SECURITY PARAMETER INDEX MULTIPLEXED NETWORK ADDRESS TRANSLATION

摘要

A security parameter index, SPI, network address translation, NAT, node, or SPINAT node, in an IP communications network is disclosed. The SPINAT node is configured to identify a potential collision arising from the specification of the same SPI value for use in communications by two or more client nodes of the SPINAT node. The SPINAT node assigns different IP-addresses for the SPINAT node for use by peer nodes communicating respectively with each of the client nodes.