Episode 54?
Was it Cricket Liu Live or Ask Mr. DNS Live? And does it really matter?
Shortly after the first anniversary of the massive DDoS attack on Dyn, Matt and Cricket broadcast a session on DDoS attacks and their relationship to DNS from the National Press Club in Washington, D.C. They talked about how DDoS attacks target DNS infrastructure, how those attacks can exploit name servers, and recapped last year’s attack. And they even examined some mechanisms that will help protect your DNS infrastructure from DDoS attacks:
https://www.infoblox.com/resources/webinars/cricket-liu-virtual-event-2017/