Well, what you're looking at there is the steering rack. I would start by looking at things directly above there, like the p/s pump and reservoir. If everything is greasy and gunked up so that you really can't tell anything, get some Simple Green or couple cans of engine degreaser and clean everything up, then just watch for a few days and see where fresh fluid is coming from.
2001 ***** Slayer Red GT convertible; all of the usual bolt-ons.
1967 Notch; 200 I-6, C4 auto