ADSL is a relatively affordable broadband access solution today, and its billing is generally based on monthly payments. If a user uses one account to access the Internet, it will inevitably be a bit unprofitable. How to achieve multiple users accessing the Internet with one ADSL? Let’s share experiences below.
Sharing principle
Given that the mainstream external ADSL Modem of the Ethernet interface currently has built-in routers and has routing functions; it also has a built-in ROM chip (including PPP dialer program). With this built-in dialing program, the Modem can automatically enter the dialing program after power is turned on. Just write the username and dialing password assigned by the ISP to the ADSL's built-in ROM chip and let it save the username and password, and ADSL Modem can automatically enter dialing. With the help of built-in routing function, data packet exchange between the Internet and the LAN can be easily completed, and multiple machines can be shared with the Internet.
Step 1: Implement ADSL Modem automatic dialing
First find the internal IP address of your ADSL Modem, such as 10.0.0.2 (introduced in your ADSL manual), set the network card connected to the modem to the IP address of the same network segment, such as 10.0.0.3, etc., and set the gateway address to 10.0.0.2. Directly enter "http://10.0.0.2" in the browser address bar to enter the modem setting interface. A dialog box will pop up prompting you to enter the login username and password (usually, the username is admin, the password is 123456, please refer to the instructions for details). If the password is incorrect, it means that someone has modified the password in advance. But it doesn't matter. There is usually a "Reset" reset switch on the Modem. Press this switch to restore this information to the factory state.
The pop-up window is divided into 2 parts, the main column on the left is the main column and the specific settings for each column on the right are. Click "LAN" on the left side of the window, read the IP address (IP Address) and subnet mask (Subnet Mask), and record these two data. This is the gateway and mask of the LAN. At the same time, set the DHCP service to "System Allocated". In addition, the "User Mode" item must be set to "Multi User", otherwise broadband sharing will not be possible. After the settings are completed, click "Submit" to submit the data.
Click "WAN" on the left side of the window to enter the "WAN Configuration" settings dialog box. This is the most critical step in the entire operation. Here, we need to change the PPP transmission mode "ENCAPSULATION" to "PPPoE LLC", and write the username and password Password given by the ISP. After setting the settings, click "Submit" to submit.
Click "DNS" on the left side of the window to set up the domain name resolution server. My NS-201LAN is able to automatically get the DNS of the ISP, so there is no need to set it up. If Modem cannot be automatically retrieved, you can click the "SYSTEM LOG" option in the left window to view this information, or you can directly ask your ISP.
Click "Save Settings" on the left side of the window to enter the save configuration window. Click "Submit" to submit the above information (remember to submit and save each step above, and you must not turn off the power at this time), and write the above settings to the ROM of the modem - restart the modem. Turn on the ADSL power and computer in sequence and try it. Without dialing, the computer has been automatically connected to the Internet!
The above implementation process varies in different ADSL Modem. Please refer to the ADSL Modem user manual for details.
Step 2: Connect and set up the LAN
The steps for setting up a LAN will not be described in detail here. After the local area network is connected, first close the ADSL Modem, and then connect the ADSL output to the HUB first. Remember that the connection to the HUB is not an input port, but a port parallel to any computer. Each computer network cable connects to the port parallel to the modem, and then change the TCP/IP attribute to automatically obtain IP in the properties of the network neighbors. Turn on the power supply of ADSL modem, turn on the power, and the entire LAN can access the Internet.
According to the above sharing settings, we only need to turn on the ADSL Modem and Hub power supply all the time, and anyone who wants to turn on the Internet can go on. Is this a cost-effective solution? This method is suitable for multiple users in a family or shared Internet access on one floor. It is both economical and fast, and is also very convenient. How about it? Try it. (Note: This method is not suitable for limited-time users and traffic billing users)