UFW Firewall Setup for Ubuntu Web Servers
UFW Firewall Rules for Web Servers: What to Open, What to Block, and Why A newly installed Ubuntu server has every port open by default. This is acce...
Setting Up Fail2Ban on Ubuntu: Complete Guide
Setting Up Fail2Ban on Ubuntu: The Rules That Actually Matter for Web Servers Every publicly accessible server gets probed continuously. Automated bo...
Why BCrypt Cost Factor Matters More
Choosing the right BCrypt cost factor affects both the security of your stored passwords and the performance of your login system. Set it too low and ...
PHP Two-Factor Auth: Implementation Guide
PHP Two-Factor Authentication: A Practical Implementation Guide PHP applications handling sensitive data need more than a strong password to protect ...
Ubuntu Server Hardening Checklist for Production Use
What a Default Ubuntu Installation Actually Leaves Exposed A newly installed Ubuntu server has SSH on port 22 with password authentication enabled, e...
Ubuntu 22.04 Security Hardening: First 30 Minutes on a New Server
Ubuntu 22.04 Security Hardening: The First 30 Minutes on a New Server A newly provisioned Ubuntu server arrives ready to use, but its default configu...