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posts/wireguard.md: update ufw rule

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dogeystamp 2024-06-24 00:22:41 -04:00
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@ -199,10 +199,10 @@ be sure to have sane firewall rules before doing this.
> Note: If you use [UFW](https://wiki.archlinux.org/title/Uncomplicated_Firewall) as a firewall like me, you'll also [need to set a rule](https://dietpi.com/forum/t/wireguard-no-handshake-established/15979) to let VPN traffic in.
> Without this, all the `iptables` rules do nothing and your forwarded packets will get blocked.
> Replace the subnet with your VPN subnet:
> Replace `wg0` with your own VPN interface name:
>
> ```
> # ufw allow in from 10.0.0.0/24 to any
> # ufw allow in on wg0 to any
> ```
> Another UFW quirk is that it has its own `sysctl.conf`, which lives at `/etc/ufw/sysctl.conf`.