Prevention Strategy of Computer Security Problems in Network

Times

Wei Zhou

Shanghai University of Engineering Science, Shanghai, 201620, China

Keywords: Computer network, network security, attack, prevention strategy.

Abstract: In network times, information can be randomly exchanged and connected, thus bringing network security

problems as well as convenience for people's life and work. Therefore, it is necessary to find a method to

avoid influence of computer network security to application with the use of computer network technology.

Network security prevention techniques, including firewall and password setting, play an important role in

safe operation of computer network.

1 INTRODUCTION

In network times, fast information communication

promotes the use of information resources and

progress of society. Computer network has been an

important tool for modern life and work. Network

security problems, including disclosure and damage

of important information, have threatened network

security, thus bringing huge losses to the users.

Some methods, such as protocol isolation technique

and firewall, can be used to protect computer

network (Nie Mengjie, 2014). In addition, scientific

cognition of computer network security and

effective use of prevention technology can minimize

network security threats.

2 COMPUTER SECURITY

ANALYSIS IN NETWORK

TIMES

2.1 Computer security in network

times

Network is a free information space. Not all the

problems can be solved by prevention of computer

network. E.g., identification can determine user

identity rather than truth and information

transmission security between users. Virus defense

of computer network can prevent damages from

computer virus. However, it cannot perform

identification and determine user identity in

network. With the development of network,

computer network security, including individual

privacy and state secret, has been one of key

problems of computer fields. Firstly, computer

network security affects national safety and social

stability. E.g., the terrorists apply network to make

false information and political intrigue. Secondly,

computer network security can cause great threats to

economic development. E.g., hacker attack is used to

transmit virus, thus damaging regular service of

enterprises and individual users and causing

economy and property losses (Liu Yanqing, 2012).

Thirdly, with the popularization of network, the

criminal activities become more and more rampant

in hidden space, thus affecting social stability as

well as personnel and property security. In

conclusion, computer security is threatened.

Acquisition, control and use of information are

affected by network communication, thus causing

great influence to individuals, enterprises, countries

and society. Consequently, with the development of

computer technology and network, computer

network security is getting more and more attention.

2.2 Computer attack analysis in

network times

The largest problem of computer network security is

computer attack in network times. The hacker can

steal information resources, spread false information

and destroy computer program by using computer

attack, thus causing serious results and bad social

influence (Zhang Yanping, 2014). Computer attack

229

Zhou W.

Prevention Strategy of Computer Security Problems in Network Times.

DOI: 10.5220/0006447802290231

In ISME 2016 - Information Science and Management Engineering IV (ISME 2016), pages 229-231

ISBN: 978-989-758-208-0

229

contains active and passive behavior. The former

can destroy important computer information by

various methods; the latter can intercept and decode

secret computer information. In general, computer

attack is presented by change, damage and steal of

information. The common attack methods are as

follows.

(1) Forged IP and MAC addresses can result

in network interruption, communication block or

indirect invasion.

(2) The attack, started by vulnerability of

development spot, can cause unusual software

operation and system crash.

(3) Trojan horse program and virus are usually

used to start attack by the hacker. Trojan horse

program has characteristics including concealment,

latency, ignitionability and destruction. Once

attacked, the host will be controlled and destroyed,

thus causing disclosure of important information.

Virus can be spread through hard, soft and light

disks as well as network operations including

document copy and transmission, thus causing

damage of system documents and decrease of

working efficiency.

(4) With characteristic of concealment,

olfactory detector can intercept information

destination from network interface and obtain user

name and password by analysis of information, thus

causing network security threats. Scan attack is to

attack the host using computer network vulnerability

and obtain host information.

As the important means by which criminals

attack network, these attack methods are prevention

targets of network security. Computer network has

characteristics such as open, wide distribution and

resource sharing. The hacker can perform hostile

attack behaviors including data interception,

correction and damage, thus causing hidden danger

of computer network application. At present, the

best method to deal with all kinds of attack is

prevention because of virtual network and difficult

user identification.

2.3 Factors causing network security

problems

Factors that cause computer network security

problems in network times are as follows. Firstly,

damage of computer hardware such as hard disk will

cause system crash. Secondly, there is great security

hidden danger in network system. E.g., open

network provides convenience for hacker to attack.

