we have a customer that is using a zyxel-firewall behind a small router (AVM Fritzbox). Now he wants to use vpn behind the zyxel-firewall.
The problem is, that he uses 192.168.1.x as subnet and also some remote-vpn-user uses this subnet too. So i try to explain the situation:
Remote user 192.168.1.101 -> Remote Router (192.168.1.1) -> Internet -> WAN-IP Office -> Router FRitzbox 192.168.1.1 -> Zyxel -> Draytek VPN Server -> Fileserver (192.168.1.150)
This would be the wanted situation. The remoteuser wants to be able to use the shares of the Fileserver. We are not be able to change the subnet of the remote-net nor the subnet of the office.
What have i to do, to get this "construction" working ? which IP should have the draytek... I am not very familiar with the zyxel-Firewall and only a bit with static routes etc... So please, explain it for dummies :-)
We don´t want to use pptp (because of security). I would prefer ipsec.
Thanks for thinking about it !