I am using an AC86U running the latest Merlin on it. So after trying on and off for the past year, I am unable to get port forwarding to work. No matter what I do the port 555xx will not open. My only recourse is to use DMZ, but this opens all the ports. I have also tried using UPnP, which also doesn't work. I am trying to have access to my NAS from the internet. I am about to start pulling out all my hair. If it was just me accessing the NAS I would set up a VPN, but I need to have client access. Anyone have any suggestions?