NAT traversal refers to the common problem in TCP/IP networkingof establishing connections between hosts in private TCP/IPnetworks which use NAT devices
Client-based IPsec VPN connections often do not work when passingthrough a NAT device as the IKE and IPsec protocols were notdesigned to work through NAT. NAT Traversal is an add-on to the IKEand IPsec protocols that allows them to work when beingNATed.
NAT traversal is only used if both endpoints support it.
D-Link products that currently supportNAT traversal include
DS-601/605 (D-Link VPN software)
DI-804HV (from firmware 1.43)