How to set up WireGuard on OpenWrt from CMD (on Windows)

In this tutorial we will show you how to set up WireGuard^® VPN on OpenWrt from CMD on Windows but first let’s see what are our requirements and recommendations.

Installing packages

1. Connect to the LuCI administration interface through the browser of your choice. Usually its address is 192.168.1.1.

   

2. Go to System > Software from the menu bar.

   

3. Type luci-proto-wireguard in the Download and install package field and click on OK to install WireGuard and all the necessary dependencies.

   

   Click Install to approve the luci-proto-wireguard package install.

   

4. Type luci-app-wireguard in the Download and install package field to manage WireGuard using LuCI.

   

   Click Install to approve the luci-app-wireguard package install.

   

Installing the SSH Client

If you use a Windows PC you need to install the Open SSH Client first.

To enable the feature in Windows 10, go to Manage optional features from the Start Menu and click on Add a feature.

Scroll down to the bottom, select OpenSSH Client and click on Install.

Wait for a few seconds, open the Command Prompt as “administrator” and type ssh to make sure it is installed.

Choose the VPN server

Sign in to your account on our website and go to Settings -> WireGuard Configs.

Select the VPN server you want to connect to.

In the field below, you will get the Wireguard configuration for the selected server. Copy the content of the field, you will need it at step 5.

Important! Keep the PrivateKey a closely guarded secret, do not share it with anyone, and do not post it on the Internet.

Creating the keys

1. Connect to the router by typing in a console ssh [email protected]

   Type yes to continue connecting and type the password.

   

2. Create the client’s private key file by running:

   vi wgclient.key

   Press i inside the editor to start editing it.

   Copy the PrivateKey (for example aE56kmTB9rUvi4JaIK73oSDGJfnQKZY5sd5jhKLd632=) and paste it into the file.

   Press the ESC button, write :wq then press Enter in order to write and quit the file.

3. Create the server’s public key file by running:

   vi wgserver.pub

   Press i inside the editor to start editing it.

   Copy the PublicKey (for example YZt2XhiI+qRFaRpCHW67+lEKHPQN+RroRkUBX+CBI/v=) and paste it into the file.

   Press the ESC button, write :wq then press Enter in order to write and quit the file.

Installing packages and specifying the VPN client configuration parameters

To install the packages run:

opkg update
opkg install wireguard

To configure the parameters run:

WG_IF=”vpn”
WG_SERV=”Endpoint IP(without port)”
WG_PORT=”60100″
WG_ADDR=”Address of the Interface”

Key Management

To exchange the keys between the server and the client run:

WG_KEY=”$(cat wgclient.key)”
WG_PUB=”$(cat wgserver.pub)”

Firewall setup

Consider the VPN network as public and assign VPN interface to WAN zone to minimize firewall setup.

To configure the firewall run:

uci rename firewall.@zone[0]=”lan”
uci rename firewall.@zone[1]=”wan”
uci del_list firewall.wan.network=”${WG_IF}”
uci add_list firewall.wan.network=”${WG_IF}”
uci commit firewall
/etc/init.d/firewall restart

Set up VPN interface and peers

To configure the network run:

uci -q delete network.${WG_IF}
uci set network.${WG_IF}=”interface”
uci set network.${WG_IF}.proto=”wireguard”
uci set network.${WG_IF}.private_key=”${WG_KEY}”
uci add_list network.${WG_IF}.addresses=”${WG_ADDR}”

To add VPN peers run:

uci -q delete network.wgserver
uci set network.wgserver=”wireguard_${WG_IF}”
uci set network.wgserver.public_key=”${WG_PUB}”
uci set network.wgserver.endpoint_host=”${WG_SERV}”
uci set network.wgserver.endpoint_port=”${WG_PORT}”
uci set network.wgserver.route_allowed_ips=”1″
uci add_list network.wgserver.allowed_ips=”0.0.0.0/0″
uci commit network
/etc/init.d/network restart

Once the network will restart you will be connected to the VPN server.

Monitoring connection status

Run wg show command to monitor any WireGuard connection.

To disconnect from VPN you can run these commands:

ifdown wg0
uci set network.wg0.auto=”0″
uci commit network
/etc/init.d/network restart