ZeroTier Bridge to acces network and use as VPN

[xxgmxxjirka]

Hi, is there any easy tutorial on how to set up ZeroTier Bridge, to either use as VPN or to access my home network from my phone or another computer? I have tried it, but I am a bit confused because there is no step-by-step tutorial and other tutorials doesn’t really work for me.
I am trying to set it up for weeks with all tutorials I could find, like this:

pglez82/bridged-zerotier

This one looks the best of all, but I am really confused about what this means

mv bridge-start /usr/local/bin
mv make-tap /usr/local/bin
mv startvpn.sh /usr/local/bin

should I put the scripts inside the /usr/local/bin or do it with “vi bridge-start” I dont really know, because there is no such script by default. I have mage like 100+ VMs with different tutorials, non of them works. I can ping the devices, but thats all I have done.

Is there easy tutorial to follow, that everyone is able to do or should I just leave this ideta behind ?

[xxgmxxjirka]

Another one is this (better one)
ZT VPN

With this one, everything was working until I get to the " From DO tutorial"

#!/bin/bash
# A very basic IPtables / Netfilter script /etc/firewall/enable.sh

PATH='/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'

#service networking restart > /dev/null 2>&1

touch /root/RUNNING_FIREWALL_IPTABLES_NOW

# Flush the tables to apply changes
/sbin/iptables -F

# Default policy to drop 'everything' but our output to internet
/sbin/iptables -P FORWARD ACCEPT
/sbin/iptables -P INPUT   ACCEPT
/sbin/iptables -P OUTPUT  ACCEPT

# Allow established connections (the responses to our outgoing traffic)
/sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

# Allow local programs that use loopback (Unix sockets)
/sbin/iptables -A INPUT -s 127.0.0.0/8 -d 127.0.0.0/8 -i lo -j ACCEPT

/sbin/iptables -t nat -A POSTROUTING -o enp2s0 -j MASQUERADE
/sbin/iptables -A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
/sbin/iptables -A FORWARD -i ztklhsm3zp -o enp2s0 -j ACCEPT


exit 0

I am not really sure what this script means. So I read the DO tutorial instead:
DO Tutorial
In the step 5

sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

sudo iptables -A FORWARD -i zt0 -o eth0 -j ACCEPT

I probably need to change the eth0 to the name of the “ethernet” of the device. I have it running on VirtualBox and it seems like the eth0 for me is enp0s3. I have changed the command to this.

sudo iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE

sudo iptables -A FORWARD -i zt21r4amuq -o enp0s3 -j ACCEPT

Is it correct ? if I write ifconfig I get somehing like this:

ubuntu@ubuntu:~$ ifconfig
enp0s3    Link encap:Ethernet  HWaddr xxx
          inet addr:192.168.0.167  Bcast:192.168.0.255  Mask:255.255.255.0
.
.
.
zt2lr4amuq Link encap:Ethernet  HWaddr xxx
          inet addr:192.168.0.167  Bcast:192.168.0.255  Mask:255.255.255.0
.
.
.   

I can ping the server, server can ping my phone, but if I anable default route, the phone cant acces anything.