Transport Layer Security (TLS, formerly SSL) is a vital part of a serverás network security--even on z/VM. But itás also a confusing and at times infuriating subject. This presentation will take a step back from the jargon to explain: what it is, when you use it, why it matters to you, and what youáre really doing when you set this up on the z/VM TCP/IP stack. The goal of this presentation is to provide enough wisdom that, the next time you read the IBM manual on this topic, it actually makes sense. Donát be afraid to ask questions as we go!