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Routing inbound traffic with two NIC

Hello,

I have a Windows Server 2016 that serves as a firewall server. It has two Network Interface Controllers (NIC): an external and an internal. Unfortunately, the routing from the external to the internal adapter does not work - the other way round it does.

What could be the reason for this? I know it is a very general question. However, I could not find a proper answer yet. The NAT should actually be configured correctly in the RRAS. I have also configured a static route from the external to the internal NIC (or does it also work without)? The attempt with a network bridge was not successful, too. In principle, this can't be very complicated. So thank you for your feedback.

windows-platform-network
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Just want to confirm the current situations.

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Hi ,

For routing from the external to the internal, we always use VPN.

For port translation from the external to the internal , we always use NAT.

If you want to routing from the external to the internal, you can deploy VPN in RRAS.

Best Regards,

Candy


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