Immune Wall —— A New Technology of Intranet Security and Management
"Immunity" is a biomedical term, which refers to the specific functions of human body, such as "physiological defense, self-stabilization, immune monitoring".
Just like the familiar computer virus, in the computer industry, "virus" is the borrowing of medical terms and images. Similarly, now "immunity" is also used to explain a function of computer network, and "immune wall" is the main means to realize network immunity.
In the process of people's use, computer network carries all kinds of tasks of data transmission and information exchange, and it runs all the time, so it can be considered as an active organism. As the name implies, immunity is to make the network have the functions of "defense, stability and monitoring" like the human body. Therefore, the function of immune network is to make the network stable and robust by installing immune wall.
Specifically, the immune wall mainly solves the problems of system security and online behavior management in the intranet. Traditionally, the Internet is an extranet, and an enterprise's local area network is connected to the extranet through broadband, which correspondingly becomes an intranet. In this way, the intranet forms an independent system similar to the human body. The immune wall will play a role in this independent intranet system.
At present, the problems of intranet mainly appear in two aspects. One is the proliferation of network viruses, which can invade the intranet uncontrollably to attack and cheat, which is hard to prevent; The other is the uncontrolled downloading of end users in the network, which causes the abuse of bandwidth and affects the smooth operation of the whole network. Therefore, the current enterprise network is generally broken, stuck, stolen, difficult to manage and inefficient. This unstable and unsafe network state, just like the human body, is riddled with diseases and has low immunity.
So, how does the immune wall make the network have immune function, so as to achieve the goal of stability and robustness?
The first is the defense against network viruses. Only by effectively preventing the outbreak of virus can the network be in a healthy state and ensure the security and stability of the network.
For the biggest factor that affects the network, network protocol viruses attack the network very stealthily and quickly through ordinary online operations, such as Trojan horses and hacker attacks. Traditional means of killing and filtering viruses have been powerless. Waiting for the virus to enter the attack, and then looking for the corresponding means to kill it, has completely lagged behind the disaster. At the same time, many times the virus does not reside in the intranet system, and it is likely that there will be no trace after the attack. Moreover, hacker attacks are not carried out in the form of viruses, let alone antivirus. Therefore, the most important thing to deal with network disasters is not to kill afterwards, but to enhance immunity and take the initiative to defend. In other words, even if the system is infected with viruses, the immune wall also emphasizes that viruses and attacks cannot occur. Just like the human body, contact with hepatitis, intestinal tract, respiratory tract and other viruses, due to the role of autoimmune, may not necessarily get sick. Therefore, Immune Wall is different from antivirus software and antivirus wall. Its function is to improve the network immunity and stop viruses and attacks when they come into contact with them.
The second is the management of online behavior. Security and management are inseparable, and disorderly online behavior cannot guarantee the stability, high speed and smoothness of the network. The harm to the network is also very serious, no less than the destructive effect of virus attacks.
Intranet is * * * Internet access, and the access bandwidth and network traffic are limited. If a terminal transmits a large amount of data, it will abuse the bandwidth and affect the online operation of other terminals in the network. In severe cases, the whole network will come to a complete standstill. Common online popular means such as BT, Thunder download and pplive live broadcast can easily play a bad role. In addition, unhealthy visits can also infect network viruses, such as QQ promiscuity, illegal websites and pornographic information. And the chances of being infected with the virus will greatly increase. The function of immune wall is to provide an effective means for network managers to control these online behaviors regularly and selectively, to ensure that the network is always in a controllable and safe state, and the stability and smoothness of the intranet are also guaranteed. Figuratively speaking, not smoking or drinking, and often eating vegetables and fruits are the means to improve human immunity and keep healthy. The immune wall plays the same role by managing online behavior, strengthening the robustness of the network system and preventing problems before they happen.