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Using Netsh command to troubleshoot NAT issues

With Windows 2003, you can use Netsh Routing IP NAT Commands to troubleshoot NAT issues. For example, Netsh Routing IP NAT show interface displays the following information that may help you to check the NAT settings.

NAT LAN Configuration

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Mode              : Private Interface

NAT WAN Configuration

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Mode              : Address and Port Translation with Firewall Enabled

NAT Static Port Mapping Configuration

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Protocol          : TCP

Public address    : 0.0.0.0

Public port       : 21

Private address   : 127.0.0.1

Private port      : 21

Protocol          : UDP

Public address    : 0.0.0.0

Public port       : 500

Private address   : x.x.x.x

Private port      : 500

Protocol          : UDP

Public address    : 0.0.0.0

Public port       : 4500

Private address   : 127.0.0.1

Private port      : 4500

Protocol          : TCP

Public address    : 0.0.0.0

Public port       : 3389

Private address   : 127.0.0.1

Private port      : 3389

Protocol          : UDP

Public address    : 0.0.0.0

Public port       : 1701

Private address   : 127.0.0.1

Private port      : 1701

Protocol          : TCP

Public address    : 0.0.0.0

Public port       : 1723

Private address   : 127.0.0.1

Private port      : 1723

NAT Internal Configuration

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Mode              : Private Interface

Related Topics

Troubleshooting Windows NAT issues