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The UPnP protocol is used for many modern applications, like most DirectX games, as well as for various Windows Messenger features like remote assistance, application sharing, file transfer, voice, and video from behind a firewall.
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| Property | Description |
|---|---|
| allow-disable-external-interface (yes | no ; Default: yes) | whether or not should the users are allowed to disable the router's external interface. This functionality (for users to be able to turn the router's external interface off without any authentication procedure) is required by the standard, but as it is sometimes not expected or unwanted in UPnP deployments which the standard was not designed for (it was designed mostly for home users to establish their own local networks), you can disable this behavior |
| enabled (yes | no ; Default: no) | Enable UPnP service |
| show-dummy-rule (yes | no ; Default: yes) | Enable a workaround for some broken implementations, which are handling the absence of UPnP rules incorrectly (for example, popping up error messages). This option will instruct the server to install a dummy (meaningless) UPnP rule that can be observed by the clients, which refuse to work correctly otherwise |
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| Property | Description |
|---|---|
| interface (string; Default: ) | Interface name on which uPnP will be running |
| type (external | internal; Default: no) | UPnP interface type:
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| forced-external-ip (Ip; Default: ) | Allow specifying what public IP to use if the external interface has more than one IP available. |
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Now once the client from the internal interface side will send sends UPnP request, dynamic NAT rules will be created on the router, example rules could look something similar to these:
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