A clean, independent knowledge base for Linux, Ethical Hacking, and Open-Source Software.
A hands-on breakdown of Linux privilege escalation. Learn how attackers locate misconfigured 4000 permissions, exploit GTFOBins, and how sysadmins audit and fix them.
A practical breakdown of automated SSH attacks on cloud servers. See live auth.log dictionary attempts and configure Fail2ban to ban attacking IPs in real time.
A hands-on breakdown of DNS cache poisoning, rogue captive portals, and ARP response injection. Learn how lookups get redirected and how to lock down devices with DNS-over-HTTPS.
A hands-on guide to network packet analysis. Learn promiscuous mode, essential display filters, following TCP streams, and catching unencrypted credentials.
Demystify rwx permission strings and octal math (4, 2, 1). Learn why chmod 777 is a bad habit, how to fix SSH key permission errors, and manage file ownership safely.
A hands-on guide to securing Ubuntu/Debian servers. Enforce SSH key logins, move off port 22, configure UFW firewall rules, and jail brute-force bots with Fail2ban.
A hands-on, practical guide to network scanning. Learn host discovery, SYN stealth scans, service version detection, and output parsing without the fluff.