Tinc

tinc is a Virtual Private Network (VPN) daemon that uses tunnelling and encryption to create a secure private network between hosts on the Internet.

And is used in XPUB to create the HUB VPN - aelectronic learning enviroment, server playground, web publishing platform, consisting of local machines (mainly raspberry pis) that sit behind firewalls, but through tinc are accessible from outside the firewall.

Install Tinc Client

On RaspberryPi / machine that will be joining HUB

Install dependencies

sudo apt install build-essential automake libssl-dev liblzo2-dev libbz2-dev zlib1g-dev libncurses5-dev libreadline-dev 

Compile Tinc 1.1pre :

cd ~

wget https://www.tinc-vpn.org/packages/tinc-1.1pre17.tar.gz

tar xvf tinc-1.1pre17.tar.gz

cd tinc-1.1pre17

./configure

make

 sudo make install

Once installed create configuration dir:

sudo mkdir -p /usr/local/etc/tinc/

And tinc is installed in

/usr/local/sbin/tinc

Next steps

Follow XPUB_HUB_New_Nodes.