Question about AT&T High Speed DSL Modem
If the internet light is red it indicates that there is an error with the username and password
Check the username and password provided by your ISP
If still unable to connect reset the modem and then reconfigure it with the username and password and choose PPPoE connection type.
If still no success contact AT&T tech support to reset the password
Posted on Feb 01, 2010
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Posted on Jan 02, 2017
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According to you security settings of your modem is difficult for you.
But you don't have say the OS you are using there. It depend on modem and OS. while installing the driver supported your OS select the PPPoa/PPPoE. After installing go to the web explorer and type the link (IP add) of your modem at the address bar and enter in the modem settings. Your modem vendor will provide this IP or see the manual.
Then go to the security settings and set it pasword protected. Enable the NAT (Network Address Translation)with your Private IP address for security. You can follow the manual to set it properly
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