vnc router issue

[hokage hokage]

Hello,

Am a new convert to this unix lark! just recompiled me first kernel
and installed x.orgs latest version, like two days ago. So as u can
see i am *total freshie*. Have come across a problem.

I work for a company that carries out support.

We are supporting a company that has around ten client computers and 1
server, all on internal 192.168.*.* addresses.
These computers are only accessible through a router. There static WAN
address provided by there isp forwards all traffic to the router.

Whenever there is a problem on a specific client, i would like that
client to initiate a program that allowed me (i am on a completely
different network) to *access that particular* client.

*i really do not want to use port forwarding because we want 2 handle
clients that have 100 or more terminals.* Specifying 100 ports on a
router fills me with horror.


I'm sure there is a standard tried and tested way of doing this, but i
cant find it. Even using the search func provided by the forum. *Any*
help on would be much appreciated.