Define ICMP Filtering
The ICMP Filtering page enables the blocking of ICMP packets from certain sources. This can reduce the load on the network in case of an ICMP attack.
To define ICMP filtering:
- Click Security > Denial of Service Prevention > ICMP Filtering. The ICMP Filtering page displays.
- Click Add. The Add ICMP Filtering page displays.
- Enter the parameters.
- Interface--Select the interface on which the ICMP filtering is being defined.
- IP Address--Enter the IPv4 address for which the ICMP packet filtering is activated or select All Addresses to block ICMP packets from all source addresses. If you enter the IP address, enter either the mask or prefix length.
- Network Mask--Select the format for the subnet mask for the source IP address, and enter a value in one of the field:
- Click Apply. The ICMP filtering is defined, and the Running Configuration is updated.