Category Systems Administration

Linux Web Server Hardening: MAC with AppArmor

How to protect LAMP servers from vulnerable web applications. Mandatory Access Controls with AppArmor. This article is the fifth in the Diamond Hard LAMP series.

Linux Server Hardening: Banning Malicious Traffic

How to use Linux system logs to block malicious traffic. This article is the fourth in the Diamond Hard LAMP series.

Linux Web Server Hardening: WAF for Web Servers

How to protect your web servers with a Web Application Firewall(WAF). Building ModSecurity for Apache. This article is the third in the Diamond Hard LAMP series.

Linux Web Server Hardening: Preventing Apache Information Disclosure

How to prevent Apache from leaking server details. This article is the second in the Diamond Hard LAMP series.

Linux Web Server Hardening: The Basics

How to build the basic security for LAMP Servers. Linux Automatic update, PHPMyAdmin web UI securing, MySQL Secure Setup. This article is the first in the Diamond Hard LAMP series.

Linux Server Hardening: Enforce Strong Passwords

Don’t let one bad password break all your security! How to improve your password security in Linux Servers.

Data Recovery: Sector-By-Sector

How to use simple Linux commands to recover lost data from partially failing hard disk drives.

Lab: Exploiting CVE-2021-29255

Exploiting CVE-2021-29255. How to perform a MITM ARP Poisoning attack.

Windows Client Hardening

Level up your Windows Client defense. How to better secure your local system.

Hardware 2FA Yubikey 5s Review

Hardware 2FA Yubikey 5s Review: How to secure your logins and protect yourself from Black Hat Hackers.

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