Towing all wheel drive Subaru behind a driving camper
AWD automatic 4 and 5 speed vehicles should not be towed with any wheels on the ground. The vehicle can only be towed on a trailer with all 4 wheels off the ground and the transmission in park. I hope this answers your question.
This includes Subaru automatic transmissions, I see that you posted this question twice, it has to be put on a raised dolly.
See this, it may affect manual transmissions as well, call the dealership. Don't take chances with this. http://www.subaruforester.org/vbulletin/f62/2014-forester-xt- cannot-towed-222634/