> For the complete documentation index, see [llms.txt](https://docs.parallels.com/landing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.com/landing/ras-mp-guide/v20-ja-jp/saito/duo-yao-su-ren-zheng.md).

# 多要素認証

多要素認証（MFA）を設定するには、**\[サイト設定]** > **\[接続]** > **\[多要素認証]** に移動します。

多要素認証を使用する場合、ユーザーはアプリケーションリストを取得するために連続する 2 つの段階経由で認証を実行する必要があります。この場合、ネイティブ認証（Active Directory/LDAP）と以下の MFA のうちいずれかが使用されます:

* [RADIUS](https://download.parallels.com/ras/v19/docs/ja_JP/Parallels-RAS-19-Management-Portal-Guide/49969.htm)
  * Azure MFA（RADIUS）
  * Duo（RADIUS）
  * FortiAuthenticator（RADIUS）
  * TekRADIUS
  * RADIUS
* TOTP
  * [Google Authenticator](https://download.parallels.com/ras/v19/docs/ja_JP/Parallels-RAS-19-Management-Portal-Guide/46886.htm)
  * Microsoft Authenticator
  * TOTP（時間ベースのワンタイムパスワード）
* Deepnet
* SafeNet

なお、本ガイドの執筆時点で RAS 管理ポータルでは、RADIUS または TOTP MFA プロバイダーを追加/構成する操作のみを実行できます。他のプロバイダーを設定するには、デスクトップベースの Parallels RAS Console を使用する必要があります。


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