Shared Internet access through Windows 7

To share multiple machines with China Netcom, there are two methods. One is to share the Internet through a router, and the other is to share the Internet through a soft gateway. In some cases, for example, to use a 3G or 4G wireless network card to share the Internet, we need a special 3G or 4G wireless router to share the Internet. Without such a router, we can only share the Internet through software. Windows 7 provides such a sharing function, and the configuration is very simple. Next I will write down how to configure Internet sharing in the office for your reference.

Before starting this article, I will first introduce my network environment.

There is a desktop computer in the office, and the operating system is windows 7 professional 64bit. Use a 4G wireless network adapter to access the Internet at a speed of 20 Mbps (downstream)/16 Mbps (upstream ). A wireless router, several office computers and network printers. There is no wired Internet connection. In fact, the general ADSL2 + downlink speed can only reach 10 Mbps here, it is not as fast as 4G wireless network card. Note: It seems that 4G wireless networks have not yet been activated in mainland China, but it doesn't matter. Computers can be shared as long as they can access the Internet.

My goal is to allow all devices to access the internet through a 4G wireless network card.

First, we should consider using vrouters for sharing. However, since the 4G wireless network was just activated in Australia for a month and there was no corresponding wireless router, we found a 3G wireless vronetnetcomm n0000002w. As shown in:

After testing, 4G wireless NICs are not supported, but 3G wireless NICs are too slow to access the Internet.

Since you cannot share the Internet through a vro, you can only share the Internet through a soft gateway. At first, I did not know that windows 7 had similar features. I found two soft gateways on the Internet, one of which is WinRoute. This software is charged at $399, in addition, the website description does not support windows 7. another one is AnyRouter. This software has a free version, but the interface is Chinese (only I can understand Chinese in the company), and it does not seem to support windows 7 from the website description. It seems that none of them meets my requirements. Google. It doesn't matter if you search for windows 7, but you find that windows 7 comes with the internet share function called ICS (Internet Connection Sharing ). See Using ICS (Internet Connection Sharing)

The following describes the setup steps.

First, choose Control Panel> Network and Internet> Network and Sharing Center, as shown in figure

There is a network adapter for Telstra Mobile. This is the network adapter for the 4G wireless network adapter I mentioned earlier. The desktop is connected to the Internet through the wireless network adapter. Click the blue link in the circle and click Properites (the Chinese system should be an attribute ). Go to the network adapter properties configuration.

In attribute settings, select the second tab-> Sharing (SHARE) and select the red circle. There is a Home networking connection to be selected. This setting indicates which network adapter is used for sharing. In general, we share data through a local Ethernet NIC. Here I select a network adapter for the local network.

After clicking OK, a prompt is displayed, indicating that the IP address of the local network adapter will be forcibly changed to 192.168.137.1. This is because a soft gateway requires a fixed IP address, in windows 7, the address is fixed to 192.168.137.1. Click OK. The setting is complete.

The following is how to configure a vro.

The connection method of the router is to connect the LAN port of the router to the local Nic of the desktop on windows 7. You may also be able to connect to the WAN port and configure it as cascade, but I have not tried it.

The router configuration method is as follows:

First, set the IP segment of the vro to 192.168.20..* (you can also use cascade) and change the local IP address of the vro to 192.168.137.2.

Then configure the gateway and DNS address, both of which are set to 192.168.137.1, that is, the soft gateway pointing to windows 7, as shown in:

Some routers also need to manually set the DHCP address range, for example, to 192.168.137.100-192.168.137.254.

After the configuration, restart the vro.

Open my laptop and connect to the wireless router with a wireless network card to automatically obtain the IP address. After testing, you can access the internet normally. Now the configuration is complete.