IT/Software/Networking/ZeroTier

Basics

You need to get an account at ZeroTier

You can connect up to 100 computers for free.

After that get another and you get 200.

Install

 curl -s https://install.zerotier.com | sudo bash   

There is a more complicated(more secure?) script on their download page but I do not get it to work.

Errors 1

• It will not install if your package manager has issues.

sudo apt --fix-broken install

sudo dpkg --configure -a

• Now try the install again.

Errors 2

• You may get 401 errors or "no port. . . " errors
• you need to purge and reinstall.

sudo apt purge zerotier-one

• You may then still need to remove var/lib/zerotier-one
• If you have a snap installed they will not work together sudo snap remove zerotier-one

Join your network

The scary thing here is you don't need any kind of a password

Once you join you will still need the address of others in the network to access them.
sudo zerotier-cli join XXXXXXXXXXXXXX

No I will not give you my network id!

Summary

That is all there is. In two commands you are connected.