Hi @mlsmaycon
what is your opinion on this topic. Is it worth it for extra security to invest more time, or would you just install Netbird on Proxmox directly and bring it online?
I tried so far:
-using several tools and app internally and externally on Hetzner Ubuntu VPS to create a jump box style setup (stopped at port forwarding since I do want to avoid this)
-Wireguard wg0 or tun0 creation to VLAN B Ubuntu and the using squid or similar to forward explicit traffic to proxmox in VLAN A (stopped there as well because of complicated setup and hard to do for average people like me)
Your opinion would mean a lot to me, since I am stuck, but willing to wait in case you see a chance to solve this - as a security feature for a lot of homelab people that did not even know they are exposing a lot running proxmox, docker, vms, homeassistant etc - without thinking about it 
there more you know, and I know nothing and it is crazy what you can see going on - going into more and more detail
I just wanted to give it a try because Netbird seems to be the best option I found so far. very close to what I would consider a protected, non exposed Proxmox (VMs can always be reinstalled with a snapshot, if something went wrong)
Thanks again. Milo