D-Link DGS-3200-16 User Manual - Page 121
X (Port-Based and Host-Based Access Control), Parameter, Description, VLAN Name
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xStack® DGS-3200 Series Layer 2 Gigabit Ethernet Managed Switch Parameter Description VLAN Name Port Enter the pre-configured VLAN name to create as an 802.1X guest VLAN. Set the ports to be enabled for the 802.1X guest VLAN. Click Apply to implement the 802.1X guest VLAN settings entered. Only one VLAN may be assigned as the 802.1X guest VLAN. 802.1X (Port-Based and Host-Based Access Control) The IEEE 802.1X standard is a security measure for authorizing and authenticating users to gain access to various wired or wireless devices on a specified Local Area Network by using a Client and Server based access control model. This is accomplished by using a RADIUS server to authenticate users trying to access a network by relaying Extensible Authentication Protocol over LAN (EAPOL) packets between the Client and the Server. The following figure represents a basic EAPOL packet: Figure 5 - 15. The EAPOL Packet Utilizing this method, unauthorized devices are restricted from connecting to a LAN through a port to which the user is connected. EAPOL packets are the only traffic that can be transmitted through the specific port until authorization is granted. The 802.1X Access Control method has three roles, each of which are vital to creating and upkeeping a stable and working Access Control security method. Figure 5 - 16. The three roles of 802.1X The following section will explain the three roles of Client, Authenticator and Authentication Server in greater detail. 108