Dos-Control Tcpflag; Dos-Control L4Port - NETGEAR GSM7328Sv1 - ProSafe 24+4 Gigabit Ethernet L3 Managed Stackable Switch Cli Manual

dos-control tcpflag

This command enables TCP Flag Denial of Service protections. If the mode is enabled, Denial of
Service prevention is active for this type of attacks. If packets ingress having TCP Flag SYN set
and a source port less than 1024 or having TCP Control Flags set to 0 and TCP Sequence Number
set to 0 or having TCP Flags FIN, URG, and PSH set and TCP Sequence Number set to 0 or
having TCP Flags SYN and FIN both set, the packets will be dropped if the mode is enabled.
Default disabled
Format
dos-control tcpflag
Mode Global Config
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
Switching Commands
Managed Switch CLI Manual, Release 8.0
v1.0, July 2009
3-195