Network security, these knowledge should be remembered!

Network security refers to the ability to take necessary measures to prevent attacks, intrusions, interference, destruction and illegal use of the network and accidents, so that the network is in a stable and reliable operation state, and to ensure the integrity, confidentiality and availability of network data.

In today’s era, network security and informatization have an impact on many fields of a country, and network security has become an important part of national security. Without network security, there will be no national security, no stable economic and social operation, and it is difficult to protect the interests of the broad masses of the people. From a global perspective, the threats and risks of network security are becoming increasingly prominent, and they have penetrated into political, economic, cultural, social, ecological, national defense and other fields. Network security has become one of the most complex, realistic and severe non-traditional security problems facing our country.

To correctly establish the concept of network security, we must clearly understand the main characteristics of network security:

First, network security is holistic rather than fragmented.In the information age, network security has a close relationship with national security and many other aspects of security.

Second, network security is dynamic rather than static.The network has become highly interrelated and interdependent, and the threat sources and attack methods of network security are constantly changing, so it is necessary to establish a dynamic and comprehensive protection concept.

Third, network security is open rather than closed.Only based on the open environment, strengthening foreign exchanges, cooperation, interaction and games, and absorbing advanced technologies, will the level of network security be continuously improved.

Fourth, network security is relative rather than absolute.There is no absolute security, we should base ourselves on the basic national conditions to ensure security and avoid pursuing absolute security regardless of cost.

Fifth, network security is common rather than isolated.Network security is for the people, and network security depends on the people. Maintaining network security is the common responsibility of the whole society, which requires the joint participation of the government, enterprises, social organizations and the majority of netizens to build a network security defense line.

In daily work

If you don’t pay attention to the correct use of the net

Will pose a threat to network security.

Everyone should avoid the following violations

??常见错误情形：Intranet computers are connected to the internal network, and at the same time, they are connected to the external network through dual network cards or wireless network cards.

??常见错误情形：After disconnecting the intranet, the intranet computer connects to the external network through the network card or wireless network card.

??常见错误情形：First, the external network computer accesses the internal network through the internal network cable; Second, the intranet will be wirelessly networked privately, and the intranet will be connected through intranet Wi-Fi by using the extranet computer.

　??常见错误情形：First, plug the data cable into the USB interface of the intranet computer to charge smart devices such as mobile phones and tablet computers; Second, the mobile phone connects the intranet computer to transmit files through Bluetooth devices.

??常见错误情形：First, the printer connected to the internal network is connected to the external network at the same time through the Wi-Fi function; Second, the mobile phone prints through the Wi-Fi signal connected to the intranet printer.

??常见错误情形：First, the office computer starts in weak password or has no password, and various application systems and service platforms such as weak password; Second, new or reinstalled computers are directly connected to the network without setting strong passwords; The third is to post the plaintext password on the display or store it in the computer.

??常见错误情形：一是发生岗位变更、人员离职等情况时，未及时申请变更（注销）相关账号和权限；二是部分账号权限大于岗位职责应赋予的管理权限。

??常见错误情形：打开来源不明的网站链接或者点击邮件中的不明链接下载未知附件，容易感染病毒或被植入木马。

??常见错误情形：一是办公电脑未设置带有密码的屏保；二是人员离开后电脑不关机，办公室也不锁门。

??常见错误情形：一是将要求统一安装的防病毒软件进行卸载；二是外网下载的软件未进行病毒检查直接拷贝到内网电脑上安装；三是长时间未对各类漏洞进行修复。

??常见错误情形：一是故障电脑擅自找外部单位维修处理；二是报废和闲置的电脑、U盘等随意丢弃。

??常见错误情形：一是私自将笔记本、台式机、智能手机等设备接入铁路内网；二是内、外网U盘交叉使用；三是直接使用来历不明的U盘等外接设备。

??常见错误情形：一是将内部文件资料通过QQ、微信、外网邮箱、云盘等进行存储和传输；二是将内部文件直接拍照发朋友圈等，甚至发布敏感信息。

??常见错误情形：一是机房等要害部位日常不上锁或进出管理不到位，外部单位人员在机房作业未安排本单位人员陪同；二是未核实对方身份，随意将内网或外网电脑借给外部人员使用。