seedbox without external subdomains

[Qbaakr]

Because I searched but didn't find the answer...
Is there an option to use the seedbox completely locally?
By using traefik, you expose your services to outside companies. And currently I want them to be available only via local addresses. I know that I would need to use local DNS etc.
Besides, using Global API doesn't suit me well - it gives too many possibilities after interception.
It's just a question whether it's possible - I know how many people have so many wishes for changes, and is it a lot of work, or is it better to construct something yourself from scratch?
I have wireguard, openvpn to the local network, and that's basically enough for me. And it is known that each sub-domain is a potential possibility of entering the local network - not all services are VPN-enabled, and it is impossible to keep everything behind VPN.
Regards ;)