fq-book
Detailed Explanation of Network Proxy and VPN Applications
...The material discusses how proxy and VPN systems work, while also covering technical topics such as IP blocking, port blocking, DNS-related issues, certificate problems, and connection interruption behavior. It uses Docsify for online presentation and can be deployed through GitHub Pages or viewed locally. The repository is intended as a reference guide for learning and research, with practical sections alongside conceptual explanations. Its value comes from combining tool-oriented guidance with broader explanations of how network access restrictions and proxy systems operate.