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NGINX SELinux: Fix Permission Denied, 502, and Port Errors


by Danila Vershinin, August 7, 2017

Fix every common NGINX SELinux error: 502 bad gateway from proxy_pass, 403 forbidden on static files, port binding failures, and more. Complete boolean reference table, file context guide, and 11 real-world scenarios with verified one-liner fixes for RHEL, Rocky Linux, and AlmaLinux.

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Varnish as Web Application Firewall


by Danila Vershinin, May 16, 2017

Protect your web application using.. simple Varnish VCL coding.

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Protect Magento 1.x admin in Nginx setup


by Danila Vershinin, March 19, 2017

Protect Magento 1.x administrator interface and Wordpress administrator interface to fight hackers trying to steal credit card data

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Vulnerability in the Linux kernel’s TCP stack implementation


by Danila Vershinin, August 12, 2016

Announcement of discovered vulnerability in the Linux kernel’s TCP stack implementation

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