SoftEther VPN User Forum

We've added an additional network card in our server to communicate with another network. However when it's enable, VPN users can't access network resources.

Windows Server 2019
There is no local bridge setup.
The main network card is at 192.168.200.6
The new network card is at 192.168.1.150

We do have secureNat enabled with this static routic:
192.168.200.0/255.255.255.0/192.168.30.1

I suspect softether is trying to send traffic over the new nic, but I'm not sure how to bind it to only the main network card. Any suggestions?

Two suggestions.
1. SecureNAT sends traffic according to the system routing table. You need to make sure it's correct.
2. Use Wireshark to find the problem and prove your hypothesis.