D-Link DGS-3130 User Manual - Page 319

DGS-3130 Series Layer 3 Stackable Managed Switch Web UI Reference Guide ping packet is illegal according to networking protocol, but a packet of such a size can be sent if it is fragmented; when the target computer reassembles the packet, a buffer overflow can occur, which often causes a system crash.  TCP Tiny Fragment Attack: The Tiny TCP Fragment attacker uses IP fragmentation to create extremely small fragments and force the TCP header information into a separate packet fragment to pass through the check function of the router and issue an attack.  All Types: All of above types. To view the following window, click Security > DoS Attack Prevention Settings, as shown below: Figure 9-86 DoS Attack Prevention Settings Window The fields that can be configured in SNMP Server Enable Traps DoS Settings are described below: Parameter Trap State Description Select to enable or disable the DoS attack prevention trap state here. Click the Apply button to accept the changes made. The fields that can be configured in DoS Attack Prevention Settings are described below: Parameter DoS Type Selection State Action Description Tick the DoS type option that will be prevented here. Select to enable or disable the global DoS attack prevention state here. Select the action that will be taken when the DoS attack was detected here. The only option to select here is Drop. Click the Apply button to accept the changes made. SSH Secure Shell (SSH) is a program allowing secure remote login and secure network services over an insecure network. It allows a secure login to remote host computers, a safe method of executing commands on a remote end node, and 309