Data_source_proxy_whitelist does not work

Hello,

I would like to limit the number of data sources and, using the data_source_proxy_whitelist configuration, add only selected ones. I understand that only those on the list will be able to be correctly added to the Data Source in Grafana, the connection test will be successfully conducted, and I will be able to use Explore and query data. Data sources that are not on the list should not pass this test, and I should not have access to the data. Is that correct?

Currently, I have configured:

data_source_proxy_whitelist = 192.168.0.111:3100

but I can still, for example, connect a Zabbix Data Source from another server.

Please help.