address) is granted access and therefore successfully
"unlocks" the port. Once unlocked, normal traffic is allowed to pass through the port. The following figure displays a more
detailed explanation of how the authentication process is completed between the three roles stated above.
The D-Link implementation of 802.1x allows network administrators to choose between two types of Access Control used
on the Switch, which are:
1. Port-Based Access Control – This method requires only one user to be authenticated per port by a remote RADIUS
server to allow the remaining users on the same port access to the network.
2. MAC-Based Access Control – Using this method, the Switch will automatically learn up to sixteen MAC
addresses by port and set them in a list. Each MAC address must be authenticated by the Switch using a remote
RADIUS server before being allowed access to the Network.
DES-6500 Chassis-based Layer 3 Ethernet Switch Manual
Figure 6- 88. The 802.1x Authentication Process
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