ICMP Traceback Messages
Steven M. Bellovin, M. Leech, Tom Taylor · 2003
It is often useful to learn the path that packets take through the Internet, especially when dealing with certain denial-of-service attacks. We propose a new ICMP message, emitted randomly by routers along the path and sent randomly to the destination (to provide useful information to the attacked party) or to the origin (to provide information to decipher reflector attacks).