Abstract: The method is for sending messages over secure communication links in networks with a mobile terminal and at least one other terminal. A secure communication link is established between a given initial network address of the mobile terminal and the address of the other terminal. The secure communication link defines at least the addresses of the two terminals. The secure communication link supports an encapsulation method to overcome network address translations and/or other translations. When the mobile terminal moves from an initial network address to a new network address, a request message is sent from the mobile terminal to the other terminal to change the secure connection to be between the new address of the mobile terminal and the other terminal. The request is sent using said method to overcome network translations. The other terminal responds to the mobile terminal with a reply message with a description about the overcoming methods supported by the other terminal.

Abstract: The method is for ensuring secure forwarding of a message is performed in a telecommunication network that has at least one terminal from which the message is sent and at least one other terminal to which the message is sent. One or more secure connections are established between different addresses of the first terminal and address of the other terminal. The connections define at least said addresses of the two terminals. When the first terminal moves from one address to another address, a secure connection, which endpoints are the new address of the first terminal and the address of the other terminal, is registered to be at least one of the active connections.

Abstract: The method and network ensure secure forwarding of a message in a telecommunication network that has at least one first terminal and another terminal. The first terminal moves from a first address to a second address. A secure connection between the first address of the first terminal and the other terminal defining at least the addresses of the two terminals is established. When the first terminal moves from the first address to a second address, the connection is changed to be between the second address and to the other terminal by means of a request from the first terminal and preferably a reply back to the first terminal.