# Using Ubuntu as a Client with WireGuard ## Install WireGuard To connect to your AlgoVPN using [WireGuard](https://www.wireguard.com) from Ubuntu, make sure your system is up-to-date then install WireGuard: ```shell # Update your system: sudo apt update && sudo apt upgrade # If the file /var/run/reboot-required exists then reboot: [ -e /var/run/reboot-required ] && sudo reboot # Install WireGuard: sudo apt install wireguard openresolv ``` For installation on other Linux distributions, see the [Installation](https://www.wireguard.com/install/) page on the WireGuard site. ## Locate the Config File The Algo-generated config files for WireGuard are named `configs//wireguard/.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: ```shell # Install the config file to the WireGuard configuration directory on your # Linux client: sudo install -o root -g root -m 600 .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 ```