SimeonOnSecurity’s Guides

Learn how to improve website security and user trust by preloading HSTS settings on Chrome and Firefox. Follow our step-by-step guide for smooth implementation.

Become proficient in Git with this comprehensive guide covering everything from installation and configuration to branching, merging, and collaboration.

Discover the best methods for handling offline Linux updates on Ubuntu/Debian and CentOS/RHEL systems, using local repositories or caches.

Learn how to automate Linux patching and updates using Ansible, covering various distributions and setup instructions.

Learn how to update the firmware of Ubiquiti Unifi UDM Pro and UDM SE offline through command line SSH for optimal performance and security.

simplify the process of updating Windows systems by automating with Ansible - step-by-step instructions and best practices included.

Learn how to set up Cloudflare Tunnels to simplify and protect your network traffic, enhancing performance and security.

Complete 2026 guide to Linux file hashing using sha256sum, md5sum, sha1sum commands. Learn file integrity verification, hash comparison, automation, and best practices for security.

Complete guide to obtaining file hashes on Windows using PowerShell Get-FileHash. Learn SHA256, MD5, SHA1 hash verification, comparison, and automation for security and integrity checks in 2026.

Learn how to effectively set and handle time sources in Windows domains and standalone machines to ensure accurate time synchronization and avoid potential issues.