MR600 manual: If you wish to block all internet browsing access, do not add any keyword to the Whitelist.

Does "all internet browsing access" include every port between 1–65535 or just 80, 443 and possibly 8080, and is port range dependent on router's hardware version (between V1–V5)?

I wish to prevent a Chinese robot vacuum from calling home and while I believe such communication will use the port 443, I'd like to be 100% confident no data goes anywhere outside of LAN.