@Tony Connecting to the network of my ISP's modem/router, I am unable to access the NAS direct via IP address of NAS or via the IP address of Deco, along with the port of the NAS. seems like Deco is...

I’ve also tried to place my Deco in DMZ of my ISP’s device. Didn’t work too.

Tony wrote @Woosh What is the model of the device that is connected to the Deco LAN that gives it internet? @Tony It is connected to a modem-router provided by my ISP. It is running a AC1900 chipset....

I am unable to access my WD My Cloud outside of my Deco network. Locally, everything works ok. Didn't have this issue before I switched to using Deco. tried to forward 80/883 to 8080/8883/9080/9883....