Hello guys, I have not been here in awhile but I hope there's someone out there that can help shed some light on the issue I am having. Hopefully someone can suggest a fix and it'll all work, or at least point me in the right direction, and possibly explain anything I may be overlooking or misunderstanding. I have a basic understanding of networking, so I can work my way around my routers and modem etc. To start, a small introductory of my issue, as you can see from the title, I have an issue getting Open NAT for my PS4 and Xbox One, I have 2 firewalls to go through, my network setup is as follows: Modem > Router1(Router2/Router3 Bridged) > Device However. I have 2 other Routers in the house that are bridged to extend/strengthen signal in different parts of the house. I have opened the suggested ports for Xbox One (53, 80, 88, 500, 3074, 4500) on both my Modem (ZyXel P-660R-F1) and my Router (TL-WR1043ND), I have not configured any special settings on the 2 bridged routers, the PS4 connects by wire, Xbox one by wireless (same floor as the main Router) I have followed guides on setting both of them up (First on Portforward.com, then found a video for my ZyXel modem and it suggested to disable the Active Firewall, and Bypass Triangle Route. Also to change the NAT SUA Only changed to 1024 (it was 512). Lastly, it suggested to turn off the Enable SIP ALG setting). For my router, some suggested to just let UPnP do it's job and disable the Port Forwards (Virtual Servers it's called in the settings) I have tried with just UPnP and with Port Fowards, neither make a difference. I even disabled the Port Fowards on the Modem and had UPnP on both, but to no avail.To clarify something, if I use Port Fowarding should I have UPnP off? OR will they work in together? I have done restarts on all devices (router/modem/Xbox One) when any changes have been made. On my XBO I have turned it to "Energy Saving" mode as I have read in several places that it can effect UPnP negatively if it is in "Instant On" mode. I have tried to set the Reserved Address in my Router for my XBO, as another site/video said that having a Static IP set on the XBO can cause problems, I have tried the static IP set through the XBO and through the router, neither makes a difference. On my Router I have several firewall settings that are not mentioned by any guides as to if they should be altered, the settings allow me to Disable or Enable (All currently enabled): Firewall: SPI Firewall VPN: PPTP Passthrough, L2TP Passthrough, IPSec Passthrough ALG: FTP ALG, TFTP ALG, H323 ALG, RTSP ALG I also tried to set up Port Triggering to see if that would help, and set the protocol to ALL for all of them (originally set them up to the proper TCP/UDP but it wasn't working so I changed it to ALL) But that did not work either. I am not sure if I am missing any other information, feel free to ask for anything I am missing. My LAN address for my Modem and Router are different (eg. 192.168.2.1 Modem and 192.168.1.1 for my Router) Will this effect how NAT works or cause my issues? Thank you. P.S I know I have not added any troubleshooting for the PS4, I do not own it and I want to get one device working before I start fiddling with the next.