rear differential on 2002 Dodge Ram Van 1500

I just purchased this Dodge ram van because it has low miles for a 2002 vehicle, 66,000 miles and the rear diffential is leaking. I purchased a power train warranty for the vehicle but it dosen't take affect until I reach 1000 miles or 45 days which ever comes first.

Asked by for the 2002 Dodge Ram Van 1500
is it leaking into the brakes or from the rear end hosing??