LAN can not connect directly with Internet

My family is able to use the LAN to connect to the Internet ..
but not always direct connection or no show
restricted, but can connect to the router, but
About What ah ..What is the solution you

router in a username and password! ! ! Of course you do not directly on it! ! ! Otherwise, you will not routing, switching, or HUB can be both ways, have the right to set ip gateway and dns, as well as connect to the router first started running ? ? ipconfig / all, to see ip, Gateway , DNS, and other information, the information recorded on the basis of these and then set up TCP / IP protocol.
Try, it is estimated that there are special reasons About.If it is a call to the telecommunications 10000, account number and password and ask, Netcom's customer service number to forget what has been, it seems to be 10,050, and then routing the Internet, download speed of a Star, after the installation of the routing out, account number and password is like landing a