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diff --git a/content/docs/alpine/wireguard.md b/content/docs/alpine/wireguard.md new file mode 100644 index 0000000..9652d01 --- /dev/null +++ b/content/docs/alpine/wireguard.md @@ -0,0 +1,61 @@ +--- +title: Wireguard +description: How to configure a wireguard endpoint on Alpine +--- + +## Introduction + +This article explains how to configure wireguard on Alpine. + +## Configuration example + +Here is a `/etc/wireguard/wg0.conf` configuration example to create a tunnel listening on udp port 342 and a remote peers : +```cfg +[Interface] +PrivateKey = MzrfXLmSfTaCpkJWKwNlCSD20eDq7fo18aJ3Dl1D0gA= +ListenPort = 342 + +[Peer] +PublicKey = R4A01RXXqRJSY9TiKQrZGR85HsFNSXxhRKKEu/bEdTQ= +Endpoint = 168.119.114.183:342 +AllowedIPs = 10.1.2.9/32 +PersistentKeepalive = 60 +``` + +Note that there is no ip address in the Interface section, contrary to other operating systems. Putting one here is invalid and wg will fail with an error. + +Your private key goes on the first line as argument to `wgkey`, the other keys are public keys for each peer. In this example I setup a client that can be hidden behind nat therefore I configure a `PersistentKeepalive`. If your host has a public IP this line is not needed. + +To activate the interface configuration, edit `/etc/network/interfaces` : +```sh +auto wg0 +iface wg0 inet static +requires eth0 +use wireguard +address 10.1.2.3/24 +``` + +Then run `ifup wg0`. + +## Administration + +Private keys can be generated with the following command : +{{< highlight sh >}} +openssl rand -base64 32 +{{< /highlight >}} + +The tunnel can be managed with the `wg` command: +```sh +root@hurricane:~# wg +interface: wg0 + public key: 7fbr/yumFeTzXwxIHnEs462JLFToUyJ7yCOdeDFmP20= + private key: (hidden) + listening port: 342 + +peer: R4A01RXXqRJSY9TiKQrZGR85HsFNSXxhRKKEu/bEdTQ= + endpoint: 168.119.114.183:342 + allowed ips: 10.1.2.9/32 + latest handshake: 57 seconds ago + transfer: 1003.48 KiB received, 185.89 KiB sent + persistent keepalive: every 1 minute +``` |