Denial-of-service (DoS) attack

An attack that tries to prevent access to a service for legitimate users by overwhelming the network or server

Ping of death

Sending ping that’s larger than what internet protocols can handle causing it to cause buffer overflow. Can cause computer to crash or execute malicious code.

Ping flood

ICMP echo request, expecting same number of icmp echo replies. If a computer can’t keep up, it will be taken down.

SYN flood

flooding server with SYN packets. Causing it to send SYN-ACK packets. But hacker doesn’t send ACK message causing the connection to stay open and taking up server’s resources. Half open attacks.

Distributed denial-of-sevice attack(DDoS)

A DoS attack using multiple systems