ICMP Flood Protection for IPv6 version

ICMP Flood Protection functions identically to UDP Flood Protection, except it monitors for ICMPv4/ICMPv6 Flood Attacks. The only difference is that DNS queries are not allowed to bypass ICMP Flood Protection.

To configure ICMP Flood Protection for IPv4 version, navigate to Network > Firewall > Flood Protection > UDP > ICMP > IPv6 tab.

• Enable ICMPv6 Flood Protection – Enables ICMPv6 Flood Protection.

Enable ICMPv6 Flood Protection must be enabled to activate the other ICMPv6 Flood Protection options.

• ICMPv6 Flood Attack Threshold – The maximum number of ICMPv6 packets allowed per second to be sent to a host, range, or subnet. Exceeding this threshold triggers ICMPv6 Flood Protection. The minimum number is 10, the maximum number is 100000, and the default number is 200.
• ICMPv6 Flood Attack Blocking Time – After the appliance detects the rate of ICMPv6 packets exceeding the attack threshold for this duration of time, ICMPv6 Flood Protection is activated, and the appliance will begin dropping subsequent ICMPv6 packets. The minimum time is 1 second, the maximum time is 120 seconds, and the default time is 2 seconds.
• ICMPv6 Flood Attack Protected Destination List – The destination address object or address group that will be protected from ICMPv6 Flood Attack.

Select Any to apply the Attack Threshold to the sum of ICMPv6 packets passing through the firewall.

• Click Accept.