D-Link DWS-4000 Series Cli Command Reference page 156

D-Link Unified Switch CLI Command Reference
no dos-control tcpflag
This command sets disables TCP Flag Denial of Service protections.
Format
no dos-control tcpflag
Mode Global Config
dos-control l4port
This command enables L4 Port Denial of Service protections. If the mode is enabled, Denial of Service prevention is active
for this type of attack. If packets ingress having Source TCP/UDP Port Number equal to Destination TCP/UDP Port Number,
the packets will be dropped if the mode is enabled.
Note: Some applications mirror source and destination L4 ports - RIP for example uses 520 for both. If you enable
dos-control l4port, applications such as RIP may experience packet loss which would render the application
inoperable.
Default disabled
Format
dos-control l4port
Mode Global Config
no dos-control l4port
This command disables L4 Port Denial of Service protections.
Format
no dos-control l4port
Mode Global Config
dos-control icmp
This command enables Maximum ICMP Packet Size Denial of Service protections. If the mode is enabled, Denial of Service
prevention is active for this type of attack. If ICMP Echo Request (PING) packets ingress having a size greater than the
configured value, the packets will be dropped if the mode is enabled.
Default disabled <512>
Format
dos-control icmp <0-1023>
Mode Global Config
no dos-control icmp
This command disables Maximum ICMP Packet Size Denial of Service protections.
Format
no dos-control icmp
Mode Global Config
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