Hilchos Chanukkah / Kindling the lights (b) – 9

1. Chanukkah lamps that are lit at the entrance to one’s house, should be placed on the left side of the door, opposite the mezuzah, so that the person going through the door is surrounded by mitzvos. It is preferable to place the menorah-candelabrum within the open space of the door – i.e., between the doorposts; however, if that is not possible, they may be placed up to a tefach (handbreadth) adjacent to the entrance. (Kitzur Shulchan Aruch, 139)

2. Someone whose door does not open to the public domain should kindle the lights in a window that faces the street, so that the passerby can easily view the lights. (ibid.)