Network Configuration Help

Installing and Using OpenWrt
1

Hello all. This is my first time here. I previously used primarily DDWRT. I have an unique application. I build industrial machines and use simple low cost routers on our manufacturing floor to connect from our internal network to the machine network. I use them as both a NAT device and a PPTP VPN. So that from dev machines a connection can be made on the local network. I recently purchased the GL-MT3000 router after using TL-MR3020 routers for 12years or so. Here is the configuration I am gunning for but I don't understand exactly how to tie this all together as far as what settings need to be set. I am using PPTP because of the simple setup in windows and since it is only internal the security is not a concern.

WAN (Intranet of Org)
LAN (Machine Network)
Radio0 (Wireless Connection to WAN as Client)
Eth0 (Bridge WAN for direct WAN connection through Radio0)
Eth1 (LAN Connection)
NAT 1:1 LAN to WAN for 2 IP Addresses
VPN PPTP

2

Do you need 2 WAN-s as backup?

3

Strongly reconsider if it really must be PPTP - or if something modern and actually secure (wireguard!) wouldn't to the same job, better.

1 Like
4

pptp and gre are standard… one does not have an hour to fix the network…

1 Like
5

This is din mountable, somewhat dust/humidity proof, significantly cheaper than industrial raspberry….. Not all support OpenWrt

6

No. It is just to allow for a wan side connection at the machine.

7

Security is not a concern here. These devices are not accessible from outside our internal network.

8

Not needed for this application. They are temporary for setup and testing prior to machine shipment.

9

To be clear this device is routing from our internal network to a machine network without the internet. No connection to the internet is made with these devices. They are used temporarily for setup and testing.

10

It is all possible.

What is 1:1 nat? Like M:N or no nat ie bridge?

11

I think, 192.168.1.1 network for LAN.

Yes, it is all possible. I recommend to use OpenVPN, it has standard application in Windows, and could be configured on router.