I've searched for like an hour and I can't find the solution to my problem so I'm making a post. It's probably something super simple that I'm overlooking.
I have a Buffalo Terastation 1400R in my server cabinet. It has a static IP, and a domain name. It's working perfectly fine, and all of the data is there, and all the NFS shares are still working, but for some reason I can no longer access the web interface through my home router. Oddly enough I can access it through my cell phone as long as it isn't connected to my home router's wifi though. The same cell phone refuses to connect if it's going through the home router. I've tried on multiple computers and multiple browsers within the home router network. It always gives xx.xx.xx.xx refused to connect in the browser. I've opened a command prompt on the same computer within the home router network and ran the command
telnet xx.xx.xx.xx 80
and it works, and I can see it gets data from the NAS on port 80. That means it's not blocked in a firewall, or blocked by my ISP, or anything. It's also odd because it used to work just fine from my home internet connection. I think it may have been a firmware update on the NAS is when it stopped working. At the time I assumed the NAS just needed a reboot because the web access wasn't working, but all the NFS shares were still working. I finally got around to rebooting it yesterday and the web access still doesn't work.
Any ideas of what to try next?