On a Windows host, you can use the virtual network editor to change the gateway IP address, configure port forwarding, and configure advanced networking settings for a NAT network.

NAT Settings



Gateway IP

Specifies the gateway IP address for the selected network.

Port Forwarding

Add a port for port forwarding. With port forwarding, incoming TCP or UDP requests are sent to a specific virtual machine on the virtual network that is served by the NAT device.

Host port

The number of the incoming TCP or UDP port. For example, incoming HTTP requests are usually on port 80.

Virtual machine IP address

The IP address of the virtual machine to which you want to forward the incoming requests.

Virtual machine port

The port number to use for requests on the specified virtual machine. It may be the standard port, such as 80 for HTTP, or a nonstandard port if software running in the virtual machine is configured to accept requests on a nonstandard port.


(Optional) You can use this text box to identify the forwarded service, for example, HTTP.

To change settings for an existing port, select its name and click Properties.

Allow active FTP

Specifies whether to allow only passive mode FTP over the NAT device.

Allow any Organizationally Unique Identifier

Select this setting if you change the organizationally unique identifier (OUI) portion of the MAC address for the virtual machine and subsequently cannot use NAT with the virtual machine.

UDP timeout (in seconds)

Select the number of minutes to keep the UDP mapping for the NAT.

Config port

Select the port to use to access status information about NAT.


Change this value only under the direction of VMware technical support.

DNS Settings

Configure the DNS servers for the virtual NAT device to use.

Auto detect available DNS servers

Select this option to detect the available DNS servers. To add a DNS server to the list, deselect this check box and enter the IP address of the preferred and alternate DNS servers in the Preferred DNS server text boxes.


If you have multiple DNS servers, select the strategy for choosing which server to send a request to. Order sends one DNS request at a time in order of the name. Rotate sends one DNS request at a time and rotates through the DNS servers. Burst sends to three servers and waits for the first server to respond.

Timeout (sec)

Select the number of seconds to keep trying if the NAT device cannot connect to the DNS server.


Select the number of retries.

NetBios Settings

Select NBNS (NetBIOS Name Service) and NBDS (NetBIOS Datagram Service) timeouts and retry settings.