Using router stamping to identify thDenial of Service and Distributed Denial of Service attacks
have cost millions of dollars to online companies. Unfortunately,
these attacks are particularly dicult to stop since
hackers are able to hide their IP address by IP spoong,
so that it is often impossible to identify their location. Our
proposal, Router Stamping, would help to identify the source
of Denial of Service attacks, provided that a signicant percentage
of packets are sent from one subnet. In accomplishing
this, Router Stamping imposes only a small increase in
the size of the packet header. In addition, it is easy to implement
and maintain, and it can function in the presence
of some noncompliant or malicious routers.e source of IP packets