So here is a knowledge-base article for Google to pickup.
I recently converted by Residential Gateway to DMZPlus. I have a Linux box I use for my DHCP, DNS and Firewall. I placed all my Set-tops directly attached to the residential gateway (RG), and all my PCs behind my linux box.
RG —- Linux Firewall —- PC & Laptops
|—— Set-top(s)
U-Verse has a “feature” where-by if a device on the network has too many connections it will tell the other computers on the network (assuming that PC in question is infected with a virus). Well, my Linux Box has a lot of PCs behind it. So it generates a lot of connections. In fact, its the only PC on my network that anyone can see messages.
So my Linux Firewall triggers the thresholds. All my other devices on the DMZ get HTTP redirects. HTTP is the transport the set-tops use to load their firmware. I don’t get any notice of this.
Moral of the story – if you’re using DMZPlus, and your set-tops die at the “Hello
Welcome to U-Verse
Loading…..”
Eventually it times out to say “Client Initialization Error…”
You should attempt to get a device connected directly to the U-Verse RG, and attempt to pull up google. You’ll get a notice and then you can white list the DMZ plus computer/router.