Fb Config.anom -

: In Settings & Privacy > Settings > Privacy , use the option to "Limit the audience for posts you've shared with friends of friends or public" to retroactively hide old content.

: Disable the setting that allows search engines outside of Facebook to link to your profile. fb config.anom

To provide a more specific guide, could you clarify if is a specific file name you found or if you are trying to configure anonymous features on a page or group? : In Settings & Privacy > Settings >