![]() Static NAT: Static rules define a fixed address mapping relationship. ![]() There are different types of NAT translation rules: NAT on a gateway device translates the source and/or destination IP addresses, based on the NAT policies or rules to avoid address conflict. To connect two or more networks with overlapping IP addresses, NAT is deployed on the gateway devices connecting the networks. When these networks are connected using VPN over the Internet or across private WAN, the address spaces must not overlap otherwise the communication would fail. Organizations commonly use private IP addresses defined in RFC1918 for internal communication in their private networks. Internet breakout and NAT64 are NOT supported. ![]() Azure VPN Gateway NAT supports the first scenario to connect on-premises networks or branch offices to an Azure virtual network with overlapping IP addresses. ![]()
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