RUT906 Static Route or VPN

Networking Solutions
1

Dear Experts,
I am trying to create a network between 2 RUT906 devices with firmware version RUT9M_R_00.07.18.3 according to the attached architecture.
My simple architecture is as follows:

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  1. What do we need to do to connect the PLC device to the Scada device B?
  2. Also, what do we need to do to connect from Device 2’s WAN IP address to the SCADA device connected to Device 1?
3

Hi…

Are you using a VPN, like IPSEC/ZeroTier or ???

Because… You cannot have the same lan ip address of each side of the VPN!

Can you split the each side of the network, changing only the netmask?

4

Greetings,

Could you please clarify the purpose of the LAN cable between the routers? Are the routers connected LAN-to-LAN or WAN-to-WAN?

Also, is a mobile connection being used in this setup?

Best Regards,
Justinas

5

Greetings,

The purpose of the LAN cable between the routers is:
1- To allow Device 2 to access the device connected to Device 1.
2- To allow Device 1 to access the device connected to Device 2.
Currently, the cable is connected as LAN to LAN. Since both devices have mobile connectivity, I couldn’t connect them as WAN to WAN.
I think we can solve this using a VPN connection without the cable, but how can we do it without a VPN connection?

Each router has its own mobile connectivity.

Best Regards,
Mustafa

6

Hello,

  1. Both routers are in identical subnets, and routing will not function properly:
  • Use 172.62.147.x for the RUT906 Device 1 (change the SCADA accordingly if it’s not on DHCP, same with the gateway IP addresses)
  • Use 172.62.148.x for the RUT906 Device 2 (change the PLC accordingly if it’s not on DHCP, same with the gateway IP addresses)
    2.Add a Static route under Network → Routing → Static Routes on the RUT906 Device 1:
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  1. Add a Static route under Network → Routing → Static Routes on the RUT906 Device 2:
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Port forwarding would usually do the trick: Port Forward: Accessing LAN devices - Teltonika Networks Wiki

Regards,
M.

7

Hello,

My current simplified architecture is as follows:

teltonika
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  1. What do we need to do to connect the PLC device to the Scada device B?

  2. Also, what do we need to do to connect from Device 2’s WAN IP address to the SCADA device connected to Device 1?

8

Greetings,

Please refer to @Matas reply, he provided the required static routes for this setup. One important note: on Device 2, the gateway should be 172.62.147.130, as this is the LAN IP address configured on your router.

You’ll need to configure a port forwarding rule on Device 2:

Go to Network → Firewall → Port Forwards and create a rule similar to the one shown in the pictures below.
The external port can be any unused port (not occupied by other services).
The internal port should match the port used by the device you want to reach.

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In my example, the device would be accessible via WAN_IP:8080

If this still doesn’t work, navigate to Network → Firewall → Zones and enable Masquerading for the LAN zone. This ensures the return traffic is routed correctly back through Device 2

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Best Regards,
Justinas