Forwarded port shows as "Stealth" in GRC Port checker

[sitloongs]

You can also using Packet capture tools to check on this.

PLC HMI VNC Access

@Scorless The easier way to troubleshoot this is to perform packet capture at the BR1 Mini and open the captured results using Wireshark to check whether the traffics is port forwarded or NAT Mapping. You can do this via the support.cgi. [image] If you found the traffics is not mapped correctly, please open a support ticket for support team to check.