At our country some ISP don't tell their PPoE Username and Password. Normal condition we don't need but sometime we need to replace old modem with new, how? Bring the new modem to ISP and pay the charge. Problem is I don't want to pay about that. So I search the way to view that password. Answer is easy, you need to open your device wan setting page and right click select save page as.open with Notepad++ and find the username and password will be see like this. Sometime you don't see like this you will see only username and password it depend your devices. Because your device keep that password. PS: You need to know device password. In this cause I lucky, my device is default password. :D