Executive summary \n Recent attacks against Akamai customers have leveraged a networking protocol known as protocol 33, or Datagram Congestion Control Protocol (DCCP).  These attacks prompted the Akamai SIRT team to look into the protocol further and offer insights and mitigation strategies for network defenders. \n DCCP: TL;DR \n The intended DCCP use case is for long-lived or large data flows that would typically be handled via User Datagram Protocol (UDP).  In most UDP implementations, the network congestion control mechanisms implemented by DCCP aren't handled at all.…