> Source: [sk120940](https://support.checkpoint.com/results/sk/sk120940)

# sk120940 - "Content-Security-Policy HTTP Header missing on port 900" error message when PCI Compliance scan on Security Gateway (on which ClientAuth configured) fails

| Property | Value |
|----------|-------|
| Solution ID | sk120940 |
| Date Created | 2017-10-26 |
| Last Modified | 2018-07-08 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- When running a PCI Compliance scan against the Security Gateway on which ClientAuth is configured, it fails with the following error:  
"Content-Security-Policy HTTP Header missing on port 900"

## Cause

There are missing security headers in the Client Authentication portal.

## Solution

This solution requires authentication. Please log in to view the full solution.

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