Tailscale

I hate VPN software with all my being, especially when I have to connect to multiple computers in different VPN-backed networks at the same time. Universities tend to use VPNs as a way to hide their clusters from the open internet. Tailscale is the software I use to access my lab machines from anywhere as if they were in the same network as me. I also use tailscale to keep my NAS and IoT devices available to me wherever I am, but not directly exposed to the internet. And because tailscale plays well with itself (the same cannot be said by OpenVPN software), I can use all machines at the same time, with them not accessing each other. The main grip I have with tailscale is that if I am in the same local network, using the machine1.mynet.ts.net DNS instead of the local IP makes file transfers super-slow. Headscale is the opensource server-side of tailscale, if you want to keep everything in-house. Or you can use the new kid in the block, Nebula, developed by Slack.