Multi-tiered distributed security authentication and filtering. One embodiment comprises managing user access to one or more computing resources, by centrally maintaining user subscription information comprising user authentication information and system authorization information, and providing relevant subscription information from the user subscription information to one or more remote computing systems. Managing user access further includes, in a remote computing system, authenticating a user login to the remote computing system based on user authentication information from said relevant subscription information, and upon user authentication, selectively authorizing user access to computing resources of the remote computing system based on system authorization information from said relevant subscription information.