Hi David,
Thank you for your message.
At times the host stops running and i cannot connect with the remote computer.
When you say that the Host stops running do you mean that the Host service freezes/fails on the remote computer? Or just that the Host shows offline in your address book in Viewer? The latter can be caused by network connectivity issues , not necessarily by the Host itself being unresponsive.
If it's the former then we should find the reason why the Host service fails because this is abnormal behavior. I.e. we should fix the root cause.