Lock down a new Ubuntu VPS against the most common attacks in under an hour.
Cloud & DevOpsPDF · 6 pages· v1.0
4.9A no-nonsense security baseline for any new Ubuntu server. If you've ever spun up a VPS and felt unsure whether you'd left the door open, this is the checklist you follow first. It walks through the high-impact, low-effort steps that block the overwhelming majority of automated attacks: creating a non-root sudo user, enforcing SSH key authentication and disabling password and root login, configuring the UFW firewall, installing Fail2ban to stop brute-force attempts, enabling automatic security updates, and a few kernel and account hardening touches. Each step explains the threat it addresses so you understand why, not just how. The guide is deliberately pragmatic — it focuses on the controls that matter for a typical web or app server, not an exhaustive CIS benchmark. It also includes a final verification section so you can confirm the box is actually locked down, plus warnings about the classic ways people lock themselves out. After this guide you'll have a server that's resistant to drive-by attacks, patches itself for security fixes, and logs and blocks brute-force attempts — a sane default state every server should start from. Free, because every server deserves a secure baseline.
No, and intentionally so. It's the pragmatic 80/20 baseline that stops nearly all automated attacks. It points to where to go deeper if you need compliance.
Not if you follow the order in the guide and keep a second SSH session open while testing. The guide flags every lockout risk explicitly.
Negligibly. It watches log files and adds firewall rules for offending IPs; the overhead is tiny.
It reduces log noise but isn't real security. The guide explains why key-only auth matters far more, and how to change the port if you still want to.
Read the full refund policy and trust & safety terms.