---
description: Cloudflare One Client checks resources and guides for Zero Trust.
title: Cloudflare One Client checks
image: https://developers.cloudflare.com/og-docs.png
---

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> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/cloudflare-one/llms.txt  
> Use this file to discover all available pages before exploring further.

# Cloudflare One Client checks

Last updated Apr 17, 2026|Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

These device posture checks are performed by the [Cloudflare One Client](https://developers.cloudflare.com/cloudflare-one/team-and-resources/devices/cloudflare-one-client/). To use this feature, you must [deploy the Cloudflare One Client](https://developers.cloudflare.com/cloudflare-one/team-and-resources/devices/cloudflare-one-client/deployment/) to your devices and enable the desired posture checks.

## Supported Client modes

- Traffic and DNS mode
- Traffic only mode
- Posture only mode

## Supported operating systems

| Device posture check | macOS | Windows | Linux | iOS | Android/ChromeOS |
| --- | --- | --- | --- | --- | --- |
| [Antivirus](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/antivirus/) | ❌ | ✅ | ❌ | ❌ | ❌ |
| [Application check](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/application-check/) | ✅ | ✅ | ✅ | ❌ | ❌ |
| [Carbon Black](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/carbon-black/) | ✅ | ✅ | ✅ | ❌ | ❌ |
| [Client certificate](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/client-certificate/) | ✅ | ✅ | ✅ | ❌ | ❌ |
| [Device serial numbers](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/corp-device/) | ✅ | ✅ | ✅ | ❌ | ❌ |
| [Device UUID](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/device-uuid/) | ❌ | ❌ | ❌ | ✅ | ✅ |
| [Disk encryption](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/disk-encryption/) | ✅ | ✅ | ✅ | ❌ | ❌ |
| [Domain joined](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/domain-joined/) | ❌ | ✅ | ❌ | ❌ | ❌ |
| [File check](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/file-check/) | ✅ | ✅ | ✅ | ❌ | ❌ |
| [Firewall](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/firewall/) | ✅ | ✅ | ❌ | ❌ | ❌ |
| [OS version](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/os-version/) | ✅ | ✅ | ✅ | ✅ | ✅ |
| [Require Gateway](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/require-gateway/) | ✅ | ✅ | ✅ | ✅ | ✅ |
| [Require WARP](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/require-warp/) | ✅ | ✅ | ✅ | ✅ | ✅ |
| [SentinelOne](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/sentinel-one/) | ✅ | ✅ | ✅ | ❌ | ❌ |
| [Tanium (legacy)](https://developers.cloudflare.com/cloudflare-one/reusable-components/posture-checks/client-checks/tanium/) | ✅ | ✅ | ✅ | ❌ | ❌ |

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