TP-Link T2500-28TCTL-SL5428E T2500-28TCUN V1 User Guide - Page 231
DoS Defend, DoS Attack Type, Description, Network Security, DoS Defend, Defend Config
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DoS Attack Type Description Ping Of Death ICMP ECHO Request Packet whose sum of "Fragment Offset" and "Total Length" fields in the IP header is greater than 65535 may cause Ping of Death attack. As the maximum packet length of an IPv4 packet including the IP header is 65,535 bytes, many computer systems could not properly handle this malformed or malicious ICMP ECHO Request Packet. Thus, the hosts may break down or reboot automatically when receive this kind of packet. Table 13-1 Defendable DoS Attack Types 13.5.1 DoS Defend On this page, you can enable the DoS Defend type appropriate to your need. Choose the menu Network Security→DoS Defend→DoS Defend to load the following page. Figure 13-18 DoS Defend The following entries are displayed on this screen: Defend Config DoS Defend: Allows you to Enable/Disable DoS Defend function. Ping Limiting: Specify the transmission rate of the Ping packets when the Defend Type Ping Flooding is enabled. SYN Limiting: Specify the transmission rate of the SYN/SYN-ACK packets when the Defend Type SYN/SYN-ACK Flooding is enabled. Defend Table Select: Select the entry to enable the corresponding Defend Type. 221