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Configuring Advanced Windows Firewall Rules
Configuring advanced Windows Firewall rules with PowerShell, including the network profile mistake that silently limits a rule’s scope.
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Setting Up ModSecurity as a Web Application Firewall for Apache2
Setting up ModSecurity with the OWASP Core Rule Set as a real Web Application Firewall for Apache2, and why to start in detection mode.
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A Practical Linux Server Hardening Checklist
A practical Linux server hardening checklist: SSH lockdown, firewall defaults, fail2ban, and automatic security updates.