As you move through these recipes, you're moving closer and closer to initiating an enterprise-wide SCEP deployment. Don't be scared, if you take the time to really think through the items in this recipe, you'll be setting yourself up for a pretty painless deployment.
To answer the following items, you will need to have a good understanding of your corporate network as a whole. If you were not a part of the initial SCCM 2012 design, you may need to reach out to your SCCM administrators to verify answers for some of the following items.
Working through the following items will walk you through the process of preparing your environment for SCEP: