I have two networks connected via a router, most are linux based but a few are winblows.

What i want to do is send messages using smbclient -M to certain users on the other network.

eg.
networkone has 192.168.0.* ips
networktwo the same ip addresses.
My main ip out to the net is something like 63.161.104.*

So if I want to send a message to computer frank on networktwo from networkone how would i go about it?

if i am not explaining very well I will try better.

Thanks.