CLI

https://blog.scottlowe.org/2021/08/04/starting-wireguard-interfaces-automatically-launchd-macos/

wg-quick up wg0
wg-quick down wg0

Generate Keys

umask 077
wg genkey | tee privatekey | wg pubkey > publickey

Create w0.conf file in /usr/local/etc/wireguard

[Interface]
PrivateKey = <private-key-generated-earlier>
Address = <vpn-ip-address-for-this-interface>
 
[Peer]
PublicKey = <public-key-for-peer-system>
Endpoint = <public-ip-address>:51280
AllowedIPs = <vpn-ip-address-for-peer-interface>, <additional-cidrs>
PersistentKeepalive = 25