6 VPN pass-through

== 1 VPN pass-through ==

**Functional overview**：VPN pass-through is to add PC to the Local Area Network where the device is located. It can be imagined that PC "replaces" the device at this time, and PC can access any PLC in this Local Area Network where the device is located.

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[[image:介绍.png]]

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**~ Device list**

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* Display all support VPN pass-through devices under current account

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Right-click menu, search box is consistent with PLC pass-through

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**~ Remote LAN IP**

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VPN pass-through required parameters, DHCP/Static IP of pass-through IP

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**~ Device information**

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Display device machine code, name, device status and other information

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**Start pass-through/End pass-through**

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* Click Start pass-through, proceed VPN pass-through according to the setting LAN pass-through IP

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* Click End pass-through to end VPN pass-through

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* When the device is offline, the Start pass-through button cannot be clicked

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* When the firmware version of the device is too low, the Start pass-through button cannot be clicked

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* The current account does not have the permission of pass-through to this device or the device is shared by others, the Start pass-through button cannot be clicked

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* When the current account has a device being pass-through, the Start pass-through button cannot be clicked

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After clicking the Start pass-through button, the pass-through is successful, the button changes to End pass-through, and the device status color on the left side changes to yellow

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✎Note: The WVPN connection only lasting for 2 hours after user connect successfully, suggest to close the connection manually after done the debugging.

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**Refresh**

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Right-click in the blank area of the device list to pop up the global operation menu.

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Right-click menu to select "Refresh" or use shortcut key "F5" to refresh the status.

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**Status type**

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There are 5 status of device in the Wecon VPN pass-through tool.

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* Offline(Gray): Pass-through cannot be performed.

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* Online(Green): Pass-through can be performed.

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* Being in VPN pass-through(Yellow): In the status of VPN pass-through.

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* Reconnecting VPN pass-through(Red): Due to network or other reasons, VPN pass-through is reconnecting.

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* Ending VPN pass-through(Blue): VPN pass-through is ending.

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**How to choose the pass-through IP of the PC.**

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For PLC and PC LANs using the different network segment.

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* The PLC is directly connected to the V-BOX, and all IPs that are not used by the PLC can be used in the network segment where the PLC is located.

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* The PLC and V-BOX are connected through a router or switch, and all free IPs not used by the PLC and other devices on the network where the PLC is located can be used in the network segment where the PLC is located.

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For PLC and PC LANs using the same network segment.

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* The PLC is directly connected to the V-BOX and all free IPs not used by the PLC and other devices on the network where the PLC is located can be used within the network segment where the PLC is located.

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* The PLC and V-BOX are connected through a router or switch, and all free IPs in the network segment where the PLC is located that are not used by the PLC, other devices on the network where the PLC is located, and other devices on the network where the PC is located can be used.

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**✎Note:** If the selected IP address is occupied, the pass-through function will be failed.

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== **2 **Two modes of Pass-through ==

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* **DHCP**: Enables the computer to randomly generate an Ethernet IP. The generated IP segment is determined by the Ethernet configuration of the V-BOX.

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[[image:动态IP.png||alt="动态穿透.png"]]

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✎Note: If the V-BOX is not configured with an Ethernet IP, dynamic mode of the VPN cannot be used！

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**Static IP**：Customize the generated IP address. static mode does not require setting up Ethernet configuration.

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[[image:静态IP.png||alt="静态穿透.png"]]

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= **3 The networking methods supported by VPN** =

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[[image:联网方式.png]]

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=== **（1）Configure Ethernet networking：DHCP** ===

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[[image:动态联网.png]]

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This is the IP assigned to the Box by the Ethernet. The network segment of the Ethernet IP address, which determines the network segment after using the DHCP VPN pass-through.

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[[image:分配的动态IP.png]]

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At that time using VPN Pass-through：

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VPN DCHP：After the Pass-through is complete a random IP will be generated for the 39 network segment, for example 192.168.39.XXX

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Static IP: please customize the generated IP address.

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=== **（2）Configure Ethernet networking：Static IP** ===

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[[image:静态联网.png]]

✎Note: When using a static IP to connect cloud, you need to set the configure the Preferred DNS Server and Altermate DNS Server. If you are using connecting by other methods, you do not need to configure the Preferred DNS Server and Altermate DNS Server.

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At that time using VPN Pass-through：

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VPN DCHP：After the Pass-through is complete a random IP will be generated for the **39** network segment, for example 192.168.**39**.XXX

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