I have just discovered #narrowlink. It looks interesting especially with P2P mode introduced in the v0.2 version. For accessing services behind a nat it looks to have better bandwidth requirements as compared to traditional VPNs. https://narrowlink.com/blog/Hello-World
Meet Narrowlink - Your New Remote Access Best Friend | Narrowlink
Narrowlink enables secure remote access across restricted networks. Learn how its architecture works and the unique benefits it unlocks.narrowlink.com