Smurf Attack is a type of DDoS Attack, which floods the system with the spoofed ping messages. The attack has an amplification vector that increases the damage by exploiting the characteristics of the broadcast network. The attack swamps the internet with the replies to ICMP echo requests.
Distributed Denial Of Service Attack (DDoS)
Distributed Denial Of Service (DDoS) is a form of cyber attack which is done to make target online services unavailable to the users. The attack disrupts the normal traffic of a targeted server, network or service by overwhelming the target or its surrounding infrastructure