Connect through host option
This option enables you to connect through a host when there is no direct TCP/IP connection with the computer you want to administer, but an intermediate host computer has a direct TCP/IP connection to the target computer (gateways etc.). The Radmin Server must be running on both the intermediate host computer and the target computer.
Example: You have a computer on your local network that has a direct connection with the Internet. If you install the Radmin Server on that computer, you can connect to the Internet from the other computers on your LAN by using that computer as an intermediate host.