@ukmartian Well, that's a matter of FW implementation and the document in questrion dates from 10-29-2019 - meanwhile it has been implemented on M4 as well I presume.

@ukmartian It's the former. Read the notes on the bottom of this guide.

@Bufkile It depends on the view point if they will be RX or TX - as you pointed they are RX only (because you don't use these ports). If you want to be sure that your router hasn't been compromised...

@Hometest If your modem/router is doing NAT then probably the issue is caused by the double NAT in your LAN (introduced when M5 is in router mode). Deco in AP mode: If when Deco M5 is in AP mode...

@Sheepie Yes, that's the culprit - see OneMesh FAQ - Q8/A8. If you have an ISP device before your AX1500 which could be set in bridge (modem only) mode and configure AX1500 in router mode, you should...

@Bufkile This could be some multicast traffic even if you don't use these LAN ports - I presume it's one way (RX only). If that's the case then it's normal.