Ping of Death. It sounds as dangerous as it is. It can bring down your server and keep it that way for a long time using a simple tool like the ping command. A bit of modification of the packets of data and your server might have a serious problem.
What is Ping of Death?
Ping of Death or PoD is a Denial of Service attack (DoS attack) that uses a vulnerability connected to the ping command and the packet size. The attackers use the ping command and send data packets that are oversized. The normal size of an IPv4 packet of data, with its IP header, is 65 535 bytes, so everything that is above, like 65 536 bytes, will cause problems.