John Hasler wrote:
If the modem provides straight ethernet (no pppoe or other specialities required), then the docs that come with your modem will usually tell you what ip-address the modem will have.Andrei writes:There are modems that also do the pppoe part.This is true. Those ones also usually also handle NAT and DHCP. They are often "plug and play" with any operating system (except for entering the username and password the ISP gave you via the Web server in the modem). The "driver" AT&T wants you to install is just full of crapware that they want on your computer.
Plug everything in per the instructions, enable the interface with dhcp and browse to said address. If the docs say nothing, watch the output from your dhcp client to find the ip of the modem.