Subconfigurations
You can also specify configuration options in so-called subconfiguration files,
which have the same basic format as the main configuration file. The process
forked to handle the user's connection reads these files. They are read at
run-time, so if they are modified, it is not necessary to restart the server process.
If parsing of the subconfiguration files fails, the connection is terminated
(for host-specific configuration), or access denied (for user-specific
configuration) by the server.
The subconfiguration files are divided into two categories: host-specific and
user-specific.
Subconfiguration files are very flexible and because of that, dangerous if the
logic of the files is not carefully planned. Note: Host-specific
subconfiguration files are always read before the user-specific subconfiguration
files. See the example file sshd2_config.example and the host-specific
and user-specific files in /etc/ssh2/subconfig.