both iphone and computer are install teamviewer ...!
iphone app store(free)../ PC teamviewer web page (free).
open pc teamviewer pgm it will show a ID(number) and password.
goto your iphone teamviewer apps ,input pc number and password ...then remote start...!
remark:...even both computer are behind router (fake ip) it's also work...but not suggest to surf internet banking!