Our company just fired the I.T guy that handled this request, and I have been tasked to enable or create an access rule which will allow one of our contracted Air conditioning guys so that he will be using something call LonWork interface tool to tunneling into our firewall to access the Echelon AC system internet Server that is connected to our network.
Our goal is to allow him to connect from outside to our network which will ultimate reach the destination device. I've created access rules on the firewall to permit traffic from the outside (see pic 1)
just about to scratching my hair off but unable to figure it out. any help would greatly appreciated.