Creating an Internal Exposed Host
A device on the home network might sometimes require complete and unblocked access to the network. Granting this access can be accomplished by designating that particular device as an internal exposed host, effectively routing all unknown traffic to the device. This capability is important for handling new and unknown scenarios, and also allows a number of multiplayer gaming scenarios.
To support applications that do not work through NAT because of unsolicited traffic from the public network, this setting allows one host on the internal network to be forwarded all traffic that does not correlate to an existing address mapping.
Note The internal exposed host does not guarantee correct functionality of all classes of applications through the NAT. For example, if an application embeds addressing information in the data stream, the application may not work correctly through translation, because only protocol headers are translated.
Also, you should use an internal exposed host with caution, because designating an internal exposed host removes the security provided by the NAT for the specified host.
To create an internal exposed host
Set the HKEY_LOCAL_MACHINE\Comm\ConnectionSharing\InternalExposedHost registry key equal to the IP address of the device that you want to expose to the Internet.
Note Setting the InternalExposedHost subkey to a host name does not work. You must use an IP address when setting this subkey.
Last updated on Friday, April 02, 2004
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