v7.2.7.15 Firmware on RBR 850. Can someone run GRC.com Shields Up

So I go a bit of information back regarding this. Seems that this is expected behavior seen at the port test site. Since Protection Engine seems to be a hidden feature in Orbi FW, this is actively preventing nefarious scans from intruding into the system. Thus will change the port behavior from stealth to close. Seems that protection engine identifies the port scan behavior as potentially risky and rejects the traffic to prevent possible attacks from internet from RST packets. 

I happend to test this out on a Nighthawk router that has this feature and is user changeable to enable or disable PE. With PE enabled ports showed as closed and thus the test fails. Disabling PE, the port all then showed as stealth and the test passes. 

Unfortunately there is no user changeable item on Orbi AX/AXE and BE systems to disable PE and I presume form NG intentions, means to leave this running the background as a added security layer for there systems. Older Orbi AC systems never imployed PE so those will report all stealth and thus will pass at GRC. 

So Orbi AX/AXE and BE users will just need to be aware of this feature and the results seen with the port test site at GRC. This systems are safe and working as intended from what I understand.