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Configuring ICMP Flood Attack Screen

This topic describes how to configure detection of an ICMP flood attack.

An ICMP flood typically occurs when an ICMP echo request overloads the victim with many requests such that the ICMP echo request spends all its resources responding until it can no longer process valid network traffic. When enabling the ICMP flood protection feature, you can set a threshold that, once exceeded, invokes the ICMP flood attack protection feature.

To enable detection of an ICMP flood attack:

  1. Configure interfaces and assign an IP address to interfaces.
  2. Configure security zones trustZone and untrustZone and assign interfaces to them.
  3. Configure security policies from untrustZone to trustZone.
  4. Configure security screens and attach them to untrustZone.
  5. Configure syslog.
  6. Commit the configuration.