Security of Computer Network System Abstract: This paper discussed the secure and dependable problem about the comp uter network system. On some aspects: the importance of network security, basic the ory, function, and the method of solving a problem, etc. Good views for solving the pr oblem are put forward. It strengthens people’s consciousness on network security.
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Key words: Computer network Virtual private network Encryption techniques Firewall Introduction: Along with the computer network technology development, the network security and the reliability have become the question of common Interest by all users The people all hoped their own network system can move reliably, not external Intru der disturbance and destruction. Therefore solves the network security and the relia ble problem carefully, Is a guarantee the network normal operation’s premise and saf eguard. First, the importance of the network security.
With the informationization developi ng fast today, the computer network obtained the widespread application, but along with the network information transmission capacity growing faster, some organizatio ns and departments benefit the speedup with the service operation in the network, w ile, the data has also suffered to extent attack and destruction. The aggressor may i ntercept the information in the network, steals the user’s password, the database info rmation; also may tamper with the database content, the forge user’s status, denies o wn signature.
And what is more, the aggressor may delete the database content, the destroy node, releases computer virus and so on. This cause data security and own b enefit have received the serious threat. According to American FBI (US Federal Bureau of Investigation) investigation, the n etwork security creates the economic loss surpasses 17,000,000,000 dollars every year 5% corporation report finance loss is because the computer system security proble m creates. More than 50% safe threat come from inside.
But only 59% loss could be p ossible estimate. In China, the economic loss amount in view of financial domain and the bank, negotiable securities computer system security problems creates has reach ed as high as several hundred million Yuan, also sometimes occurs in view of other p rofesslon network security threat. Thus It can be seen, regardless of Is the mean attack, or unconscious disoperation, will all be able to bring the inestimable loss to the system. Therefore, the computer n etwork must have the enough strong security measure.See More on Computer