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After Lin Hong's carefully designed "little fatty" data packet was sent, in just a few minutes, the network centers of the military regions in northern China were directly messed up, because they suddenly found that the network was suddenly disconnected, and after restarting the router, this situation still appeared, and they couldn't find any reason. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

When they kept receiving calls from their subordinate units asking about what was going on on the network, they realized that this incident did not seem to be an accidental phenomenon.

The same phenomenon has also been staged in some parts of China Telecom in northern China, and the major backbone network nodes of telecom companies have also coincidentally appeared in this situation. Many network administrators of nodes have called and asked the telecom department why the network cannot be connected all of a sudden, and is it doing some equipment upgrade work?

The customer service staff of the telecom department were also confused, and they quickly reported the situation to the technical service department of the telecom company, so that the technical engineers could find out what the problem was.

Ten minutes later, this phenomenon quickly spread from the cities in northern China to the southern cities and even neighboring countries......

China's backbone network nodes are centered on North J and radiate to several other major cities, such as Shen Y in the north, South J and Shanghai in the east, D and West A in the west, and Guangz and Wu H in the south.

In addition, there are three main export routes, namely the United Kingdom, the United States and Japan.

After the internet outage in China, the phenomenon quickly spread to these three countries, followed by the Philippines, India, South Korea, Finland, France, ...... and other countries have also seen varying degrees of network disconnection.

Data can travel at the same speed as electricity, reaching the speed of light. To spread all over the world. It's just a momentary thing, and the reason why there is a delay is because of the major gateways.

A global internet outage that broke out out out of nowhere. It happened in a very short period of time, and many people thought it was just a chance event at first. More than 80 percent of them think that there is something wrong with the router and directly restart the router equipment.

And the reason why the rest of these people don't think so is because the machinery and equipment they are responsible for are extremely stable, and they simply do not allow such a phenomenon of network disconnection without warning.

When everyone realized that this disconnection was unusual, they began to track down the main reason for this time......

……

Red Army information countermeasure machine room.

"It's strange, we can't connect to the Internet." Someone quickly discovered the anomaly.

"yes, disconnected."

Some people speculated: "Is it being attacked by the other party?" ”

"It can't seem wrong. Damn, I didn't expect them to keep a hand! ”

Everyone immediately started talking.

When Lin Hong saw this situation, he was also slightly stunned. Then a hint of surprise and a wry smile appeared on his face.

"Am I being cocooned?"

Lin Hong whispered to himself.

He already knew. The disconnection here is also caused by the data I sent to the outside world before.

His aim was to attack the Blues network. It turned around and that data came back.

However, due to the characteristics of the border gateway protocol, it will propagate a copy of these data before it is reassembled, and it will be propagated according to the IP in its routing table, which is a bit similar to broadcasting, one-to-many transmission.

This directly leads to the fact that the amount of these data, exponentially multiples, is directly spread in the network, and it is still in the form of the backbone network, these devices, after a broadcast, if it is a Cisco machine, will be directly hit, and the completion of the mission will fall into a suspended state.

Almost in a very short period of time, the Blue Army node fed back the data packets sent by Lin Hong, after all, the Blue Army Network and the Red Army Network belong to the same intranet, both in terms of physical distance and the distance between nodes in the network, they are very close.

Captain Qian rushed out of his office again.

"What's the situation?" He asked Lin Hong directly.

Lin Hong helplessly glanced at the Cisco router on the equipment shelf, and then shrugged and explained: "It's not caused by the other party's attack, but I accidentally injured our own router......"

After his explanation, Captain Qian looked at him with his mouth wide open for a long time, and then swallowed a mouthful of saliva and asked, "When will this network be restored?" ”

"Now that the network is down, I can't continue to send data to the outside world, and I should be able to recover soon. Wait for those packets that are propagating on the network to disappear automatically. Just ......"

Speaking of this, Lin Hong paused with some hesitation.

"Just what?" Captain Qian asked curiously.

