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NGINX Secure Link: Signed URLs and Hotlink Protection

by Danila Vershinin, January 29, 2026

Learn how to implement NGINX secure link functionality for signed URLs and hotlink protection. This comprehensive guide covers the HMAC Secure Link module installation, configuration, and client-side token generation in PHP, Python, and Bash.

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NGINX Allow Deny: Complete IP Whitelist & Blacklist Guide

by Danila Vershinin, January 27, 2026

Master NGINX allow and deny directives to control access by IP address. This complete guide covers IP whitelisting, blacklisting, CIDR notation, the geo module for large IP lists, and common pitfalls with tested configurations.

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NGINX Basic Auth with htpasswd: Complete Configuration Guide

by Danila Vershinin, January 26, 2026

Learn how to configure NGINX basic authentication using htpasswd. This complete guide covers password file creation, hash algorithms, WordPress protection, staging site security, SSL integration, and troubleshooting.

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Linux setfacl Command: Complete Guide to ACL Permissions for Read-Only Users and Beyond

by Danila Vershinin, January 18, 2026

Learn how to use the Linux setfacl command to add read-only users to directories, configure recursive ACL permissions, and set default ACLs for new files. This comprehensive guide covers everything from basic syntax to advanced use cases for enterprise-grade access control.

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