Based on the diagnostic results, the platform suggests one of three hardening levels (Basic, Moderate, Strict). Select “Strict” for PCI-compliant environments. Copy the one-liner install command:
bash <(curl -s https://4server.info/harden/ubuntu22-strict.sh) Finally, deploy the monitoring cron job. Paste the following into your crontab ( crontab -e ): 4server.info
curl -s https://4server.info/agent/diag.py | python3 The script outputs a JSON summary of your server’s health. Based on the diagnostic results, the platform suggests
4server.info offers a lightweight Python script (no external dependencies) that collects system information without installing bloatware. Run: Paste the following into your crontab ( crontab
Are you running a web server, a database server, or a game server? Select the appropriate category. Each profile includes a checklist of baseline metrics (e.g., “open files limit,” “TCP keepalive settings”).
Bookmark it. Fork its scripts. Contribute your own findings. And the next time your server misbehaves at 2 AM, you will know exactly where to turn. Disclaimer: This article is for informational purposes. Always test configuration scripts in a staging environment before applying to production servers.
The internet is full of outdated tutorials (think “Ubuntu 14.04 with PHP 5.6”). 4server.info maintains a strict content freshness policy. Every script and guide is tested against at least three current OS versions before publication.