kkuzelka opened a new issue #9510:
URL: https://github.com/apache/airflow/issues/9510
**Apache Airflow version**: 1.10.10
**What happened**:
for any ssh connection with `allow_host_key_change` set to False or unset
Airflow prints
```
WARNING - Remote Identification Change is not verified. This wont protect
against Man-In-The-Middle attacks
```
**What you expected to happen**:
https://airflow.apache.org/docs/stable/howto/connection/ssh.html says
```allow_host_key_change - Set to true if you want to allow connecting to
hosts that has host key changed or when you get ‘REMOTE HOST IDENTIFICATION HAS
CHANGED’ error. This wont protect against Man-In-The-Middle attacks. Other
possible solution is to remove the host entry from ~/.ssh/known_hosts file.
Default is false.```
**How to reproduce it**:
```
ssh_hook = SSHHook(ssh_conn_id=sftp_conn_id)
sftp_client = ssh_hook.get_conn().open_sftp()
```
Let me know if I misunderstood how this should work.
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