After installing Manjaro on my notebook, I was astounded to see that unlike numerous other distributions of Linux it did not enable a firewall by default - especially since it ships with iptables and its user-friendly frontend, ufw.
Admittedly, this would not be too big of a deal if I did not run services on my laptop nor connected to public networks once in a while, but even then, having a firewall configured let’s me work more soundly. Here is how I set up and enabled iptables on Manjaro using ufw:
To Action From
-- ------ ----
SSH ALLOW Anywhere
SSH (v6) ALLOW Anywhere (v6)