Chances are, you are on an internal network.
Usually your computers will be: 192.168.1.x

You can figure out the ports for each computer, at the MS-Dos prompt.
I believe the command is ipcfg.
You can also (from a browser window) type 192.168.1.1, which opens up the router configuration.
Unless you changed it, use the name admin, with no password.
That will show the ip address of each computer on your network.

Anyway, on the "main" keyclone, enter the ip address of the slave or slaves.
Not sure on the ports; I've never used KC across multiple computers.