---
title: cf.tls_client_auth.cert_verified
description: Returns `true` when an mTLS client presents a valid client certificate.
image: https://developers.cloudflare.com/core-services-preview.png
---

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#  cf.tls\_client\_auth.cert\_verified 

`cf.tls_client_auth.cert_verified` ` Boolean ` 

Returns `true` when an mTLS client presents a valid client certificate.

Also returns `true` when a client presents a valid certificate that was revoked (refer to [cf.tls\_client\_auth.cert\_revoked](https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.tls%5Fclient%5Fauth.cert%5Frevoked/)).

This field defaults to `false` if the connection does not use [mTLS authentication](https://developers.cloudflare.com/ssl/client-certificates/enable-mtls/).

Categories: 
* Request
* mTLS

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