All of this is on a home network. I have a laptop on WiFi with an allocated IP address 192.168.1.71 Router/Modem is standard AT&T Arris NV510 with an IP of 192.168.1.254 I have a local server (ethernet) in my office with an IP of 192.168.4.12 In between the Server and the Laptop is a Router/Firewall with an interface of 192.168.4.1 I am trying to connect to the server (on ethernet - 192.168.4.12) from the WiFi laptop on 192.168.1.71. I've set up packet filters on the AT&T Router that clears access to the Server from the laptop. Nothing I've done seems to work. So far, the Laptop doesn't seem to be getting past the AT&T Router/Modem. Do I need a NAT rule in the AT&T router? Such as 192.168.1.71 --->> 192.168.4.1 ?