ICMP (Ping) Flood:ICMP flood overwhelms the target resource with ICMP Echo Request (ping) packets​ SYN Flood:SYN flood DDoS attack sends multiple SYN requests. SYN-ACK Flood: exhaust a server’s resources. Ping of Death:POD attack is sending ICMP multiple malformed or malicious pings to a server. HTTP Flood:Exploits seemingly-legitimate HTTP GET or POST requests. DNS Flood:send valid but spoofed DNS request packets. ACK Fragmentation Flood:Fragmented ACK packets are used in this bandwidth consuming version of the ACK & PUSH ACK Flood attack. IP Null Attack:Packets contain IPv4 headers which carry information about which Transport Protocol is being used. When attackers set the value of this field to zero, these packets can bypass security measures designed to scan TCP, IP, and ICMP.