Host mcusw
  HostName mcusw.de
  User usw
Host www
  HostName www.usw.lan
  User usw
  ProxyJump mcusw

Host ux5
  HostName ux5.edvschule-plattling.de
  User hthaler
Host ux4
  HostName ux4.edvschule-plattling.de
  User hthaler
Host *
  User usw