Using PPTP (RAS) for remote access only

I have Mikrotik boards that are installed in different networks all over the world.
-The WAN interface is wired ethernet and uses DHCP to get its address.
-The LAN interface is the default 192.168.88.x + DHCP.

I need remote access to the routers, and can’t get in via the WAN IP because it’s unknown and behind firewalls. So I want the routers to initiate a PPTP VPN connection to my server (Windows Server). But I don’t want all the WAN traffic to go onto the VPN connection. It’s only used for remote admin of the router.

  1. How can I configure the router to make a VPN connection to the server but NOT route any traffic through it?
  2. On the server, can I use DHCP to assign addresses to the routers? What happens if the VPN’s subnet is the same as the WAN’s subnet? This is out of my control. Will conflicts happen?
  3. Is the routeros PPTP client robust and reliable? Will it reconnect if it fails?
  1. It will create its own interface and that interface does not have to have anything to do with anything else. You don’t have to send the Internet traffic through the tunnel and it won’t do that if you uncheck “Add Default Route.”
  2. Yes, it would create conflicts.
  3. It is robust and reliable. Yes, it will try to reconnect and it pretty quick about it too.