Setup a firewall on #VanillaOS.

1. Install `ufw` to `abroot` -

```

$ sudo abroot shell

$ sudo apt install ufw

$ exit

$ sudo reboot

```

2. Configure and enable `ufw` -

```

$ sudo which ufw

$ sudo ufw status

$ sudo ufw default deny incoming

$ sudo ufw default allow outgoing

$ sudo ufw enable

```

3. Verify that `ufw` configured `iptables` -

```

$ sudo iptables -L

```

Done.

#Linux🐧