- Entire site-to-site tunneling/routing. I didn't have to do anything for my parents I just dropped a subnet router at their place.
- Access my services/servers at home from anywhere in the world. Friendly mobile apps as well that allow the same.
- In cloud environments (for work and fun), don't even bother provisioning public IPs and having to deal with those firewall rules, just use Tailscale
- https://tailscale.com/blog/tailscale-auth-nginx/ describes how you can integrate nginx proxying with Tailscale auth to both leverage SSO and the authenticated endpoint
- I have a bootmod3 WiFi adapter plugged into my street/track car with a combo 5G/Linux unit in the car connected to my Tailscale that streams continuous telemetry about the car whenever its turned on. I could in theory re-flash the ECU via this.
- Using https://tailscale.com/kb/ondemand-access/ alongside node/subnet grouping to create a very neat first step towards auditing access to sensitive production services/environments.
- I use server-based dev environments to keep my portable laptop as clean as possible with no source code on it. VS Code remote + Coder server are fantastic over Tailscale.
+ others. Tailscale I think solves the problem of node-to-node-to-subnet connectivity at a convenient and flexible layer.