abstract

The update and development of computer network technology has also made it actively promoted and applied in many fields. Computer networks have been widely popularized in China, and similar local area networks have become a very important part of current information technology. This paper analyzes the common problems in the maintenance of computer local area network, and puts forward the corresponding maintenance methods to ensure the stable operation of computer network.

Keywords computer LAN maintenance

The network security of computer local area network is generally higher than that of development network, and the uplink and downlink network speed of local area network is also very good, which has been widely used in major campuses and enterprises, and information security can also be guaranteed. However, there are still some security problems in computer LAN. If it cannot be handled in time, it will inevitably cause losses to individuals and enterprises. Therefore, we must strengthen the maintenance of computer local area network to ensure the safety and stability of computer network.

1 Overview of Computer Local Area Network

Computer local area network can provide more secure and efficient network services for users within a specified range, and data transmission within the local area network is more secure. However, the network environment of LAN will be affected by other factors, and there will also be security risks. Therefore, we need to strengthen network maintenance and improve network security.

In the computer local area network, if the measures such as encryption and decryption are not in place, it is very easy to cause problems in the transmitted data. We need to take corresponding measures to improve the security of the network, and we can increase link-level equipment and outlets to ensure its security. This method is costly. We can also use network layer encryption to build a secure channel and improve the security of data transmission. Therefore, the application of computer local area network has both advantages and security risks. In order to ensure the normal operation of computer local area network, it must be maintained regularly to ensure network security.

Analysis of Common Problems in Computer Local Area Network

2. 1 network security issues

The security of LAN is generally completed by firewall. With the update and progress of computer technology, there will be more and more loopholes in the traditional firewall, which can no longer meet the needs of LAN. If the update and maintenance work is not in place, it will inevitably lead to privacy leakage due to loopholes. At the same time, there are also higher requirements for the operating environment of computers. If the humidity, load, maintenance and other conditions can not meet the requirements, it will inevitably reduce the reliability of the LAN and lead to security problems.

2.2 LAN network line problem.

The line faults of local area network are mainly manifested in the following aspects:

2.2. 1 physical failure

The problem of computer LAN is caused by line fault, which accounts for 70% of the LAN fault probability. The main causes of line faults are human factors and natural factors.

Single line fault

Local area network wiring mostly adopts single-wire wiring. If the line fails and the LAN cannot be switched in time, the hub is a single point of failure device. After the line failure, the computer network will not work normally.

2.3 Logical failure

Computer LAN is invaded by computer virus in operation, which will lead to the closure of connection ports and affect the overall operation of LAN network. At the same time, when the logic failure of LAN network card program occurs, it will also affect the network operation of computer LAN, leading to the emergence of security risks. Logical failure will greatly affect the system compatibility and transmission protocol of local area network, affect the normal operation of server address, and can not play the role of computer local area network normally.

3 LAN maintenance measures analysis

3. 1 Development of software maintenance work

First, clearly divide the stages; LAN is divided by VLAN, which controls network traffic. VLAN can be maintained by network card, so there is something wrong with data transmission. The purpose of network segmentation is to restrict illegal portals, avoid access to harmful resources, and greatly improve the running speed of software in LAN and network security. Secondly, when the software is in daily maintenance, we must carefully check the loopholes in the system and make a good data backup. When the LAN is attacked, the system may have loopholes and need to be upgraded. To this end, technicians must download vulnerability patches to upgrade and repair them to avoid computer attacks. Data backup can save the data information in the computer. If the computer is invaded and data is lost, data backup will minimize the loss.

3.2 LAN hardware maintenance work

The hardware maintenance of computer LAN is mainly as follows:

3.2. 1 line maintenance

Line is a very important part of LAN operation, which has a great influence on the normal operation of the network. In order to ensure the normal transmission of data, twisted pair can be used as the transmission medium, and certain measures must be taken to avoid signal interference. When wiring network lines, wires and other lines with electromagnetic interference should be avoided as much as possible to ensure the normal operation of LAN.

3.2.2 Network equipment maintenance

LAN network equipment mainly includes hubs and routers. LAN staff must regularly check network equipment and close worthless projects such as IP broadcasting. Usually, set the house authority to IP geology.

Maintenance of main engine

The host computer has a great influence on the overall performance of the computer. If the server can't process data quickly, we must check the disk and use the drive matrix controller to improve the running speed.

3.3 Network Maintenance Management

In the network maintenance of computer local area network, the computing power of network management is very important, and the management of maintenance is also very important, which has a great influence on the safe operation of local area network. In order to strengthen network maintenance management, we must pay attention to the following aspects:

3.3. 1 Building a secure network environment

Strictly manage all kinds of software and network equipment, and regularly kill viruses. In addition, LAN must start monitoring software, limit illegal operations in the network, set network passwords and other measures to avoid the invasion of computer viruses.

3.3.2 Strengthen the management of network equipment.

We can establish a network management system according to the specific network usage, and users should authenticate themselves and set access rights. Authentication of access identity mainly includes encrypting data from client and server to ensure the security of user data. Through the use of encryption technology to ensure the safe and stable operation of computer local area network.

4 abstract

The security and reliability of computer local area network need scientific maintenance. Therefore, in order to avoid the computer local area network being invaded by viruses, resulting in data loss, we must take necessary measures to maintain the computer network and build a safe and stable operating environment.

refer to

[1] Han Xu. Analysis on the Maintenance Method of Computer Local Area Network [J]. Communication World, 20 15( 10).

[2] Xu Meiyong. Analysis of computer local area network maintenance methods [J]. Technical prospect, 20 15( 19).

[3] Tianchi. Analysis on the current situation and countermeasures of computer local area network security [J]. Journal of Jiamusi University, 20 13( 10).

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