Preheat oven to 350 degrees F.
In a medium saucepan, simmer together peach nectar, ginger, lemon juice, and garlic cloves. Simmer for 20 minutes.
Strain out ginger and garlic.
Prepare ham for glaze. Rub Dijon mustard and then brown sugar on the ham.
Pour glaze on bottom of pan and throw in sliced peaches for additional peach flavor.
Place ham in oven for 1 1/2 hours. Every 10 to 20 minutes glaze ham with the glaze from bottom of pan to keep moist.