Shulchan Aruch Orach Chaim 671:8 rules that if one has a courtyard with two entrances on different sides, one lights Chanukah lights at both entrances, to prevent passersby from suspecting that the owner has not performed the mitzvah.
However, Rema writes that:
בזמן הזה שכולם מדליקין בפנים ממש ואין היכר לבני רשות הרבים כלל אפי' יש לחצר או לבית הרבה פתחים לארבע רוחות אין מדליקין אלא פעם אחת בפנים כנ"ל וכן המנהג פשוט:
Nowadays, when everyone lights properly indoors, and those in the street cannot notice at all, even if the courtyard or house has many entrances to all four directions, one lights only once inside (as mentioned above). Such is the widespread custom.
Is this ruling of Rema applicable nowadays in Israel, where, it seems to me, many do have the custom to light outside by their doorways?
At first glance, it would appear that Rema's ruling would not be applicable. However, there a couple of points which could mean that it still applies:
Many people in Israel, while still ensuring that their lights are visible from the street, will light at a window, rather than outside a door. Maybe that fact is enough to remove the suspicious appearance of a door without lights?
Even if the vast majority of people now light by the door in Israel, the fact is that for hundreds of years people lit inside. Maybe this means that anyone seeing a door without lights would not necessarily suspect the inhabitants of not performing the mitzvah at all, but would instead presume that they had lit indoors?