# Connect to Other Devices

You can connect from the production network to devices on the subnet of an EI Tunnel Manager unit by creating a port-forwarding configuration.

## Prerequisites

Obtain the IP address and the port of the device you want to access.

## Procedure

To create a new connection:

1. Open the Apps menu and select the Other Devices page of the Device Management app.

2. Click Add New, which opens the form where you can configure port forwarding for a device.

3. Fill in the required fields:

   Required Fields | Description
   Name | The unique name of the connection. The name can only contain lowercase and uppercase letters, numbers, spaces, periods, hyphens, and underscores.
   Destination Type | The type of access you want to configure for the device. Select an option from the dropdown menu: WebHMI: Adds a button on the Other Devices page that opens the WebHMI of the device. Remote Desktop: Adds a button on the Other Devices page that downloads an .rdp file for connecting remotely or copies the remote desktop address to the clipboard. Other: Adds a button to the Other Devices page that copies the IP address and port number of the device to the clipboard.
   Destination IP | The IP address of the device that you want to access. Ensure that each Destination IP and Destination Port combination is unique among your connections. Note: The Destination IP cannot be the IP address of the EI Tunnel Manager unit.
   Destination port | The port of the device that you want to access. You can use any of the valid ports of the device. If you do not know which port to use, consider the following examples: Port 80 for HTTP Port 443 for HTTPs Port 3389 for a remote desktop connection

4. Option: To configure a specific open port of the EI Tunnel Manager unit for port forwarding, fill out the External port field. You have to use a unique external port for each connection. The available range is 50000-59999.

   Note: If you leave the External port field empty, the EI Tunnel Manager unit automatically assigns a suitable port.

5. Click Save.