Establishment of a secure tunnel after the connection or handover to the access network

The present invention, in order to prepare for another connection or handover to the access network of the mobile node, to establish a secure tunnel to the ePDG (or pre-established) a method for, on-readable media in the mobile node and computer . Handover, or after the connection of the mobile node to the access network indicated by mechanisms to discover the ePDG, or by reducing the delay of the handover, the mobile node is reachable in the target access network, i.e. as the mobile node can establish a secure tunnel to maintain the reachability list that can be referenced in order to identify one or more the ePDG. Mobile node, if the ePDG reachable for a given access network can be distinguished from the reachability list, the mobile node, after connecting to the given access network secure tunnel to ePDG (in advance) Establish. In an alternative solution, it is possible to use DNS, DHCP, or other mechanisms, to provide information about its neighboring the ePDG (plural) to the mobile node.