The reasons for the delay: 1, the network itself: such as the network is filled with a large number of datagrams (bandwidth is not enough, file downloads, worms, broadcast storms, etc.), datagrams are lost 2, line problems: the quality of the network cable is not good 3, the router (gateway problems): too many datagrams, their own network layer driver version is too low, the gateway does not reflect the 4, the problem of viruses: popular arp viruses, which will Mislead you to point to the wrong gateway 5, the problem of their own machines: generally act as a server when the traffic is large These are due to the Ethernet itself has a protocol vulnerability, not good management, which is the technical root cause of frequent network problems. Nowadays, the immune wall has a good solution to the intranet problem The first is the defense against network viruses. Only by effectively preventing the onset of viruses can we keep the network in a healthy state and ensure the security and stability of the network. For the biggest factor affecting the network, network protocol-type viruses through the usual Internet operations, Trojan horses, hacking and other ways, very covert and rapid attacks on the network. The usual traditional means of virus checking and filtering can no longer do anything about it. Waiting for the virus to enter and attack, and then looking for the appropriate means to check and kill, has been completely lagging behind the disaster. At the same time, many times the virus does not reside in the intranet system, after the attack is likely to be no trace. In addition, hacker attacks are not carried out in the form of viruses, antivirus is even more impossible to talk about. Therefore, the most important thing to cope with network disasters is not to check and kill after the fact, but to strengthen the immunity and active defense. In other words, even if the system is infected with a virus, the immune wall should be able to ensure that the virus and attacks can not attack. Just like the human body, exposure to hepatitis, intestinal, respiratory and other viruses, due to the role of autoimmunity, does not necessarily get sick. Therefore, the immune wall is different from antivirus software, anti-virus wall, its role is to improve network immunity, in contact with viruses and attacks, to stop their attacks. Second, it is the management of Internet behavior. Security and management are inseparable, disorderly Internet behavior can not guarantee the stability of the network, high-speed, smooth. The harm to the network is also very serious, no less than the destructive effect of virus attacks. The intranet is *** enjoy Internet access, access bandwidth and intra-network traffic have certain restrictions. If a terminal with a large amount of data transmission will result in the abuse of bandwidth, affecting the network of other terminals within the Internet operation, in serious cases, the entire network is completely trapped in a stagnant paralyzed state. Common BT, Thunderbolt downloads, pplive live streaming and other popular online means, it is very easy to play a bad role. In addition, unhealthy access will also be infected with network viruses, such as involving QQ promiscuity, illegal websites, pornographic information, etc., the chances of infection will be greatly increased. The role of the immune wall is to provide network administrators with an effective means of regular and selective control of these Internet behaviors, to ensure that the network is always in a controlled security state, the stability of the intranet will be guaranteed. Image to understand, do not smoke, do not drink, often eat vegetables and fruits, is to improve human immunity, to maintain health means. And the immune wall through the management of Internet behavior, to strengthen the network system robustness, to prevent beforehand, play the same role. I suggest you also use one

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