document sftp server

_toc.yml

@@ -64,6 +64,7 @@ chapters:
           - file: admin-guide/configuration/metrics_telegraf
           - file: admin-guide/configuration/ntp_server
           - file: admin-guide/configuration/nfs_server
+          - file: admin-guide/configuration/sftp_server
           - file: admin-guide/configuration/ssh_host_hopping
           - file: admin-guide/configuration/citrix_vda
           - file: admin-guide/configuration/configuration_email

admin-guide/configuration.md

@@ -40,6 +40,7 @@ Here starts a so far small collections of configuration guides for sysadmins of
 ## Special Installations
 - [NTP Server](configuration/ntp_server)
 - [NFS Server](configuration/nfs_server)
+- [SFTP Server](configuration/sftp_server)
 - [SSH Host Hopping as Root (e.g. between cluster members)](configuration/ssh_host_hopping)
 - [Install Citrix VDA](configuration/citrix_vda)
 - [Sending / Relaying Emails](configuration/configuration_email)

admin-guide/configuration/sftp_server.md

@@ -0,0 +1,12 @@
+# SFTP Server
+
+Per default SFTP is enabled in the `sshd` configuration. You may disable it with:
+
+```
+ssh_server::sftp::enable: false
+```
+or change it with e.g.:
+```
+ssh_server::sftp::server: '/usr/libexec/openssh/sftp-server -l INFO'
+```
+which configures more logging.