$OpenBSD: README,v 1.3 2019/12/28 13:57:44 jasper Exp $
+-------------------------------------------------------------------------------
| Running ${PKGSTEM} on OpenBSD
+-------------------------------------------------------------------------------
Setting up two OpenBSD peers
============================
Assumptions:
Two nodes, wg1 and wg2 which will use 10.0.0.1 and 10.0.0.2 respectively within
the VPN network. wg1 will be the "server" and wg2 the client. Both nodes use
`tun0` as the tunneling interface. wg1 is reachable for wg2 on 192.168.1.1.
Generating keys
---------------
First generate the private keys and derive the public keys from it for both the
server and client:
# wg genkey | tee server-private.key | wg pubkey > server-public.key
# wg genkey | tee client-private.key | wg pubkey > client-public.key
Networking setup
----------------
On wg1 a few settings are required:
# sysctl net.inet.ip.forwarding=1
# echo 'pass out on egress inet from (tun0:network) nat-to (egress:0)' >> /etc/pf.conf
Configure the tun0 interfaces for wg1:
# ifconfig tun0 up 10.0.0.1 10.0.0.2 netmask 255.255.255.0
and wg2:
# ifconfig tun0 up 10.0.0.2 10.0.0.1 netmask 255.255.255.0
Configure the wireguard_go service on both nodes:
# rcctl enable wireguard_go
# rcctl set wireguard_go flags tun0
# rcctl start wireguard_go
Interface configuration
-----------------------
server.conf would be:
----------8<----------
[Interface]
PrivateKey = <contents of server-private.key go here>
ListenPort = 8080
[Peer]
PublicKey = <contents of client-public.key go here>
AllowedIPs = 10.0.0.2/32
----------8<----------
Apply it on wg1:
# wg setconf tun0 server.conf
and client.conf:
----------8<----------
[Interface]
PrivateKey = <contents of client-private.key go here>
[Peer]
PublicKey = <contents of server-public.key go here>
AllowedIPs = 0.0.0.0/0
Endpoint = 192.168.1.1:8080
----------8<----------
Apply it on wg2:
# wg setconf tun0 client.conf
Now you can reach 10.0.0.1 from wg2 via the tunnel.
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