Specifications

CHAPTER 7 Networking
273
To add a new port for either TCP or UDP, click Add. If a port is already listed, you
can change its settings. Select its name in the list, then click Properties. Or click
Remove to remove the selected port.
When you click Add, another dialog box appears. In the Host port field, type the
number of the incoming TCP or UDP port. For example, incoming HTTP requests
are usually on port 80. In the first Forwarding IP address field, type the IP
address of the virtual machine to which you want to forward the incoming
requests. In the second field on that line, type the port number you want to use
for those requests on that virtual machine. This 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. The Description field is
optional. You may use it to identify the service being forwarded (for example,
HTTP). When you have made these settings, click OK.
• You may specify DNS servers to be used by the virtual NAT device. To do so, click
DNS. A dialog box appears. You can change the Policy for using multiple DNS
servers if you prefer to use Rotate or Burst instead of the default setting of Order.
To add a DNS server to the list, click Add. Another dialog box appears. Enter the
DNS server's IP address in the IP address field. The Description field is optional.
When you have made the desired settings, click OK.To change the settings for a
server already in the list, select its entry in the DNS dialog box, then click
Properties. To delete an entry, select the entry, then click Remove. When you
have made the desired changes, click OK.
• You can change the IP address for the NAT device in the Gateway IP address
field. If you need to change the Netmask, click the … button on the Host Virtual
Network Mapping tab of the Virtual Network Editor and choose Subnet.
• If you want to allow only passive mode FTP over the NAT device, deselect the
Active FTP check box.
• You can change the number of minutes to keep the UDP mapping for the NAT in
the UDP timeout field.
• If you change the OUI (Organizationally Unique Identifier) portion of the MAC
address for the virtual machine and subsequently cannot use NAT with the
virtual machine, you should check the Allow Any OUI check box.
• In the Config port field, you can specify a port that can be used to access status
information about the NAT. This option is used for troubleshooting purposes
with VMware technical support only.
• You can change NetBIOS timeout and retry settings.