VPS: Security & SSL Guides
Set up, secure and manage your FimuroHost VPS: SSH, firewalls, web servers, Docker, SSL and backups.
Security & SSL Articles
7 articles
How to Create a Sudo User and Disable Root Login on Your VPS
Create an everyday admin user with sudo rights on Ubuntu, Debian or AlmaLinux, test it safely, then stop direct root logins over SSH to cut off the most common attack.
How to Set Up SSH Key Login and Change the SSH Port on Your VPS
Create an SSH key on Windows, macOS or Linux, add it to your VPS, turn off password logins, and move SSH to a new port without locking yourself out, including Ubuntu 24.04 socket setup.
How to Set Up a Firewall on Your VPS with UFW or firewalld
Block everything except the ports you need on your Linux VPS: step-by-step UFW rules for Ubuntu and Debian, firewalld rules for AlmaLinux and Rocky, and how to avoid locking yourself out.
How to Install and Configure Fail2ban on Your VPS
Install Fail2ban on Ubuntu, Debian or AlmaLinux to automatically ban IP addresses that keep failing SSH logins, set sensible ban times, whitelist your own IP and unban addresses.
How to Enable Automatic Security Updates on Your VPS
Keep your Linux VPS patched without logging in every day: set up unattended-upgrades on Ubuntu and Debian or dnf-automatic on AlmaLinux and Rocky, and handle reboots safely.
How to Install a Free SSL Certificate on Your VPS with Certbot
Get a free Let's Encrypt SSL certificate for sites on your VPS with Certbot for Nginx or Apache, switch on HTTPS redirects, confirm auto-renewal and fix common validation errors.
How to Secure MySQL or MariaDB on Your VPS
Lock down MariaDB or MySQL on your VPS: run the secure installation script, create least-privilege users, keep the database off the internet and connect remotely through an SSH tunnel.
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