BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described based on embodiments with reference to the accompanying drawings in which:
FIG. 1 shows a schematic block diagram of a network architecture in which the present invention can be implemented;
FIG. 2 shows an example of a NAT traversal for a Virtual Private Network;
FIG. 3 shows a signaling diagram indicating message exchange and resulting processing steps according to a first embodiment;
FIG. 4 shows a more detailed signaling diagram indicating message exchange and resulting processing steps according to an implementation example of said first embodiment;
FIG. 5 shows a signaling diagram indicating message exchange and resulting processing steps according to a second embodiment
FIG. 6 shows a schematic block diagram of a client device which is connected via a NAT device to a gateway device, according to the first and second embodiments.