How can enterprise network administrators shield portable wifi, shield wifi sharing wizards, and prohibit LAN computers from using portable wifi?
At present, in the enterprise LAN, a new way of wireless Internet access is being quietly popularized, that is, portable wifi and wifi sharing wizards. The portable wifi product is a wireless wifi chip (sim card) provided by the wireless carrier to form a mobile wifi receiving and transmitting signal source. Through this device, it can be connected to a 2.5G, 3G or 4G network to form a mobile device. The wifi hotspot can convert the wired network access to the wireless signal, which is convenient for providing Internet access for your mobile phone and tablet. The principle of the wifi sharing wizard is similar to that of the portable wifi, but it is based on a pure software method to form a wireless hotspot. So you can provide Internet access for your mobile device. Therefore, compared to portable wifi, the wifi sharing wizard is lighter and more convenient.
However, in the company's local area network, employees use software such as portable wifi and wifi sharing wizards, which usually provide wireless Internet access for their mobile phones and tablets, and usually have nothing to do with the employees themselves. Employees accessing the Internet via mobile phones are also mainly dealing with personal activities, online entertainment, downloading things or playing games. These non-work related Internet access methods and online behaviors occupy the company's network bandwidth resources, causing the company's network speed to slow down and network performance to decline. On the other hand, it also takes up employees' working hours and reduces work efficiency, which is not conducive to The company is functioning normally. Therefore, the company LAN must disable portable wifi, prohibit wifi sharing wizards, and restrict wifi sharing Internet access.
So, how can enterprise network administrators shield portable wifi, shield wifi sharing wizards, and prohibit LAN computers from using portable wifi? The author thinks that it can be realized in the following ways:
Method 1. Disable the wifi service by using the ICS service mode, and shield the portable wifi
Because the wireless network card AP function is used by the portable WIFI And the common wireless network card AP function, basically use ICS. Therefore, by disabling the ICS service of the operating system, the purpose of disabling the use of the portable wif can also be achieved.
ICS stands for Internet Connection Sharing (Internet Connection Sharing), is an Internet Windows system for home or small network of Intranet network offers connection sharing services. From a functional point of view, ICS can be seen as a subset of NAT, and ICS and NAT cannot be used simultaneously.
We opened Windows services", found Internet Conection Sharing (ICS), found that the service has been turned on, then we double clicked, click “stop”, then select “manual” or “ disable & rdquo ;, as shown below:
FIG: disable ICS service 360 portable WIFI FIG abnormal
: 360 Unable to carry wifi connection
verification ICS At this time, close the "ICS" service, you will find that 360 portable WIFI can not provide WIFI service.
The main function of the wifi sharing wizard is wifi network sharing, which is essentially the wireless network sharing function of Windows system. The wifi sharing wizard simplifies and carries forward this function. As the saying goes, it is to convert the wired network. Into a wireless network, the principle is similar to wireless routing. Therefore, the method of prohibiting wifi sharing can be implemented by disabling the wireless network sharing function of the operating system, which is essentially to disable the wireless network card, and the most thorough method of disabling the wireless network card is to disable the wireless network card through the BIOS. As shown below:
1, press F2 (or DEL) to enter the BIOS interface, switch to the “Configuration” window, find “Wireless LAN Support”, and “Wireless LAN Support” ; set to “Disabled”, then press F10, enter the letter Y, press Enter. The operation method is as shown in Figure 3.
Figure BIOS to disable the wireless card method
The second method to disable the screen through a special USB interface software portable wifi use, prevent the use of portable wifi
Because the portable wifi device must be transmitted via the USB interface, shielding the portable wifi can also be achieved by disabling the USB interface. However, since computers often use USB devices such as U disk, U shield or USB interface printers, it is not possible to completely disable the use of portable wifi by means of the BIOS shielding the USB port, which will also result in U disk, U shield and USB printers, even USB keyboards and keyboards cannot be used. Therefore, it is necessary to decide whether to disable the USB interface by means of software that can accurately identify the USB device.
For example, there is currently a "national trend to USB port management software" (download address: http://www.grablan.com/monitorusb.html), which will be monitored in real time after installation on the computer. The use of the USB interface, once found to be connected to the portable wifi device, can be immediately disabled, which can completely prohibit the use of portable wifi; and the insertion of USB mouse and keyboard, dongle, printer and other devices are not affected; you can also take advantage of the trend To the USB interface software to prohibit the use of U disk, shield USB storage devices, so as to protect computer confidential information, to prevent the transfer of computer files, commercial secrets to the U disk, thus causing losses to the enterprise. & Ldquo; Mahasthamaprapta disable USB software & rdquo; the use of very simple, straightforward check & ldquo; disable portable wifi & rdquo; to take effect, you can disable the use of all current mainstream portable wifi in real time, as shown below:
Figure: The trend to the USB port monitoring software disables the portable wifi
and for the "wifi sharing wizard" software, because its operation must rely on the wireless network card, you can disable the wifi by disabling the wireless network card The use of the shared sprite. As shown below:
Figure: Mahasthamaprapta Disable USB software disables wireless card
At the same time, if you do not want to disable the wireless network card, then you can also & ldquo; The general trend to disable the USB software & rdquo; prohibit the open program's function to achieve the prohibition of computer installation "wifi sharing wizard", as shown above, click "set the prohibition program list", then you can Adding a wifi sharing wizard is not allowed here, as shown below:
Figure: Forbidden to install wifi sharing wizard
You can completely disable any wifi sharing tool software by prohibiting the installation of the program. It does not affect the use of the wireless network card, so that the use of the wifi sharing wizard, the prohibition of the wifi hotspot, and the blocking of the wifi sharing can be completely realized, thereby avoiding improper network expansion and protecting the network security.
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