Lan devices unreachable through RMS VPN / OpenVPN

NETWORKING SOLUTIONS
1

Hello,

I added an rut142 to an rms vpn hub, the problem is that I cannot reach the devices on the router’s lan with openvpn, I can reach the router itself via the vpn and not the devices, attached an example of a device that I cannot ping, locally it works but as soon as I activate the VPN it no longer works.
I tried to ping the device from the router with putty without openvpn it works and the same as soon as I activate it it no longer works.

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I have everything configured correctly I think in the router side (firewall and rules) and the rms vpn side.
Any solution pls ?

Best regards

2

In RMS, VPN hubs, Routes - make sure LAN access is enabled:

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3

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It is activated.

4

Okay, next:
Make sure that the source network (the one you’re coming from) is not 192.168.1.0/24 as well.

And instead of setting 2 routes with a 255.255.255.255 subnet each you can set one route 192.168.1.0 with 255.255.255.0 subnet.

5

what do you mean by the one i’m coming from, is it the Lan network where my devices are ? if yes it is at 192.168.1.0/24 and i can’t chage it.
I did an auto Scan for the routes and i can’t change the netmask, it takes automaticaly the value 255.255.255.255

6

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i noticed that with openvpn, this is the config of the clients , is it normal that the subnetmask is 255.255.255.252
is this normal while in rms I put this value ? :

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7

Well, if your own network, where your PC sits, is already 192.168.1.0/24, you cannot connect to another remote network (via OVPN, Wireguard, IPSec, etc.) using the same 192.168.1.0/24 subnet.
If you connect 2 networks, they always need to habe different subnets, e.g. 192.168.1.0/24 and 192.168.2.0/24.

Don’t do AutoScan in RMS, enter a manual route, e.g. 192.168.1.0 and subnet mask 255.255.255.0
AutoScan lets you only connect to one device, but you want to connect to the whole network behind the router, hence the manual route with /24.

8

Hello,

I tried to change the routes and I put only one as you told me 192.168.1.0/24 with this config I can no longer reach the router, I changed the subnet, it still doesn’t work .
The problem is that my PC as shown in the photo above appears on the router’s LAN network via ovpn with a subnet mask 255.255.255.252 whereas in rms > vpn hub > configuration I put 255.255.255.0, i can’t find explanations

10

Hello,

Could you please follow all the instructions step by step provided here and let me know if your LAN devices are still unreachable or if you have any success?

Best regards,

11

Hello,

Thank you very much, now it works except for one small point, I cannot
access the web server of a yaskawa MP3300 PLC and cannot communicate with it, when I ping it responds.

Best regards.

12

Hello,

Please ensure that the remote web server access function is enabled on the device you are trying to access, if it supports this feature.

Additionally, could you verify if your LAN device requires a gateway to be set? If so, it should be set to the RUT142’s LAN IP.

Best regards,

13

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