Increase SSH security: change the port, block root login, and use TCP Wrappers. A complete guide to configuring the sshd_config file.

Secure accounts after breaches! Learn to enforce periodic password changes on Linux. Use the chage command and set PASS_MAX_DAYS. Increase server security.

Protect your Linux server against brute force: installation and configuration of Fail2Ban, jail.local, and iptables rules.

Change your MySQL password quickly and safely! A guide: how to use mysqladmin (requires SUPER) and SQL queries (SET PASSWORD, UPDATE).

How to back up MySQL? Compare mysqldump with the binary method. Practical examples: dump, compression, remote SSH backup, and restoring databases.

Secure your server! A guide to installing Rkhunter, scanning for rootkits and backdoors, and configuring periodic Cron reports. A complete tutorial.

Back up to Dropbox from the Linux console! Full guide: installing the CLI client, symbolic links, selective sync, and LAN Sync.

How to quickly add Windows to the GRUB 2 menu? See how the os-prober tool works: it automatically finds systems and updates the bootloader configuration.

Installing an SSL certificate on Nginx: generating a CSR (OpenSSL), obtaining the certificate, and configuring the HTTPS (301) redirect.

Get a free SSL certificate! Compare the DV, OV, and EV types and see a step-by-step guide on how to get a trusted SSL from StartSSL. Check it out!