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--- notes:setup-wireguard-vpn-on-debian9 [2018/09/06 11:51] – server conf admin
+++ notes:setup-wireguard-vpn-on-debian9 [2019/02/02 21:47] – [Client Setup] admin
@@ Line 2: / Line 2: @@
 -- //Tested with **Debian 9** (server side) and **Ubuntu 18.04** (client side) on **September 2018**// --
 ==== Server Setup =====
-=== Install WireGuard ===
+=== Install WireGuard on the Server ===
 Install WireGuard from Debian packages
@@ Line 41: / Line 40: @@
 === Configure the Server ===
-Now, create a file for the wireguard interface (''wg0'' in our example) with
+Check the name of the network interface with
-  sudo vim /etc/wireguard/wg0.conf
+  ip l
-and add the following content (replace the sample keys with your actually generated keys):
+: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1
+      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
+: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
+      link/ether 00:0c:29:5a:8c:02 brd ff:ff:ff:ff:ff:ff
+In our case the public network interface is ens32. Note down the public IP address of the server associated to the interface. In our example will be 1.2.3.4 (no, I'm not from APNIC) - you can check yours with
+  ip a show dev ens32
+Now, create a file for the wireguard interface (''wg0s'' in our example) with
+  sudo vim /etc/wireguard/wg0s.conf
+and add the following content (replace the sample keys with your actually generated keys and ens32 with your server's public interface):
   [Interface]
   Address = 172.16.16.1/24
@@ Line 55: / Line 66: @@
   AllowedIPs = 172.16.16.2/32
-You can also change the ListenPort from 5544 to a different, unused port (and open the corresponding port on the firewall).
+You can also change the ListenPort from 5544 to a different, unused port (and open the corresponding port on the server's firewall).
+=== Start the server ===
+Start Wireguard on the server with
+  sudo wg-quick up wg0s
+and check if the VPN tunnel is up and running with
+  wg show
+If needed, you can kill the tunnel with
+  sudo wg-quick down wg0s
+==== Client Setup =====
+=== Install WireGuard on the Client ===
+Install wireguard on your Ubuntu client with
+  sudo add-apt-repository ppa:wireguard/wireguard
+  sudo apt-get update
+  sudo apt-get install wireguard
+=== Configure the Client ===
+Now, create a file for the wireguard interface (''wg0c'' in our example) on your Ubuntu client
+  sudo vim /etc/wireguard/wg0c.conf
+and add the following content (remember replace the IP address of the Endpoint with server public address and the keys).
+  [Interface]
+  Address = 172.16.16.2/24
+  SaveConfig = true
+  ListenPort = 47824
+  FwMark = 0x1234
+  PrivateKey = UsEr1PRIVATEkEyUsEr1PRIVATEkEyUsEr1PRIVATE
+  [Peer]
+  PublicKey = SeRvErPUBLICkEySeRvErPUBLICkEySeRvErPUBLICk
+  AllowedIPs = 0.0.0.0/0, ::/0
+  Endpoint = 1.2.3.4:5544
+  PersistentKeepalive = 10
+=== Start the client ===
+Start Wireguard on with
+  sudo wg-quick up wg0c
+and check if the VPN tunnel is up and running with
+  wg show
+If needed, you can kill the tunnel with
+  sudo wg-quick down wg0c
+=== Throubleshooting ===
+  - Do not mess up the keys - it's quite easy to switch client and server, public and private (and break the tunnel)
+  - If you have a firewall running on your server, open the corresponding UDP port (5544 in the example above)
+  - If you are behind the Great Firewall, probably it will not work