Bind: Can't Assign Requested Address from Ftp.exe Using Winsock Proxy

When you use Ftp.exe from either a Microsoft Windows NT Server or a Microsoft Windows 95 client while it is configured to use the Winsock Proxy, you may get the following error message:

This can be caused by one of the following reasons:

• The IP address of the external interface of the Proxy Server is in the Local Address Table (LAT).
  
  -OR-
• The Proxy Server has one network interface and only one IP address.

Remove any references to external IP addresses from the LAT on the Proxy Server.

If the IP address of an external interface on the Proxy Server is in the LAT, it is considered by the proxy client to be internal. Because the client computer does not have an interface with the same IP address as the external IP address of the Proxy Server, you get the above error message.