Open up port 5600 on your firewall to one of the 5 office computers. You should be able to connect to this computer directly. Then use the "connect through host" option to connect to your other 4 office computers. Details on using the "connect through host" option are described in the help file.
This lets you connected through an intermediate host when there is no direct TCP/IP connection with the computer you want to administer, but an intermediate computer (or host) does have a direct TCP/IP connection to both your target computer and to your computer. Radmin server must be runing on such an intermediate (host) computer for this to work.
my network is:
The intermediate computer from PCMyHome and PC2 is a router.
I know ip address of router.
How can i connect PCMyHome with a only Computer of NetworkOf5PC's, precisely with PC2 ?