Introduction A few years ago, perhaps 2012 or 2013, my normally OK internet began to slow down. Pretty soon, everything was skipping, downloads took forever. Watching YouTube was painful (and not because of the ads this time). There's always a bit of variation, and this is home-internet, so it was a few days till I investigated. The source of the problems was quite a surprise to me, I was the unwitting co-conspirator, and co-victim, in a 65GB DDoS attack! How did this work? Was I infected by some malware and now part of a bot net that some evil attacker was using? No, but there was a botnet, and it was using me - without even buying me dinner first! The attack was using a method called "DNS Amplification Attack,", making use of my open DNS server. I host my own domain, so I ran a DNS server that was open so that any system on the internet to look up the IP addresses for my websites and other services. We- collectively the whol...