UPnP Nat

Automatic port forwarding

UPnP Nat Client helps to automatically enable port forwarding depending on the network (gateway identifiers) on the router.

Upnp-Nat must be activated on the router. With the Fritzbox you have to allow UPnP-Nat for a host device.

List

All port forwarding can be seen in the list, per Gateway identifiers and Listen/port.

  1. Adds a new port forwarding for UPnP Nat.

  2. Entries for UPnP Nat.

Status

Gray status shows that we are not currently in the gateway, these port forwarding are being ignored.

A red status indicates that port forwarding could not be set up automatically. This could be a problem with:

  • UPnP Nat is not active on the router

  • The device does not have permission for UPnP Nat. (e.g. Fritzbox)

  • The port is already taken and cannot be released again.

The green status indicates that port sharing has been set up.

Add

Adds UPnP Nat port forwarding:

  1. Gateway network assignment: Select your gateway. The gateways of "Gateway identifiers" are displayed here.

  2. Gateway address: Enter the IP address of the gateway (router) on which UPnP Nat is requested.

  3. Public port: Port that is opened to the Internet.

  4. Client address: Enter the target IP address here. If it is FlyingFish and not another application from another system, you can simply use the "Use Host address by DHCP".

When activating "Use Host address by DHCP" the host's IP, which it received as an IP, is always used automatically.

  1. Privat port: Here you enter the port which is located in the network and which should be released to the outside world on the Internet. Or select a Listen directly.

  2. TTL: The time (in seconds) for how long the port forwarding requested by the client is valid. Default is 36000 seconds.

  3. Protocol: What protocol is used for port forwarding? The router then only passes on this protocol. TCP and UDP can be selected.

  4. Description: Description for port forwarding.

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