死亡之Ping，（英文：ping of death, POD），是一种向目标电脑发送错误封包的或恶意的ping指令的攻击方式。通常，一次ping大小为32字节（若考虑IP标头则为84字节）。在当时，大部分电脑无法处理大于IPv4最大封包大小（65,535字节）的ping封包。因此发送这样大小的ping可以令目标电脑崩溃。

在早期TCP/IP的实现中，这攻击方式很容易实现，能影响到众多系统，如Unix、Linux、Mac、Windows、打印机、路由器等。这是一种专门针对一种弱点的非常简单的攻击。在1997-1998年后几乎所有的现代系统都已经修正了这问题。

A ping of death is a type of attack on a computer system that involves sending a malformed or otherwise malicious ping to a computer.

A correctly-formed ping packet is typically 56 bytes in size, or 84 bytes when the Internet Protocol header is considered. However, any IPv4 packet (including pings) may be as large as 65,535 bytes. Some computer systems were never designed to properly handle a ping packet larger than the maximum packet size because it violates the Internet Protocol documented in RFC 791. Like other large but well-formed packets, a ping of death is fragmented into groups of 8 octets before transmission. However, when the target computer reassembles the malformed packet, a buffer overflow can occur, causing a system crash and potentially allowing the injection of malicious code.