network metropcs use

###第一次的解决方法： 1、我一般过一段时间就会对虚拟机进行拍快照备份；在使用过程中，如果没有太大变化，恢复网络正常的快照一般是能解决问题的，但是要记得恢复快照之前要备份你已经修改过的所有东西，以防丢失文件等；这种方法一点也不推荐，但是确实没办法还是可以用的。###第二次，也就是今天，再次遇到，真的很累人。由于我上次恢复快照丢失的文件有点多，于是我不打算继续使用。百度看了很多答案，也都是上次测试过的，跟我的错误日志对不上。果断放弃。最后找到一个： 是由系统自带网络管理器（NetworkManager）的原因造成的 具体解决方案： 1） 关闭网络管理的服务： systemctl stop networkManager.service； 2）停止服务： systemctl diabled networkManager.service； 3）重启网络服务： systemctl start network.service;我写的没有这个作者写的详细，附上链接： http://blog.51cto.co

to the security of the local machine, but a threat to the security of other computers on the network. Installation of network data collection and analysis tool TcpDump In linux, the installation of tcpdump is very simple. Generally, there are two installation methods. An rpm Package is used for installation. In addition, it is installed in the form of a source program. Rpm Package installation: the simpl

If there is no wireless router, a laptop with a wireless network card can also build a LAN. Now, more and more users are using laptops. To make it easier for users to move their offices and access the Internet at any time, some families or organizations use wireless routers to build a wireless network, which provides convenience for laptops to access the Internet

In a project I am going to implement, there are two sets of network systems within a company to achieve physical isolation of the internal and external network, and employees to access the internal and external network using a dual-NIC Isolator to switch to achieve a different network. With the progress of business and

optical fiber data interface network) is actually the alias of "ether", fddi and eTher has a similar source address and destination address, so you can use the fddi protocol package as the ether package for processing and analysis.The other keywords indicate the protocol content of the listener package. If no protocol is specified, tcpdump willListen to the information packages of all protocols.In addition

1, the client program can not use how to do? Wireless Card driver and client installation complete, open Tp-link wireless client application, such as the following problems: 1, the Client interface options are gray, unable to operate. 2, search for no signal, but to confirm the presence of strong wireless signal around; Please follow the following methods to troubleshoot: If the wireless card is not plugged in, t

Why use the leaf-spine topology network? (1) The structure of the three-layer network has developed very mature, but the leaf-spine (leaf node, spine ridge node) structure is becoming more and more popular. How should network designers choose? Despite the wide application and mature technology of the layer-3

For the majority of network administrators, the launch of Windows Server is a good news, because you do not have to bother looking for network monitor programs from third-party vendors, windows2000Server itself provides a very good network monitor program. Let's take a look at how Windows2000Server uses Network monitor

Use mobile Web form in Visual Studio. NET to create a mobile network application In the past few years, the world has been seen as an explosion of new devices-including network phones and the Internet-making personal digital assistance possible-it ensures that it is the next-generation user of the software you created today. When this explosion develops to consum

Security management requires step-by-step prevention and how to use itGroup PolicyMakes network printing more efficient? This article provides a detailed description. Using a printer in a LAN not only effectively saves printing costs, but also greatly improves printing efficiency. However, due to the openness of the networkNetwork PrinterManagement is not as convenient as local printer management. To this e

vswitch, connect one by one, and check whether the connection is normal until the connection is interrupted. Then we can determine which network cable is faulty, find the problematic host through the network cable. . Virus detection and removal can generally solve the problem. However, we can see that this workload is very large. If there are enough switches and there are more than one faulty computer, it

How to use wireless network cards? First, you need to buy a wireless network card! There is a wireless network card of China Netcom, which is a mobile phone card and can be used directly, which is very convenient. After the wireless network card is inserted, follow the promp

-click to select Enable, and then re-enter the command to create a wireless network. (Note: This virtual device appears only after the hosting network is created and is normally hidden and invisible) If the above operation is complete, the "Local Area Connection *" is still unavailable, please open Control Panel--"system and security"--"Windows Firewall", click on the left "allow programs or fe

Use NFV and SDN to implement 5G network slicing and nfvsdn5 g Slicing Network Slicing Network slicing will play a key role in the implementation of 5g, which allows operators to run multiple virtual networks on a single physical infrastructure. With the 5g commercialization in 2020, many people are wondering to what e

download speed of a 10 MB optical fiber can theoretically only reach MB, and the network loss, that is, about 1 MB, is normal. Many of us think that the download speed of a 10 MB optical fiber can reach 10 MB, which is incorrect. 3. Network Connection media selection Similarly, it cannot be used too often as a connector for connecting network cards and

To improve network performance, it is very suitable to use the mesh network technology. At the same time, you must pay attention to many problems. Only by solving these problems can you better improve network performance, we should also sum up our experience to avoid similar problems in the future. Mesh

Are you still using qq uc's poor dozens of M network hard disks?Google 2G network hard drive! Chinese edition http://google.tohot.com/gmail/download/cnGMailDrive109T0.exe Original http://www.herbsforlife.nl/download/ Http://www.herbsforlife.nl/download/gmailfsnew109.zip Http://blog.csdn.net/freexploit/ English introduction http://www.viksoe.dk/code/gmail.htm Features of Gmail drive shell extension1.0.9 The

12 newest network monitoring tools that are easy to use and cost-freeGuideTo make a multi-level organization run well and run smoothly, a very arduous and important task is to do a good job of network management. Each organization is staffed with dedicated personnel, namely, network analysts, for

SubmittedIcebergOn 2004, October 9, am.C/C ++ I. Development Purpose and Principle---- During product development, the company needs to study the internal network management information structure of multiple Ethernet switches (also known as smart hubs). Therefore, it is necessary to compile a program for "eavesdropping, record the communication content of the network management program and the swi

resources or network bandwidth restrictions are no longer the bottleneck resources during the establishment of the enterprise network. We decided to adopt the Static Routing Technology, which is another feature. Network administrators can use static routing to control network