https://ddos-guard.net/terms/ddos-attack-types/icmp-flood
What Is ICMP Flood? | Knowledge Base DDoS-Guard
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https://documentation.avaya.com/en-us/home/bundle/sbc/avayasbcoverviewandspecification_r10_2/protection-against-layer-3-and-layer-4-floods-and-/icmp-flood-prevention.html
ICMP flood prevention
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