Abstract: The invention concerns a method for controlling access to an Internet site from said site address. The inventive method consists in: registering said sites in a hosting service; recording data identifying users of the hosting service and data concerning each of said users including access rights to one or several hosted sites; verifying for every request for access to a hosted site address whether said request originates from a registered user and whether said user has access rights for said address.

Abstract: A system for synchronizing data between service portals, each hosting at least one personal information manager (PIM) service and each of the portals being accessible by means of remote access terminals. The system includes first data synchronization means adapted to establish a correspondence between data stored in the portals. The first synchronization means includes a client-server architecture. The client and the server of the architecture respectively comprise a module hosted in one of the portals and communicating with a server implementing the personal information manager service of the portal, and a synchronization module hosted within at least the other portal and communicating with a server hosting a different personal information manager service. The modules communicate via a computer network.

Abstract: The invention concerns a method for controlling access to an Internet site from said site address. The inventive method consists in: registering said sites in a hosting service; recording data identifying users of the hosting service and data concerning each of said users including access rights to one or several hosted sites; verifying for every request for access to a hosted site address whether said request originates from a registered user and whether said user has access rights for said address.