Define SYN Filtering
The SYN Filtering page enables filtering TCP packets that contain a SYN flag, and are destined for one or more ports.
To define a SYN filter:
- Click Security > Denial of Service Prevention > SYN Filtering. The SYN Filtering page displays.
- Click Add. The Add SYN Filtering page displays.
- Enter the parameters.
- Interface--Select the interface on which the filter is defined.
- IPv4 Address--Enter the IP address for which the filter is defined, or select All Addresses.
- Network Mask--Enter the network mask for which the filter is enabled in IP address format.
- TCP Port--Select the destination TCP port being filtered:
- Click Apply. The SYN filter is defined, and the Running Configuration file is updated.