ZBrushCentral

Sculpting going to other side of mesh

I’m not really familiar with ZBrush, so this is probably a noob question, but… When I sculpt on a model’s ear or hand, the sculpt goes to the back side of the mesh that I’m working on. I’ve tried to fix this and Googled some, but I can’t seem to get it to stop doing it. Where is a setting for how far back the brush will affect the mesh? I don’t see ignore backface or brush depth.