You also need to open the ports in windows firewall, sometimes windows prompts you the first time you open the program but i find with my files i still had to go in because it missed some. You can also just set the programs to be an exception i think that should have the same affect.
---------- Post added at 07:57 PM ---------- Previous post was at 07:56 PM ----------
Also after allowing the ports and programs through your firewall and router you must also reboot the router and your pc for it to take affect ( in some cases )