# Chapter 3. Web control

이 문서는 HTTP를 운영함에 있어 CentOS와 차별/추가/변경된 사항에 대하여 기술 합니다. 특히 httpd(apache) 2.4와 PHP의 경우 큰 변경 사항이 있으니 참고 하시기 바랍니다.

1. [httpd(apache)](/annyung-3-user-guide/chapter3/chapter3-1-httpd.md)
2. [Nignx](/annyung-3-user-guide/chapter3/chapter3-2-nginx.md)
3. [Lighttpd](/annyung-3-user-guide/chapter3/chapter3-3-lighttpd.md)
4. [PHP](/annyung-3-user-guide/chapter3/chapter3-4-php.md)
5. [Web Access Control](/annyung-3-user-guide/chapter3/chapter3-5-web-acl.md)
6. [Web Monitor agent](/annyung-3-user-guide/chapter3/chapter3-5-web-agent.md)


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://joungkyun.gitbook.io/annyung-3-user-guide/chapter3.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.