I'm trying to set up a VPN that allows me to connect to my home network while I'm away. My router at home connects to a second shared router that provides internet access for the building, and I can't access that shared router to set up port forwarding. I've set up an OpenVPN server on an old laptop in my personal network and signed up for a Dynu account to create a hostname for my VPN. But I'm wondering if I can use DDNS without being able to configure port forwarding on the shared router. Am I stuck? By the way, my home router is a basic repeater with OpenWrt installed, and all my devices use Linux Mint.
2 Answers
You could look into using UPnP, which allows devices on your network to set up port forwarding automatically. If the shared router has UPnP enabled, this might be your way to establish a connection without needing admin access.
Unfortunately, without access to the shared router for port forwarding, your DDNS setup won't work. You typically need to configure port forwarding to make your VPN accessible remotely. However, check if the shared router supports IPv6; it might offer a solution.

Thanks for the heads-up about IPv6! I’ll definitely check if that’s an option.