VPN with Tinc

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FIXME: What's a VPN, what's Tinc

Installation on Server(s) and Client(s)

FreeBSD

  • Install tinc 1.1 pre from ports
sudo pkg install tinc-devel               # binary
sudo portmaster -iB security/tinc-devel   # source

GNU/Linux (Debian based)

  • Install tinc 1.1 pre from source
sudo apt install -y build-essential libncurses5-dev libreadline6-dev libzlcore-dev zlib1g-dev liblzo2-dev libssl-dev

Compile Tinc 1.1pre :

cd /usr/src/
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 the configuration dir should be in:

/usr/local/etc/tinc/

And tinc is installed in

/usr/local/sbin/tinc

Make a directory for pidfile and socket

sudo mkdir -p /usr/local/var/run/

Set up systemd serivces

sudo vim /lib/systemd/system/tinc.service
[Unit]
Description=Tinc VPN
After=network.target

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/bin/true
ExecReload=/bin/true
WorkingDirectory=/usr/local/etc/tinc

[Install]
WantedBy=multi-user.target

and

sudo vim /lib/systemd/system/tinc@.service
[Unit]
Description=Tinc net %i
PartOf=tinc.service
ReloadPropagatedFrom=tinc.service

[Service]
Type=simple
WorkingDirectory=/usr/local/etc/tinc/%i
ExecStart=/usr/local/sbin/tincd -n %i -D
ExecReload=/usr/local/sbin/tincd -n %i -kHUP
KillMode=mixed
TimeoutStopSec=5
Restart=always
RestartSec=60

[Install]
WantedBy=multi-user.target


Enable them on boot:

systemctl enable tinc@lurknet


Start / stop at will:

sudo systemctl start tinc@lurknet
sudo systemctl stop tinc@lurknet


Configure Server

sudo tinc -n lurknet init servername
sudo tincd -n lurknet
sudo tinc -n lurknet add subnet 10.0.1.1
sudo tinc -n lurknet add address=public.IP.address

Set up interface scripts

sudo vim  /usr/local/etc/tinc/lurknet/tinc-up
#!/bin/bash
ip addr add 10.0.1.1/24 dev $INTERFACE
ip link set $INTERFACE up
sudo vim /usr/local/etc/tinc/VPNNAME/tinc-down 
#!/bin/bash
ip route del 10.0.1.1/24 dev $INTERFACE
ifconfig $INTERFACE down

Make them executable

cd /usr/local/etc/tinc/lurknet/ && chmod +x tinc-*

Configure client

For the client (given gnu/linux) compile the software as instructed above. Also make the systemD scripts and set up the interface scripts (using a different IP-address).

On the server then generate an invitation url:

tinc -n lurknet invite $CLIENTHOSTNAME

This will give you an invite URL so you can join the network on the client:

tinc join $INVITEURL
tinc -n lurknet add subnet 10.0.1.3


Further reading

The above is an amalgam from and may provide further details:

https://zingmars.info/2018/07/14/Tinc-1.1-setup-instructions/

https://www.tinc-vpn.org/documentation-1.1/

http://pzwiki.wdka.nl/mediadesign/Tinc

MacOs

FIXME

Windows

Setup Server(s)

FreeBSD

  • Initialize new VPN
sudo tinc -n beernet init server
  • Configure the host's own interface
sudo tinc -n beernet add subnet 10.10.10.1
  • Configure the host's public IP, or domain if you have one for the host
sudo tinc -n beernet add address=super.domain.xxx  # if you have a domain ...
sudo tinc -n beernet add address=1.1.1.1           # or if you just have a public IP
  • edit /usr/local/etc/tinc/beernet/tinc-up, so that your network interface is brought up correctly, for instance with:
ifconfig $INTERFACE 10.10.10.1 netmask 255.255.255.0  # leave $INTERFACE as it is
  • test if your VPN works nicely for the time being by running it directly in a shell with extra verbose options:
tincd -n beernet -D -d3

Setup Client

FreeBSD

GNU/Linux

MacOs

Windows