Shulou(Shulou.com)06/01 Report--

What are the potential threats to network security? Under normal circumstances, we will ignore those infrastructure security tips, because we think that there will not be any big problems. If we have this idea, it is really wrong. We cannot be careless in view of network security. As long as there is a slight problem, it will cause huge losses, information leakage, data loss and so on.

Therefore, in order to ensure network security, the person in charge of security must monitor the status of routers, switches, server storage and other devices at any time, so that the network management can quickly detect whether the peripheral security is threatened. If the following four early warning messages appear, we must pay attention to them and cannot be ignored.

First, most logins to network devices are valid actions entered by the network administrator, but some are not. It generally includes the administrator's access to the device during working hours or holidays, repeated login failures, or modification of access rights. If the suspicion of repeated login attempts cannot be detected in time, the enterprise will be vulnerable to *. Immediate alerts to suspicious events allow network managers to take action before the network is threatened. This approach contributes to compliance audits because it provides evidence that the activities of privileged users and their associated devices can be closely monitored. For example, who logged in to what device at what time, as well as the length of login and the rules of login.

Second, the related major threats are also misconfigured. Incorrect equipment adjustment will weaken the security of the periphery of the network, cause problems during the supervision and audit, and even lead to system interruption, resulting in network business in trouble. If the system is interrupted in some important enterprises, it will become a big accident. For example, misconfigured firewalls can make it easy for people to access the intranet, which in turn can cause lasting damage and damage. Knowing who has changed what is the insight and control of network equipment by operation and maintenance personnel. The continuous audit process can make people have a better sense of user responsibility and quickly detect and resolve potential security incidents before they cause bigger problems.

Third, nowadays, many lawbreakers often scan the network to understand the network structure and defense response of an enterprise, so as to carry out a precise attack on the network of the enterprise. If the security threats scanned on network devices are ignored, there is no perfect device visualization system, and data backup is not carried out, then the malicious behavior of the users will undoubtedly be missed until the sensitive data of the enterprise is destroyed or stolen. You won't know it's been hijacked or stolen. Therefore, in order to strengthen the protection of network security scanning threats and minimize the risk of data leakage, it is necessary to ensure continuous monitoring of network equipment. This visibility will help operators to know which hosts and subnets have been scanned, which IP address they started scanning from, and how many scanning attempts have been made.

Fourth, there is also a virtual private network (× ×) access, which is one of the common methods for many enterprises to improve the security of remote connections, but this method has many security risks. In fact, xxx connections are generally used by anyone in the enterprise without any approval. Practice shows that there is no 100% security, and there is a risk in any × × connection. The main risk scenarios include users who connect through the public Wi-Fi (in which case someone may steal their login credentials), or users who usually do not use × × suddenly start using it (which may indicate that the user has lost the device while others are trying to log in using it). Only by maintaining visibility to network devices can you effectively track every × × login attempt. However, visibility through the network will provide information about the user trying to access the network device, the IP address of each attempt to authenticate, and the reason for the failure of each × × login. Mohist security recommendations, with appropriate regulatory approval, and only available to those employees who have to use xxx access due to business needs, through the right of xxx access.

Nowadays, the network security in the Internet era and big data era is complex and challenging. If you want to quickly enhance the network security of enterprises, the above four early warning messages must not be ignored. Because the real intention will be overwhelmed by a flood of threat alerts. Under the premise of not ignoring it, if there is * *, we can quickly discover the real source of * * from a large number of early warning tips, and respond quickly to minimize the loss.

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