First of all A big thank you to Russell for the FSHost programs 
I have been using FSHost for about 5 years or more now with next to no problems. FSHost is user friendly and quite stable.
What I have notice is how internet protocol seem to have changed. Port numbers like 80-84 23450 - 23459 are blocked by the ISP providers and good luck getting them to open these ports.
I'm running three instances of FSHost and a TeamSpeak server on my win7 home computer, that I have designated as my server computer. I have forwarded all the ports through the Firewall and the router needed by FSHost. For the most part everyone connects just fine, so I don't know if some of the connection issues are on my side, the ISP providers or the clients side.
Any thoughts or suggestions would be appreciated.
Thank you for your time and help,
Kenny Fox
kenny@fsvintageair.com