Retrieving further informations about a host

Hi,
do you know these links?
https://forum.checkmk.com/t/plugin-to-connect-check-mk-with-other-systems/20674/2
https://docs.greenbone.net/GSM-Manual/gos-3.1/de/connecting.html#nagios
https://docs.greenbone.net/GSM-Manual/gos-5/en/connecting-other-systems.html#nagios

Karl