TL-SL3428_V3_User_Guide - TP-Link

DoS Protection:Allows you to Enable/Disable DoS Defend function.‣ Defend TableSelect:Defend Type:Select the entry to enable the corresponding Defend Type.Displays the Defend Type name.Tips: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 necessaryto 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 andblock the unnecessary network services.3. Enhance the network security via the protection devices, such as the hardware firewall.11.4 802.1XThe 802.1X protocol was developed by IEEE802 LAN/WAN committee to deal with the securityissues of wireless LANs. It was then used in Ethernet as a common access control mechanism forLAN ports to solve mainly authentication and security problems.802.1X is a port-based network access control protocol. It authenticates and controls devicesrequesting for access in terms of the ports of LAN access control devices. With the 802.1Xprotocol 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.‣ Architecture of 802.1X Authentication802.1X adopts a client/server architecture with three entities: a supplicant system, anauthenticator system, and an authentication server system, as shown in the following figure.Figure 11-17 Architecture of 802.1X authentication(1) Supplicant System: The supplicant system is an entity in LAN and is authenticated by theauthenticator system. The supplicant system is usually a common user terminal computer.An 802.1X authentication is initiated when a user launches client program on the157