UFW is a convenient wrapper around iptables. 1. Checking and installing UFW sudo apt update sudo apt install ufw -y Examination: ufw status Most likely: Status: inactive. This is normal. 2. You must allow SSH (otherwise you'll crash!) sudo ufw allow OpenSSH 3. Allow the required services For web server: sudo ufw allow 80/tcp # HTTP sudo ufw allow 443/tcp # HTTPS If you are planning Python / API (e.g. 8000): sudo...
On your local computer, in your home directory, find the .ssh folder, if it doesn't exist, create it. mkdir ~/.ssh For the first login via SSH, we write in the terminal ssh username@your.ip.address When a question appears, do this: Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Be sure to answer yes not y After this: The key will be saved in ~/.ssh/known_hosts SSH will ask for the user's password. Now,...