Hi Dominik,
KNIME uses the Eclipse and Java standard proxy functionalities. Per default the Active Provider “Native” is activated and that will use the Java proxy settings.
These are per default the browser proxy settings. These can be changed via the Java Control panel for all Java based applications on the computer: https://www.java.com/en/download/help/win_controlpanel.html
Within the Network settings of the Java Control Panel you can configure that a proxy auto config (PAC) script is used.
The other way to get the global proxy setting would be the usage of the “manual” Active Provider and fill in all needed configurations.
If you are a KNIME Server user these settings could also be stored on the Server and each Client (Analytics Platform) gets the settings on startup via Server Managed Customizations.
On the missing GOPHER and FTP settings: Do you need these settings in a KNIME context?
Best,
Michael