Harden OpenSSH on Linux Servers (Secure sshd_config)
Harden OpenSSH on Linux: disable root login, use key-only auth, change port, and limit users with sshd_config.
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Nginx Reverse Proxy on Linux (Proxy Pass + SSL)
Configure Nginx as a reverse proxy on Linux. Proxy pass to apps, set headers, and terminate SSL with…
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Extend LVM Logical Volume on Linux (Step-by-Step Guide)
Extend an LVM logical volume on Linux when disk is full. Add PV, extend VG/LV, and grow XFS…
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Deploy WordPress with Docker Compose on Linux (Nginx + MySQL Stack)
Deploy WordPress on Linux using Docker Compose. MySQL database, WordPress container, persistent volumes, and production-ready stack file.
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Linux User Management: useradd, usermod & userdel Explained
Manage Linux users with useradd, usermod, userdel, and passwd. Create accounts, set shells, add sudo access, and remove…
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How to Use rsync for Backups on Linux Servers
Use rsync to backup files and sync directories between Linux servers. Local and remote backup examples.
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How to Use journalctl to Read Linux System Logs
Read and filter Linux system logs with journalctl. Troubleshoot services, errors, and boot issues.
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UFW Firewall Basics: Secure Your Linux Server
Configure UFW firewall on Ubuntu and Debian. Allow SSH, HTTP, HTTPS and block unwanted traffic.
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Install and Configure Fail2ban on Linux (SSH Protection)
Protect your Linux server from brute-force attacks with Fail2ban. Block malicious IPs automatically.
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Cron Jobs in Linux: Schedule Tasks with crontab
Schedule automated tasks on Linux with cron and crontab. Daily backups, scripts, and maintenance jobs.
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