TP-Link TL-SL3428 User Manual page 165

The following entries are displayed on this screen:
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You are suggested to take the following further steps to ensure the network security.
1. It's recommended to inspect and repair the system vulnerability regularly. It is also necessary
to install the system bulletins and backup the important information in time.
2. The network administrator is suggested to inspect the physic environment of the network and
block the unnecessary network services.
3. Enhance the network security via the protection devices, such as the hardware firewall.
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The 802.1X protocol was developed by IEEE802 LAN/WAN committee to deal with the security
issues of wireless LANs. It was then used in Ethernet as a common access control mechanism for
LAN ports to solve mainly authentication and security problems.
802.1X is a port-based network access control protocol. It authenticates and controls devices
requesting for access in terms of the ports of LAN access control devices. With the 802.1X
protocol enabled, a supplicant can access the LAN only when it passes the authentication,
whereas those failing to pass the authentication are denied when accessing the LAN.
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802.1X adopts a client/server architecture with three entities: a supplicant system, an
authenticator system, and an authentication server system, as shown in the following figure.
（1） Uwrrnkecpv"U{uvgo< The supplicant system is an entity in LAN and is authenticated by the
authenticator system. The supplicant system is usually a common user terminal computer.
Allows you to Enable/Disable DoS Defend function.
Select the entry to enable the corresponding Defend Type.
Displays the Defend Type name.
Figure 11-17 Architecture of 802.1X authentication
157