# Other Devices

The Other Devices page allows you to create a connection between the production network and devices on the subnet of an EI Tunnel Manager unit. The connection uses port forwarding to access the device through the IP address of the EI Tunnel Manager unit. Using this method, you can connect to devices such as a reader, dimensioner, network switch, or computer.

The following examples are typical use cases for port forwarding:

- Accessing the WebHMI of a DataMan reader or a 3D-A1000 dimensioner

- Connecting to a laptop through remote desktop

## Connection Behavior and Timeout

Connections automatically close after 30 minutes to support basic security principles. When a connection closes, all communications stop on that port. Processes in other apps that use the device through the connection also stop.

Connections operate based on the following behavior:

- Newly created connections start in a closed state.

- Editing a connection or opening the WebHMI changes the state to open.

- Opening the WebHMI refreshes the timeout of an active connection, keeping it open.

- To manually start or close a connection, click the Start or Stop action buttons in the user interface.

## Features of the Other Devices User Interface

At first, the Other Devices page only provides an option to create a new connection. The connections you create appear in a list along with their name and network details. The list provides options to edit, delete, access, or filter your connections.

Number | Name | Description
1 | Add New button | Opens the form where you can create a connection for a device.
2 | Delete button | Deletes the selected connections. This button only becomes active after you select one or more connections from the list.
3 | Actions | Several actions are available for each connection in the list.
Action | Description
Start/Stop | Starts or stops the connection.
Edit | Allows you to edit the connection. This action opens the same form used when creating the port forwarding configuration.
Delete | Deletes a connection.
Copy Device Address | Copies the IP address and port number of the device to the clipboard. This action is available only if you select the Other Destination Type when creating the configuration.
Remote Desktop | Downloads an .rdp file for connecting remotely or copies the remote desktop address to the clipboard, depending on the sub-option you select. This action is available only if you select the Remote Desktop Destination Type when creating the configuration. Note: For more information about using an .rdp file, see the in-app help.
Open WebHMI | Opens the WebHMI of the device. This action is available only if you select the WebHMI Destination Type when creating the configuration.
4 | Connection details | The connection list shows details for each connection. Active: The state of the connection, open or closed. Connection active for: The elapsed duration of the current connection. Connections automatically time out after 30 minutes. Name: The unique name given when adding a new connection. Destination: The IP address and port of the device. External Port: The port by which you can access the device through the EI Tunnel Manager unit.
5 | Search field | Filters the connection list. Enter any detail (name, destination, external port) to quickly find a specific connection.