Besides, hackers can disguise IP address to perform

network attack based on TCP/IP protocol. Thirdly,

the defect and vulnerability of computer software, as

the target of hacker attack, can cause operational

obstacles and security problems. Fourthly, most

operators are short of security prevention

consciousness of computer network application,

although with popular computer network. E.g.,

simple user passwords, such as single repeat

numbers and birth dates, are easily decoded, thus

causing hidden network security danger. In addition,

operation miss can result in system crack and

document loss. Fifthly, some network attacks are

caused by curiosity and desire, while other attacks

are performed with purpose. E.g., serious security

problems can be caused by stealing information and

password of objective computer, as well as activities

including commercial crimes, religious

dissemination, spread of harmful information and

program damage. Sixthly, Network is an open

environment with a large amount of information at

different levels. Great benefit of network crimes and

deficiency of computer network escalate network

security problems. With the popularization of

network security, various measurements are

conducted to ensure security and stable operation of

computer network.

3 PREVENTION STRATEGY OF

NETWORK SECURITY

3.1 Prevention technology of network

security

Prevention technology of network security is to

prevent and clear hidden danger in network

operation. At present, protocol isolation, firewall and

encryption techniques are widely used.

(1) Internal network is insulated from the rest

to form a protocol by protocol isolation technique.

The two hosts are connected with network, serial,

parallel and USB interfaces and bound by

specialized protocol. If network is invaded,

dangerous information and file packets will be

isolated by protocol for the purpose of prevention.

Under specialized protocol, operators can hardly

enter internal network for invasion through external

network, thus making a positive significance in

internal network protection.

(2) A barrier between internal and external

network can control information communication of

different networks by filtration and detection of

firewall technique. Then, internal network can be

prevented from bad access of external users.

ISME 2016 - Information Science and Management Engineering IV

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ISME 2016 - International Conference on Information System and Management Engineering

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(3) Although convenient and simple,

encryption technique can be easily attacked with

finite security. Mixed encryption technique applies

hardware and software encryption methods to build

connection between internal and external network on

basis of mutual recognition. By this technique,

information transmission can be protected.

(4) After scanning computer for inspection,

we can find the attack situation by vulnerability and

carry out system repair using patch. The largest

advantage of vulnerability scanning technology is to

find and monitor the vulnerability of system security

within a short time.

3.2 Strategy analysis of computer

network security prevention

Computer network users have paid great attention to

the heavy losses caused by computer security

problems. Prevention of network security is

improved. Firstly, effective techniques such as

protocol isolation and firewall are used to reduce

security risk of computer network. E.g., in firewall

application, the firewall logs are regularly kept and

examined to find attack behaviors and bad internet

records, thus eliminating serious security threat to

computer application. Secondly, antivirus software,

system reinstallation and disk formatting are used

for worm elimination in infection zone. Meanwhile,

updates and remote killing virus technology of

antivirus software should be emphasized to ensure

security and operation of computer network.

Thirdly, unknown mobile HD and U disk should not

be used to avoid virus transmission by connection.

After worm elimination, the external hardware can

be read to ensure computer application security.

Fourthly, comprehensive computer security

education and cultivation are conducted to intensify

security consciousness and legal and moral idea,

thus effectively reducing security risk of computer

network. E.g., complicated login account and

password should be used to ensure security.

Different accounts in the same host can maximize

security prevention and minimize the losses caused

by network attack. The user password should be

regularly updated. Numbers, letters and special

symbols are used to improve security of password.

Fifthly, security levels are set to intensify account

management according to differences of user levels,

thus avoiding security issues including account

leakage. Sixthly, unified management of computer

hardware, including temperature and humidity of

machine rooms as well as dust and static electricity

prevention, is emphasized for computer operation

security. Seventhly, users should make regular back-

up copies of computer system and documents for

recovery. Effective remedy will be performed to

minimize network losses and promote computer

network application when there are problems such as

hardware breakdown, operation fault and attack.

4 CONCLUSIONS

Computer network and security prevention

techniques are methods which cannot replace human

thinking and operation. In network times, computer

security prevention should intensify security, legal

and moral consciousness of operators and regulate

network application to ensure operation security and

stability.

ACKNOWLEDGEMENT

The work was supported by Research and

Application of High-end Large-scale PLC

Automation System, Subproject of The National

High Technology Research and Development

Program of China (No: 2013AA040302).

REFERENCES

Liu Yanqing, Development and Security Prevention

Strategy of Computer Network Technology, Digital

Technology and Application, 2012(05): 179-179.

Nie Mengjie, Computer Network Communication Security

and Its Prevention Strategy, Chinese Electronic

Commerce, 2014(13): 34-35.

Zhang Yanping, Computer Network Communication

Security and Its Prevention Strategy, Digital

Technology and Application, 2014(05): 198-198.

Prevention Strategy of Computer Security Problems in Network Times

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Prevention Strategy of Computer Security Problems in Network Times

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