How to use VPN

[eugeneg]

I am a recent convert to TeamViewer so have never seen this working and maybe have therefore done something wrong.  I seem to have made VPN connections to different Windows PCs but each time I can not progress to 'Share files via explorer' or see shared printers. 

I can PING myself only from the initiating side - the Test ping button causes timeouts.  The host can PING themselves as well as me.  But In the Network folder there are no other machines.  If I open a browser and type the IP address in I get the message:

"This site is running TeamViewer.
Free Port 80 for other applications in advanced settings. "

Do I need to do something differently ?

[eugeneg]

[egg on face]
I disabled the host's firewall and it worked fine.