> For the complete documentation index, see [llms.txt](https://docs.radiusaas.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.radiusaas.com/ja/ptaru/akusesutorru/rules/zheng-ming-shu-kuo-zhang.md).
# 証明書拡張
証明書拡張を使用すると、証明書に含まれるフィールドを登録できるため、ルールがそれを直接読み取れるようになります。これは、自社の PKI が発行するプライベートなカスタム OID でも、サブジェクト、SAN、発行者属性などの標準フィールドでも構いません。登録すると、その拡張は、任意のルールの証明書属性フィルターまたは動的割り当てにおけるソースとして表示されます。
{% hint style="info" %}
現在、Microsoft Intune や Jamf Pro を含む多くの MDM システムでは、SCEP プロファイルにカスタム証明書拡張を追加することはサポートされていません。
そのため、代わりに証明書のサブジェクト名を使用して [VLAN を動的に割り当てることを推奨します](https://docs.radiusaas.com/admin-portal/settings/rules#vlan-assignment).
{% endhint %}
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.
Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:
```
GET https://docs.radiusaas.com/ja/ptaru/akusesutorru/rules/zheng-ming-shu-kuo-zhang.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.
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.
