Steering Leak?

Hey folks, I bought my son a 97 Wrangler Sahara in very good condition but for one thing. Behind the front bumper on the driver's side there appears to be a small steering box that is slowly dripping what looks like normal oil, not power steering fluid. How about an education. What is this? Why is it leaking,duh? And what is involved in fixing this issue.
Thanx again and wow what a great place for info.:loser: