Access Internet from behind the eWON-Talk2M

I have an eWON4005 connected on Talk2M through the Ethernet WAN on the Customer Network.
I have an engineer with his "Service Laptop" on site and connected on the eWON4005-LAN.

Is there a way for the engineer to go on Internet (beside the Talk2M-VPN tunnel)?

Yes. This is possible.

1) You must make sure you have full Internet access available.  The Internet requests to and from the service laptop will not travel through the VPN tunnel.  As a result, if your network has a strict firewall that prevents traffic outside the VPN tunnel, you will need to work with your IT manager.

2) You need to activate the NAT feature on the eWON.
Open the Routing setup page (System Setup/ Communication/ Networking config/ Routing)

- Uncheck the "Route all gateway traffic through VPN"
- For the 'Apply Nat and TF to connection' field choose "NAT and TF on WAN"
- Leave the "Enable transparent forwarding" option unchecked.

3)  You need to allow traffic forwarding.  Open the Security setup page (System Setup/ Communication/ Networking config/ Security)

 -Check the box to allow traffic forwarding.

4) If a WAN connection has already been established, you will need to trigger a new connection for these changes to take effect.  The easiest way to do this is to reboot the eWON.  To reboot the eWON without cycling power, go to Configuration / System Setup / General / General / Reboot.

5) The service laptop must have the eWON's LAN IP address as its gateway address.  In addition, the service laptop must have a valid DNS server specified.  The DNS server can either be the DNS server you specified when you configured your eWON's WAN settings or can be a public DNS server.

6) Since your NAT and TF settings are now set to "NAT and TF on WAN" you will need to make sure that all ethernet devices on the eWON's LAN network have the eWON's LAN IP address as their gateway address.  If you do not take this step, you will not be able to reach those devices through your VPN connection.