I'm interested in setting up some basic security on an Ubuntu 16.04 VPS that I'm working on. I'm reading through these articles:
- My First 10 Minutes On a Server - Primer for Securing Ubuntu | Codelitt Incubator
- My First 5 Minutes On A Server or Essential Security for Linux Servers | Bryan Kennedy's Blog.
I'm reading the section about ufw now. I'm going to be connecting from variable IP addresses via ssh. Given this requirement, what should I set the first line in the screenshot to, to make sure I retain access?