# 访问控制

点击域名列表中的一个域名，然后点击 **访问控制**。

您可以启用 IP 限制、地理位置限制、Referer 限制重置和 UA 限制。这些功能可以调节对 Zenlayer CDN 的访问，并提高服务安全性。

<figure><img src="/files/9Zv5jWYaeJ5Lwsh8PH2h" alt=""><figcaption><p>访问控制</p></figcaption></figure>


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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://docs.console.zenlayer.com/welcome/cn/content-delivery-network/domain-management/access-control.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.