"It's just that I'm not sure how big the impact of this attack is. In my judgment, this vulnerability, in Cisco routers, seems to be relatively common, that is, ......"

"In other words, this attack is likely to cause a large area of network paralysis, right?" It was Lao Wang who spoke, and he didn't know when, he had come to the two of them.

Lin Hong nodded and acquiesced to Lao Wang's statement.

"It's a big deal, it's a big deal!" Lao Wang's face showed admiration, "I didn't expect that when I cracked the file, Ling did such a beautiful thing again." ”

Lao Wang had to admit that Lin Hong was better than him.

Hearing his words, Captain Qian remembered, and he hurriedly asked, "Lao Wang, has the document been cracked?" ”

Lao Wang nodded and said lightly: "It's done." ”

Originally, this was a very happy thing, but when he learned of Lin Hong's latest results, this feeling was greatly diluted.

He had just heard that people were constantly receiving calls from subordinate units, reporting that their networks were no longer connected, that is to say, Lin Hong's attack on the blue army this time had a very big impact.

At this moment, Lao Wang is eager to know what he has done to the network before, which can cause such a large-scale network outage.

A new vulnerability?

What vulnerability can be so powerful?

Captain Qian didn't feel anything about it, he was overjoyed when he heard Lao Wang's words, and said, "Quick, pass me a copy of the document, and I will pass it to the command immediately!" ”

In his opinion, this matter was much more important than the attack made by Lin Hong.

After he got a copy of Lao Wang's document, he immediately used the bit messenger to transmit a copy to the command side.

The network outage lasted for about a quarter of an hour, and in this quarter of an hour, the network outage incident attracted great attention around the world.

It was only early in the morning at the RIPE Network Coordination Center in Amsterdam, the Netherlands, but all the technical staff of the center were called by the head of the center's department.

Monitoring data shows that in the past ten minutes, RIPE's data distribution system sent countless malicious data to the outside world, which triggered a large-scale temporary Internet outage.

The RIPE Network Coordination Center is a first-class, not-for-profit membership organization headquartered in Amsterdam, the Netherlands. Mainly responsible for Europe, Central Asia and the Middle East, it also provides Internet resource allocation, registration services and coordination activities to support global Internet operations.

In the current Internet, the world is divided into three regions, and each regional organization is responsible for the operation and management of the Internet such as the allocation of addresses in the region. One of these regional bodies is the RIPE Network Focal Point.

Every day, the RIPE Network Coordination Center handles numerous requests from IP addresses from all over the world to assign them and is responsible for forwarding the data contained therein.

And in the early hours of this morning, they received calls from all over the world protesting against their data centers, distributing malicious data and code, causing the network to be paralyzed by many important network nodes.

To this end, the director of the center urgently summoned the technical engineers who were still asleep and gave them an immediate order, asking them to thoroughly investigate what was going on and whether their center had been attacked by hackers.

The results of the investigation were quickly gathered, and the data and intelligence from all sides showed that the amount of data forwarded was not large, and the technical engineers quickly found this type of abnormal packet, and inside the center, they conducted a closed test, and the results confirmed that this type of packet has extremely powerful "destructiveness" to Cisco routers.

They further analyzed and found that this kind of packet is a well-constructed malformed packet, that is, BGP packets that have been corrupted, and they are larger than the traditional BGP routing information, so when the Cisco router is combined, there will be an abnormal situation, and then the damaged information is sent to other routers.

The main reason why this outage is so severe is that these packets are perfectly legitimate when they are first transmitted, but after they are done, they can put the Cisco router into a denial of service state.

Because Cisco routers occupy a very large proportion in the world, and the product line that can be affected by this vulnerability is very wide, as long as one router refuses service, other routers that want to connect to this router will naturally be affected, and the result can be imagined, which directly leads to a temporary network outage on the Internet.

The results of the final investigation by the security engineers revealed that the original source of the anomalous data was the country in the East.

This has inevitably given rise to various speculations from many organizations and forces.

When did that country already have such a strong computer technology force?

Does this disconnection mean that they are secretly conducting some experiments and tests?