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Using Ubuntu as a Client with WireGuard
Install WireGuard
To connect to your AlgoVPN using WireGuard from Ubuntu, first install WireGuard:
# Ubuntu 16.04 only: Add the WireGuard repository
sudo add-apt-repository ppa:wireguard/wireguard
sudo apt update
# Install the tools:
sudo apt install wireguard openresolv
For installation on other Linux distributions, see the Installation page on the WireGuard site.
Locate the Config File
The Algo-generated config files for WireGuard are named configs/<ip_address>/wireguard/<username>.conf on the system where you ran ./algo. One file was generated for each of the users you added to config.cfg. Each WireGuard client you connect to your AlgoVPN must use a different config file. Choose one of these files and copy it to your Linux client.
Configure WireGuard
Finally, install the config file on your client as /etc/wireguard/wg0.conf and start WireGuard:
# Install the config file to the WireGuard configuration directory on your
# Linux client:
sudo install -o root -g root -m 600 <username>.conf /etc/wireguard/wg0.conf
# Start the WireGuard VPN:
sudo systemctl start wg-quick@wg0
# Check that it started properly:
sudo systemctl status wg-quick@wg0
# Verify the connection to the AlgoVPN:
sudo wg
# See that your client is using the IP address of your AlgoVPN:
curl ipv4.icanhazip.com
# Optionally configure the connection to come up at boot time:
sudo systemctl enable wg-quick@wg0
If your Linux distribution does not use systemd you can bring up WireGuard with sudo wg-quick up wg0.
Using a DNS Search Domain
As of the v1.0.20200510 release of wireguard-tools WireGuard supports setting a DNS search domain. In your wg0.conf file a non-numeric entry on the DNS line will be used as a search domain. For example this:
DNS = 172.27.153.31, fd00::b:991f, mydomain.com
will cause your /etc/resolv.conf to contain:
search mydomain.com
nameserver 172.27.153.31
nameserver fd00::b:991f