VPN Tunnels into multiple locations while protecting local network

My company has around 20 clients that all have Linksys RV082 or RV016 routers in place. Our office has the same router as well (rv082).  We use these routers to connect our clients multiple offices via VPN Tunnels. We support all of the workstations at these locations and I would like to know, if possible, how to connect to all of these locations via our router in the office without giving them access to our internal network. I can create the Tunnels without issue, but then our local LAN is accessible.

Currently we have to VPN into each site using a software VPN client, which is becoming a bit of a pain. I want to be able to be connected to each location at all times in order to remote into their machines, yet I don't want them to be able to see anything on our side of the network.

Is this possible with the current equipment? Any thoughts or suggestions are welcome.
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It's possible but you have to allow at least one PC to be accessed. What I have done is setup an always on LAN to LAN tunnel between my PC and their server and then RDP into their server where I then RDP into what ever PC I need to.
world-netAuthor Commented:
This would work but if I could do it on a broader setup. It would be acceptable to give all of our techs the ability to be connected and for them to see the tech machines, but not the rest of the lan. Any thoughts on how this might be completed?
In the LAN to LAN setup options on a Linksys just specify only the Tech PCs for instance if you give your techs reservations in your DHCP server  for the last 32 (-2) addresses (225-254).
In your Linksys you will have to specify local network and remote network. Say if your IP range is your local network would be
Rember at the customer sites it would be the opposite would be the remote network.

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oops didn't finish. Then you have to make sure your router knows to how to get to the other customer networks if the VPN device is not the router.
world-netAuthor Commented:
Did you get this taken care of or do you need any further assistance?
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