Abstract: A method of communication that includes sending a first message from user equipment to a server, requesting a home agent and/or a home address. The method also includes authenticating the user equipment and providing the home agent and/or home address only when the user equipment is authenticated. Also, a communication system, a server, and user equipment that are configured to implement the method.

Abstract: A system for selectively updating an address of a mobile node capable of roaming in a home communication network and at least one visited network. The system including a database for storing at least one data entry which is a mapping between a humanly-readable identifier indicating the mobile node and a machine-readable identifier indicating a physical address at which the mobile node can be reached. A home agent in the home network has a connection to the database, and is operable to receive an update message from the mobile node when the mobile node roams into the visited network. Also there are units for determining whether the machine-readable identifier of the at least one entry in the database should be updated, wherein the database is updated if the update message additionally includes the humanly-readable identifier.

Abstract: The present invention provides location privacy against third parties while allowing route-optimized communication between the correspondent node and the mobile node. The mobile node's home address is hidden from an external observer thereby thwarting traffic analysis based attacks where a Home Address is correlated with a Care of Address of a mobile node (MN). A “privacy label” is used in place of a home address associated with the mobile node. The privacy label is supplied by the mobile node to the correspondent node in a way that that allows the privacy label to be bound to the home address, but does not allow the home address to be visible during the exchange. The privacy label may be also used to help prevent against replay attacks.

Abstract: A method and system for supporting mobile routers in Internet Protocol version 6 (IPv6) is provided. A mobile router obtains a care-of-address associated with an address configuration. The mobile router registers the care-of-address with a home agent. A bi-directional tunnel is established between the mobile router and the home agent. Packets are then forwarded via the bi-directional tunnel.