A method and arrangement for providing security through network address translations using tunneling and compensations

摘要

Address translation is provided by a network address translator (305) for communication of data packets between a first device and a second device. At least one of the devices sends at least one keepalive packet before a time out of a determined network address translation. In response to receiving the at least one keepalive packet, the NAT maintains the determined network address translation for the communication of data packets between the first device and the second device.