Posted inSecurity
Securing Sudo with 2FA: The Final Defense Against Root Hijacking
Hackers have your password but not your phone? They'll be stopped in their tracks. A guide to adding a 2FA layer to sudo for ultimate root protection on Linux.
Posted inCentos
Setting Up Password Policies with libpwquality on CentOS Stream 9: Enterprise Security in Practice
A practical guide to configuring libpwquality and PAM on CentOS Stream 9 to enforce enterprise password policies — comparing pam_cracklib vs pam_pwquality, detailed pwquality.conf configuration, combining password aging with chage, and real-world testing with the pwscore CLI.
Posted inSecurity
Mastering Linux PAM: Hardening Passwords and Stopping Brute-force Attacks for Your Server
A guide to upgrading Linux PAM security: Enforcing strong passwords, auto-locking accounts during brute-force attacks, and integrating Multi-Factor Authentication (MFA).
Posted inFedora
Mastering Authselect on Fedora: Professional and Secure PAM Configuration Management
Stop manual PAM editing! Learn how to use authselect on Fedora to securely manage system authentication, from SSSD configuration to handling faillock account lockouts.
Posted inCentos
How to Install and Configure a Secure FTP Server with vsftpd on CentOS Stream 9: SSL/TLS and Virtual Users
A guide to installing vsftpd on CentOS Stream 9 with SSL/TLS (FTPS) and virtual users — completely isolating FTP accounts from system accounts. Includes detailed PAM, firewalld, and SELinux configuration based on real deployment experience.