68 lines
2.5 KiB
Markdown
68 lines
2.5 KiB
Markdown
---
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title: Wireguard
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description: How to configure a wireguard endpoint on OpenBSD
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tags:
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- OpenBSD
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- vpn
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---
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## Introduction
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OpenBSD does things elegantly as usual : where linux distributions have a service, OpenBSD has a simple `/etc/hostname.wg0` file. The interface is therefore managed without any tool other than the standard ifconfig, it's so simple and elegant!
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## Configuration example
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Here is a configuration example to create a tunnel listening on udp port 342 and several peers :
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{{< highlight cfg >}}
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wgport 342 wgkey '4J7O3IN7+MnyoBpxqDbDZyAQ3LUzmcR2tHLdN0MgnH8='
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10.1.2.1/24
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wgpeer 'LWZO5wmkmzFwohwtvZ2Df6WAvGchcyXpzNEq2m86sSE=' wgaip 10.1.2.2/32
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wgpeer 'SjqCIBpTjtkMvKtkgDFIPJsAmQEK/+H33euekrANJVc=' wgaip 10.1.2.4/32
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wgpeer '4CcAq3xqN496qg2JR/5nYTdJPABry4n2Kon96wz981I=' wgaip 10.1.2.8/32
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wgpeer 'vNNic3jvXfbBahF8XFKnAv9+Cef/iQ6nWxXeOBtehgc=' wgaip 10.1.2.6/32
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{{< /highlight >}}
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Your private key goes on the first line as argument to `wgkey`, the other keys are public keys for each peer.
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To re-read the interface configuration, use :
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```sh
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sh /etc/netstart wg0
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```
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## Administration
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Private keys can be generated with the following command :
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{{< highlight sh >}}
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openssl rand -base64 32
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{{< /highlight >}}
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The tunnel can be managed with the standard `ifconfig` command:
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{{< highlight sh >}}
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root@yen:~# ifconfig wg0
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wg0: flags=80c3<UP,BROADCAST,RUNNING,NOARP,MULTICAST> mtu 1420
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index 4 priority 0 llprio 3
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wgport 342
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wgpubkey R4A01RXXqRJSY9TiKQrZGR85HsFNSXxhRKKEu/bEdTQ=
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wgpeer LWZO5wmkmzFwohwtvZ2Df6WAvGchcyXpzNEq2m86sSE=
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wgendpoint 90.66.117.156 1024
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tx: 158515972, rx: 151576036
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last handshake: 93 seconds ago
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wgaip 10.1.2.2/32
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wgpeer SjqCIBpTjtkMvKtkgDFIPJsAmQEK/+H33euekrANJVc=
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wgendpoint 90.66.117.156 51110
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tx: 30969024, rx: 14034688
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last handshake: 9527 seconds ago
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wgaip 10.1.2.4/32
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wgpeer 4CcAq3xqN496qg2JR/5nYTdJPABry4n2Kon96wz981I=
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wgendpoint 90.66.117.156 46247
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tx: 36877516, rx: 19036472
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last handshake: 23 seconds ago
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wgaip 10.1.2.8/32
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wgpeer vNNic3jvXfbBahF8XFKnAv9+Cef/iQ6nWxXeOBtehgc=
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wgendpoint 90.66.117.156 1025
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tx: 150787792, rx: 146836696
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last handshake: 43 seconds ago
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wgaip 10.1.2.6/32
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groups: wg
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inet 10.1.2.1 netmask 0xffffff00 broadcast 10.1.2.255
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{{< /highlight >}}
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