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<td width="20%">[[Managing VMware Virtual Networks and Adapters|Previous]]<td align="center">[[VMware Server 2.0 Essentials|Table of Contents]]<td width="20%" align="right">[[VMware Server 2.0 DHCP Configuration|Next]]</td>
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<td width="20%">Managing VMware Virtual Networks and Adapters<td align="center"><td width="20%" align="right">VMware Server 2.0 DHCP Configuration</td>
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Network Address Translation (NAT) is a mechanism whereby a number of different computers, typically on a private internal network, are represented by a single external IP address. When one of the clients on the private network communicates with a remote system it does so through a NAT device which modifies the data to make it appear that it has been sent from the shared NAT IP address. When the remote system responds, the NAT device directs the response to the original client that initiated the connection.
To configure a port forwarding rule, click on one of the two ''Add...'' buttons (depending on whether the forwarding is to apply to UDP or TCP traffic) and enter the ''Host port'' on which arriving traffic is to be forwarded, together with the IP address and port of the destination virtual machine. In addition, an optional description of the port forwarding rule may be entered into the ''Description'' field. Once configured, any traffic arriving on the specified port of the host system will be forwarded to the specific port of the designated virtual machine.
* '''DNS''' - When clicked, the '''DNS...''' button allows DNS servers to be configured for use with the NAT device as illustrated in the following figure:
== Configuring NAT on Linux Hosts ==
Unfortunately, VMware Server on Linux currently lacks a user friendly equivalent of the Windows Manage Virtual Networks tool, instead requiring the manual editing of the ''/etc/vmware/vmnet8/nat/nat.conf'' file (keeping in mind that the vmnet8 name will need to be changed if the settings are to be configured for a custom created virtual network).
The ''nat.conf'' file contains a number of different sections, each allowing a different aspect of the NAT device to be configured:
As many port UDP forwarding directives as necessary may added to this section of the NAT configuration file.
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