Bart Simons

Bart Simons


Thoughts, stories and ideas.

Bart Simons
Author

Share


Tags


.net .net core Apache C# CentOS LAMP NET Framework Pretty URLs Windows Server WireGuard WireGuard.io access log add analysis android api at the same time authentication authorization automate automation azure azurerm backup bash basics batch bootstrap build capture cheat sheet chromium chroot class cli click to close code snippet command line commands compile compiling compression containers control controller controlling convert cpu usage create credentials csv csvparser curl data dd deployment desktop detect devices disable diskpart dism distributed diy docker dom changes dotnet core drivers ease of access encryption example export file transfer files fix folders generalize getting started ghost ghost.org gui guide gunicorn gzip html html tables icewarp igd imagex import inotify install installation interactive ios iphone itunes java javascript jquery json kiosk kotlin linux live load data loading screen lock screen loopback audio lxc lxd lxml macos manage manually message messages minio mirrored mod_rewrite monitor monitoring mutationobserver mysql nexmo nginx no oobe node node.js nodejs not installing notification notifications object storage on desktop one command openssl owncloud parallels parallels tools parse perfect philips hue play port forwarding portainer.io powershell processing ps-spotify python quick raspberry pi record rip ripping rsync rtmp save save data sbapplication scraping script scripting scriptingbridge scripts security send server service sharedpreferences sms songs sonos spotify spotify api spotlight ssh stack streaming streamlink studio sudo swarm swift sync sysprep system audio systemd tables terminal tracking tutorial twilio ubiquiti ubuntu ubuntu 18.04 ui code unifi unlock unsplash source upnp uptime usb tethering wallpapers wasapi website websites webview windows windows 10 without itunes without oobe workaround xaml

WireGuard.io Getting Started Guide/Tutorial

In todays networking world, virtual private networks are unmissable. With IT needs growing exponentially in the current modern era, it is essential to make the right choices on what VPN software you are going to use. While IPSec tunnels are commonly deployed and proven to deliver good performance while being stable at the same time, are there any other alternatives?

Yes there are. Here are some VPN solutions I have deployed in the past:

Recently - on a long journey on Google - I came across WireGuard. They claim to have the networking code of their VPN software running in kernel-space for optimal performance, so that seems all good. I decided to dig deeper into WireGuard, so I could write a guide/tutorial on the getting started and configuration process.

My test environment

My test environment consists over two Linux servers in the cloud, they are directly connected to each other over a private network:

For benchmarking networking speeds I used iperf, and this is the traffic speed test result I got over this private network:

iperf raw network speeds

Installing WireGuard

This step is pretty straight forward, just copy and paste this code into your terminal:

add-apt-repository -y ppa:wireguard/wireguard
apt update
apt install -y wireguard-dkms wireguard-tools

If you don't use Ubuntu on your servers, check out this page on the WireGuard website to find out how to install it on your Linux distribution of preference.

Initialisation of WireGuard's virtual interfaces

Configuring a simple peer-to-peer tunnel on WireGuard is not that complicated.

First of all, let's create the wg0 interface on both servers - this will be the virtual interface for your virtual private network between both servers:

ip link add dev wg0 type wireguard

Your virtual network also needs an IP address for each node so that machines can communicate between each other over IP:

# For server-01:
ip address add dev wg0 192.168.2.1/24

# For server-02:
ip address add dev wg0 192.168.2.2/24 

Generating a configuration for each node

WireGuard uses a key-based VPN solution for communication between nodes. This system insists of a private key and a public key for each node. You can generate these keys on each node with the following command:

# For server-01:
wg genkey | tee privatekey01 | wg pubkey > publickey01

# For server-02
wg genkey | tee privatekey02 | wg pubkey > publickey02

Create a configuration file named wireguard.conf and store it somewhere safe with the right Linux permissions applied on this file (chown/chmod). Here's what you need to put in this configuration file:

# On server-01:

[Interface]
ListenPort = 4820
PrivateKey = privatekey01's content goes here

[Peer]
Endpoint = ip:port of endpoint (10.129.30.154:4820)
PublicKey = publickey02's content goes here
AllowedIPs = 0.0.0.0/0
# On server-02:

[Interface]
ListenPort = 4820
PrivateKey = privatekey02's content goes here

[Peer]
Endpoint = ip:prt of endpoint (10.129.29.151:4820)
PublicKey = publickey01's content goes here
AllowedIPs = 0.0.0.0/0

Link the configuration to the interface on all nodes:

wg setconf wg0 wireguard.conf

Bring the interface up on all nodes:

ip link set up dev wg0

You are now connected, you can test connectivity by sending ICMP echo packets:

WireGuard ICMP connectivity test

Benchmarking performance

Run this command on the first node (server-01 in my case):

iperf -s

Run this command on the second node (server-02 in my case):

iperf -c 192.168.2.1

These are the results I got over the tunnel:

Pretty good results for just a dual-core server. I'm sure that there are possibilities/tweaks to make WireGuard perform even better, we'll see...

Bart Simons
Author

Bart Simons

View Comments