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Troubleshooting Windows NAT issues

Case 1: Both NICs are using the same IP range. You must add both public (WAN) and private (LAN) interfaces to the NAT routing protocol.

Case 2: Both NIC are setup as Public interface.

Case 3: TCP/UDP port translation points to a wrong private IP address.

Case 4: The public address is pointing to the ISP router IP instead of the WAN IP address.

Case 5: After enable VPN, the inbound and outbound filter blocking all ports except VPN.

Case 6: Network address translation addressing is not enabled on the private interface.

Case 7: Network address translation name resolution is not enabled on the private interface.

Related Topics

Using Netsh command to troubleshoot NAT issue