Why a VPN Matters: Commercial and Open-Source VPN Services Compared
Few security tools are as misunderstood as the VPN. In advertising it is a way to watch another country's ...
PHP2Shell Explained: Fix It on Linux, cPanel, Plesk, CWP and Windows
Status as of 30 October 2026. This is a fast-moving issue. We list what the PHP project and the ...
Best Free Security Tools for Windows and Linux Servers (2026)
Good server security does not require an enterprise budget. A large share of the tools that professional security teams ...
Linux Server Hardening Guide: 20 Steps to Secure a Production Server
A freshly installed Linux server is not secure. It listens on more ports than you need, accepts password logins, ...
Plesk Troubleshooting: Fix 502, 504 and Services Not Starting
Plesk is stable when it works, but when a site shows 502 Bad Gateway, a panel login hangs, or ...
Linux OOM Killer: Troubleshoot Out-of-Memory Kills and Swap
You wake up to find MySQL has stopped, a site is down, and there is nothing useful in the ...
Auditd on Linux: Detect Intrusions and File Tampering
When a server is compromised, the story is almost always written in its logs: a login from a strange ...
cPanel Server Maintenance Checklist: Daily, Weekly, Monthly
Most cPanel outages are not mysterious. They come from a full disk nobody noticed, a failed backup nobody checked, ...
cPanel Inode Limit Reached or Disk Full? How to Fix It
When a cPanel account stops accepting uploads, WordPress shows "Disk quota exceeded", or email bounces with "mailbox full", the ...
pfSense Site-to-Site IPsec VPN: Connecting Two Networks Securely
A site-to-site IPsec VPN lets two separate networks — a branch office and headquarters, or two data centers — ...