> Source: [sk173171](https://support.checkpoint.com/results/sk/sk173171)

# sk173171 - The output of the "s_client -host Management_Server_IP_address -port 443 -tls1_1" command shows that TLSv1.1 is used, although only TLSv1.2 is enabled

| Property | Value |
|----------|-------|
| Solution ID | sk173171 |
| Date Created | 2021-04-21 |
| Last Modified | 2021-05-27 |
| Technical Level | Advanced |
| OS | Gaia |

## Symptoms

- , Output of the "s_client -host \<IP address of Management Server\> -port 443 -tls1_1" command in the OpenSSL shell shows that TLSv1.1 is used:

```

SSL-Session:
    Protocol  : TLSv1.1
```

when TLSv1.0 and TLSv1.1 are disabled, and Only TLSv1.2 is enabled.

## Cause

When UDM is enabled on the Management Server, the list of supported TLS versions is configured in the Apache configuration file.

## Solution

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

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