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My home network is protected with a VPN client set up on the router. I have acquired a NAS that I have configured to be a VPN server in order to access it from the outside through L2TP protocol (the NAS is connected to the router). It works perfectly with my router VPN deactivated as I just have to connect to my public ISP IP (port forwarding, etc. all set up correctly)

However how to achieve that with the router VPN up ? Using my public IP does not work anymore and I cannot use the VPN IP, obviously.

Edit : For the sake of clarity, the vpn client on the router is set up with a 3rd party vpn provider. Edit 2 : I have disabled the NAT firewall of my VPN provider with no success

  • So your home router connects to an external VPN service, providing your LAN with VPN connectivity to the VPN provider? And you want to be able to access your NAS (via another, this time L2TP, VPN, bypassing the external VPN provider)? What technology does your VPN provider use, is it, too, L2TP? Your public IP address should still be accessible, through your router, but you may need to change the L2TP port for the port forwarding to, potientially, not interfere with the external VPN, not that it should because the directions are opposite... – Kinnectus Mar 29 at 14:42
  • @Kinnectus Thank you, Exactly. My router is connected to the external vpn provider through OpenVPN, so there shouldn't be port conflicts with L2TP if I'm right ? But if I understand correctly your saying, I could define arbitrary ports for the L2TP connection (on my NAS and on the port forwarding config). Is that so ? – Remys.k Mar 29 at 16:15
  • sorry had to comment again as I cannot edit the previous one : It seems that L2TP ports cannot be changed when defining a new network connection (I'm on Mac) – Remys.k Mar 29 at 16:34

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