Hello,
About two weeks ago, I upgraded my U-Verse Internet/DSL account to include static IP because I recently bought a NAT that I wanted to access at home when I was at home. Ever since getting the new Public Subnet IP (different than the original Private LAN subnet on the NVG510), it seems like some computers connect to the Private LAN, and some of the computers connect to the Public, which creates problems because it basically creates two different networks and doesn't allow some computers to access the internet (at times). I've been trying to get ahold of someone at AT&T for the past week, but it takes about an hour just to get transfered to the correct department and then I'm usually stuck on hold or disconnected for no apparent reason. Here is how my NVG510 is setup;
Subnets & DHCP
Private LAN Subnet
Device IPv4 Address - 192.168.1.254
Subnet Mask - 255.255.255.0
DHCPv4 Start Address - 192.168.1.64
DHCPv4 End Address - 192.168.1.253
Public Subnet
Public Subnet Enable - On
Public IPv4 Address - 108.241.245.158
Public Subnet Mask - 255.255.255.248
DHCPv4 Start Address - 108.241.245.153
DHCPv4 End Address - 108.241.245.157
Primary DHCP Pool - Public
Now, my NAT works great when I'm at home and I'm able to access it using one of the public IP ports, but when I'm at the office, usually at least 1 or 2 of the computers has a problem consistently connecting to the right network. Help? 
theclash4u5 wrote:
Hello,
About two weeks ago, I upgraded my U-Verse Internet/DSL account to include static IP because I recently bought a NAT that I wanted to access at home when I was at home. Ever since getting the new Public Subnet IP (different than the original Private LAN subnet on the NVG510), it seems like some computers connect to the Private LAN, and some of the computers connect to the Public, which creates problems because it basically creates two different networks and doesn't allow some computers to access the internet (at times). I've been trying to get ahold of someone at AT&T for the past week, but it takes about an hour just to get transfered to the correct department and then I'm usually stuck on hold or disconnected for no apparent reason. Here is how my NVG510 is setup;
Subnets & DHCP
Private LAN Subnet
Device IPv4 Address - 192.168.1.254
Subnet Mask - 255.255.255.0
DHCPv4 Start Address - 192.168.1.64
DHCPv4 End Address - 192.168.1.253
Public Subnet
Public Subnet Enable - On
Public IPv4 Address - 108.241.245.158
Public Subnet Mask - 255.255.255.248
DHCPv4 Start Address - 108.241.245.153
DHCPv4 End Address - 108.241.245.157
Primary DHCP Pool - Public
Now, my NAT works great when I'm at home and I'm able to access it using one of the public IP ports, but when I'm at the office, usually at least 1 or 2 of the computers has a problem consistently connecting to the right network. Help?
The above two highlighted phrases make absolutely no sense whatsoever.
You don't "buy" a "NAT". I have no idea what you even are trying to say with that. NAT is a function of a router that translates private IP addresses to public IP addresses.
You don't "access" a NAT, that makes no sense either. And your computer's configuration or connectivity at the office has absolutely nothing whatsoever to do with your home network's configuration.
Back up a minute. What exactly is it that you're trying to accomplish? What are you trying to DO? Let's get that clear first before we discuss any networking configuration.
