Hi
How can i enable NAT Loopback on OPNSense?
Mine works and allows me to access my internal servers via their public IP. All I did was setup a port-forward under Firewall > NAT > Port Forward. I think the key is to enable NAT reflection in the NAT rule.
Interface:WAN
Destination: Public IP (I have a /28 block so I created aliases, but you could choose WAN Address)
Destination Port: HTTPs, etc.
Redirect target IP: Alias of server's internal IP
Redirect target port: Same as dest (change if you want port translation applied)
NAT reflection: enabled