Cnnic the importance of the security of the domain Name System

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In Sweden, a large area of broken network incident news came, all parties gave a high degree of concern. The deputy director of China Internet Network Information Center (CNNIC) also expressed his views on the matter. Sweden's top-tier domain name has been paralyzed overnight in Swedish networks. SE. Due to the relevant technical personnel in the day-to-day maintenance of the domain name of a serious error, resulting in. SE 900,000 domain names do not parse correctly, and thus affect the full range of Swedish Internet applications, including Web site visits, to the normal operation of the entire country.

The reason, is a small mistake caused the trouble. The administrator of the Swedish national domain has used the wrong configuration script to update. SE's parsing data, resulting in the global DNS system not properly identified. SE below domain name. Although the. SE top-level domain server updates the data after 1 hours of failure correcting the error, the service is back to normal, but due to the caching mechanism of the domain Name Service system, the entire Internet. SE parsing requires a certain amount of time to step on you. All back to normal. Some large ISPs recover the correct data by cleaning up the cache, and some small ISPs are not processed in time, causing some users to be affected even 24 hours. It is because of this small negligence that led to the global use of. SE's web site access has been affected by a temporary paralysis of the Swedish Internet.

The complete domain Name System consists of four main links: The recursive Domain Name service system (i.e. the local domain name server), the root domain service system, the top-level domain Name service system and the Domain Name service system at all levels. Any part of the system failure, will result in the corresponding range of network application paralysis, large to a country and region of the network will be completely paralyzed, small to a website will not be accessible. National Domain Name System security "far-reaching".

CNNIC deputy director Xiaodong said that Sweden's domain Name system failure, at least to bring us two warning: first, the safety of a country's domain Name system is related to a country's internet overall situation. The domain Name System security related work cannot be careless, otherwise the consequence is quite serious. Second, all countries should strengthen the security of all levels of domain Name System coordination and protection efforts.

Look at these two warning points, in fact, can be summed up in a sentence: The Domain Name System is very important, but we do not enough. The recognition of importance shows that more and more people are starting to look at it and begin to realize the key role of the domain Name system in the network. Be in danger, nip in the bud, really out of the question who can not afford,. cn and. SE are not the same thing!