Hi, as a Fly newbie I tried a lot of tutorials how to configure private network. My case is rather simple, I want to have an app only to development purposes. So my dream is to have an access only via VPN like via https://my-app.fly.dev:4200, not visible from public. I have generated configuration for WireGuard. I don’t want to share any details, to don’t suggest any wrong thinking.
The question is what should I configure, or how to to this. I’d really appreciate help.
Thank you in advance
If you have the wireguard tunnel setup (and connected) you can access your app name using http://APP_NAME.internal:APP_PORT.
To block public access, dont define any service:
No
servicessection: The application has no mappings to the external internet - typically apps like databases that talk over 6PN private networking to other apps.
@crossworth OMG everything works like out of the box. I didn’t know that I should use “internal” suffix. Now it works like a dream. Thank you so much for your help. App already blocked for public traffic and works for my machine via internal. 
unfortunately, I had something cached and actually does not work.
I tried to perform:
dig +short aaaa my-app.internal @fdaa::3
but I received
;; UDP setup with fdaa::3#53(fdaa::3) for my-app.internal failed: host unreachable.
Your DNS is not fdaa::3, its organization dependent
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