Shulou(Shulou.com)05/31 Report--

What is the H3C port security technology? I believe many inexperienced people are at a loss about it. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

Today, with the increasing development of the network, security is a topic that we have to pay attention to. However, there are many threats to switch ports in the enterprise, such as unauthorized user hosts are connected to the enterprise network at will. For example, employees can unplug the network cable of a host computer without the consent of the administrator, plug it into the notebook they have brought, and then connect it to the network of the enterprise, which will bring great security risks and may cause the loss of confidential information. Another example is to install network devices such as hub HUB without consent. Some employees will do so without authorization in order to increase the number of network terminals. Plug devices such as hubs, switches, etc., into the network interface of the office. In this way, it will lead to an increase in the traffic of the switch interface corresponding to this network interface, resulting in a decline in network performance. How can these problems be better eliminated for administrators?

Port security is a security mechanism to control network access based on MAC address, which is an extension of the existing 802.1X authentication and MAC address authentication. This mechanism controls the access of unauthorized devices to the network by detecting the source MAC address in the data frame received by the port, and the access to unauthorized devices by detecting the destination MAC address in the data frame sent from the port.

The main function of port security is to let devices learn legitimate source MAC addresses by defining various port security modes, so as to achieve the corresponding network management effect. After starting the port security function, when an illegal message is found, the system will trigger the corresponding features and deal with them in a pre-specified way, which not only facilitates the management of users but also improves the security of the system.

Here we introduce some configuration issues of H3C devices.

1. Port isolation technology. Port isolation is to achieve layer 2 isolation between messages. Different ports can be added to different VLAN, but limited VLAN resources will be wasted. By using the port isolation feature, the isolation between ports in the same VLAN can be realized. Users only need to add ports to the isolation group to achieve layer 2 data isolation between ports in the isolation group. The port isolation function provides users with a more secure and flexible networking solution.

2. The port binding of the switch is to bind a certain port of the switch and the MAC address of the computer connected below with ip, so that even if other computers are secretly connected to this port, it cannot be used. Increased security.

After reading the above, have you mastered the method of H3C port security technology? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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