Recently, ningxia telecommunication limited company monitors DNS server to be atttacked by the hacker, affected the network visit of partial user. Via checking, it is a hacker initiated “ is distributed reject to serve attack (DDOS) ” , bring about server resource to be taken up in great quantities, cause partial user to get online normally be affected.

Be in our country, DDOS atttacks majority to come from the United States, occupy 39 ％ , and China is the main goal that rejects to serve attack, occupy 63% . This is Asia-Pacific and safety of Japanese area Internet the one share data in minatory report. China becomes the main target that DDoS atttacks. According to introducing, the behaviour that always can cause lawful user to cannot visit normal network serve quite belongs to “ to reject a service to atttack ” .
Basically have 3 kinds of popular DDOS charge currently: SYN/ACKFlood attack: This kind of attack basically is the SYN that forges source IP and source port in great quantities through be being sent to fall victim lead plane or ACK bag, the cache resource that causes main engine by extinct or at send a response to wrap and cause decline a service; Complete join atttacks TCP even if build with fall victim server ceaselessly through a lot of corpse lead plane many can bypass the examination TCP of groovy firewall joins, the resource such as the memory till the server by extinct and be procrastinated to cross, cause thereby decline a service; Brush Script script attack: This kind of attack is the TCP join with be built normal with the server, ceaseless refer inquiry, list to wait to expend database resource in great quantities to script program call, typical atttack a method greatly with small gain.

DdoS attack already made the technique with hacker seek the simplest sudden huge profits. DdoS attack is a hacker use attack software to be atttacked at the same time through much stage server it is cloggy and normal to will achieve the end that the person that use uses a service. Increasingly rampant Ddos already became the difficult problem that technical personnel has a headache most, charge time can amount to several hours of some to be as long as a few days sometimes, bring the loss that cannot estimate to website operation, also the website cannot be managed because of sufferring similar attack for a long time go down, must shut, have more very person make server or sink of whole machine ark break down. Encounter this kind of situation, the user is at a loss what to do, besides await a computer room to solve a problem besides hopeless. But because a lot of computer rooms of domestic do not have DDOS hardware firewall, can do only some remedy measure temporarily. Also some of him user buys firewall, but because bandwidth is finite, when encountering the attack that big bandwidth DDOS launchs, the network can be blocked up very quickly dead, that is to say the load of firewall hardware still is done not have how old, the bandwidth that firewall receives is extinct, final network or meeting are broken down by attack, if buy thousand class bandwidth additionally, but high price lets a person flinch again.

Be aimed at this circumstance, net of Chinese net region and Shanghai telecommunication - 3 tycoons join forces makes firewall of aegis of online electron business affairs, gold DDOS attack defends area, the DDOS launch an offensive that builds this defends area, it is the DDOS charge with Shanghai the biggest telecommunication defends at present area, its basically offer region of net of bandwidth, Shanghai to offer monitoring of trends of support of network equipment, technology, real time by Shanghai telecommunication, new software offers golden aegis firewall in, make Shanghai DDOS atttack place of safety jointly. Relative to other congener product photograph is compared, should defend area has the enough network resource that place of network operation business provides, can offer enough moving bandwidth for firewall, the Ddos with foregone much atttacks effectively complete defence. The 2GB DDOS of first phase project of this project defends the area already was checked and accept through. The 2nd period predict will enlarge look defends to 5GB, the 3rd period will defend data center is major equipment defends, defend bandwidth enlarge allows 10GB. At the appointed time, its will become Shanghai telecommunication IDC trade is the largest the safest DDOS attack defends area, determined block stops all foregone Ddos attack, provide a safety, stable network environment for broad user.

It is reported, shanghai is telegraphic - outside attack of DDOS of Gao Qiao computer room defends network, this DDOS defends of area building is business of a telegraphic operation, IDC network operation and hardware defense supplier the network safety of perfect union cooperates. The atttacks to DDOS defence capacity that increases whole Shanghai and even Hua Dong area on particular significance, reach for broad portal website, industry website enterprise or business the website provides most safe network operation environment. As we have learned, at present Shanghai telecommunication and net of Chinese net region had begun this service external at the same time.