> Source: [sk183905](https://support.checkpoint.com/results/sk/sk183905)

# sk183905 - ClusterXL Members fail to synchronize when running in different Firewall modes

| Property | Value |
|----------|-------|
| Solution ID | sk183905 |
| Date Created | 2025-09-08 |
| Last Modified | 2025-09-15 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20, R81.10 (EOS) |
| OS | Gaia |

## Symptoms

- ClusterXL Members fail to synchronize.

## Cause

ClusterXL Members are running in different Firewall modes (User Space and Kernel Space).

By default, in such different configuration ClusterXL Members cannot synchronize with each other.

## Solution

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

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