The whitelist-only enable command enables URL filtering that supports the whitelist mode only.
The undo whitelist-only enable command disables URL filtering that supports the whitelist mode only.
By default, URL filtering that supports the whitelist mode only is disabled.
To enable URL filtering in the whitelist mode without other complex configurations, you can run the whitelist-only enable command.
After the function is enabled, the data flow that matches the whitelist is allowed, and the data flow that does not match the whitelist is blocked.