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Add workaround when applying the settings doesn't work.

Mathieu Simon 2023-11-07 13:42:14 +01:00
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Synology-DSM.md

@ -51,6 +51,12 @@ umac-128-etm@openssh.com
Click on **Save** to close the window **Customize encryption mode**, returning back to the windows **Advanced Settings**. There click on **Save** again to close this window, finally back in the Control Panel, click on **Apply**.
**Hint:** If you get an error saying not changes have been made when applying the changed configuration - even though you actually did change ciphers - DSM doesn't detect changed options in "customized ciphers". In order to apply them nonetheless, do the following steps as a workaround:
* Note the currently-configured SSH port (default: ``22``)
* Change its value to something else such as i.e. ``222``, then click **Apply**
* Then revert the port setting to the previous value and click on **Apply** once more.
## Limitations
At least DSM version 7.2 doesn't allow you reaching a perfect score, since neither host keys, nor host-key algorithms can be updated or modified in a supported way other than by manually modifying ``/etc/ssh/sshd_config``. Also those manual changes are likely overwritten by i.e. system updates or other configuration changes via the DSM web interface.