  The severity of amplification attacks has grown in recent years. Since 2013
there have been at least two attacks which involved over 300Gbps of attack
traffic. This paper offers an analysis of these and many other amplification
attacks. We compare a wide selection of different proposals for detecting and
preventing amplification attacks, as well as proposals for tracing the
attackers. Since source IP spoofing plays an important part in almost all of
the attacks mentioned, a survey on the state of the art in spoofing defenses is
also presented. This work acts as an introduction into amplification attacks
and source IP address spoofing. By combining previous works into a single
comprehensive bibliography, and with our concise discussion, we hope to prevent
redundant work and encourage others to find practical solutions for defending
against future amplification attacks.
