To use the service as a layer in your QGIS map:
(NIWA staff using the internal NIWA network must have the proxy server setup as described by Sadie below)
The service endpoint (URL) for QGIS to access the GEBCO WMS service is:
This image shows NIWA climate stations (red dots from a public NIWA WFS service) overlaid on the GEBCO WMS layer added to QGIS as described above.
Troubleshooting for inexperienced players:
If you get an error message when trying to connect to this WMS service that the connection has timed out, and this is the first time that you have used a WMS service on QGIS, you will need to set up your network settings with the NIWA proxy details as below: