This attack exploits weaknesses in the TCP connection sequence, known as a three-way handshake. SYN Flood: A succession of SYN requests is directed to the target’s system in an attempt to overwhelm it.UDP Flood, TCP Flood, NTP Amplification and DNS Amplification are some examples. Volumetric attacks are easy to generate by employing simple amplification techniques, so these are the most common forms of attack. Volumetric Attacks send high volumes of traffic in an effort to saturate a victim’s bandwidth.