"I'll send you the log file, you can read it yourself." Gao Wenlong didn't have much interest in speaking and sat down at the work station in disheartened.

Liu Cheng began to analyze, and after watching for a long time, he finally understood.

Before Fang Rui Technology intervened, Qiku's web games would be attacked once every month by a large-scale distributed denial of service.

The principle of the attack is that the attacker controls certain hosts to send a large number of data packets continuously, causing the server resources to be exhausted until the downtime crashes. The method is udp flood attack.

An attacker controls a large enough distributed cluster to launch an attack, with all kinds of messy packages and everything.

You don’t care about what services you are opening, nor do you have the patience to analyze what services you have, nor do you care about how many ports you open. For example, even if you don’t open any UDP service at all, it just sends a lot of UDP packets, which completely fills the bandwidth of the website.

When detecting large-scale anti-denial of service attacks, the superior access provider in the computer room will directly throw away the data packets sent by these attackers on the backbone network.

However, it will also throw away the data packets of normal users.

At this time, the traffic in Qiku's computer room was 0. I knew that I was attacking, but the attack package did not reach the computer room or the server, so the programmers were so desperate.

Qiku players will find that the web pages are getting more and more stuck, and slowly the game characters begin to drift. The first thing they fall into is some forums and comment areas, and then chat servers. They slowly lose login authentication and are kicked out of the game.

When accessing again, except for the homepage that has been statically accessed, there is nothing else to do.

Moreover, Qiku wants the superior access provider to propose to restart the package forwarding service for Qiku. This process will take up to one day.

The methods are very ruthless.

"Didn't you deploy a CDN system?" Liu Cheng asked Gao Wenlong with questions. Logically, web game companies like theirs should have this.

There are actually three fundamental ways to deal with this kind of attack that kills the master's tutor.

The first one is krypton gold. Of course, it costs more than 1 million yuan per month to buy bandwidth of more than 10G, which is not something that any company can afford.

The second method is CDN service, but when facing unethical attack methods, this kind of service can often only maintain a static homepage. As for dynamic website functions and interactions, there is no way to do so.

The third method is to filter out the attack list and block the IP directly. However, the premise of doing this is that the data packet must be sent to the computer room before the attack analysis can be performed.

However, Qiku, a superior supplier directly threw away the data packets on the backbone network, and did not go to Qiku at all. How can we find out which werewolves and which are good people from the massive attack IPs?

Gao Wenlong nodded and shook his head again. This did not fall into Liu Cheng's work scope.

He sighed: "In July last year, Tudou.com's CDN system had 500G bandwidth. Don't we have this place?"

Gao Wenlong sighed: "Yes, and it's the very advanced Azure produced by Microsoft, but what's the use?"

Liu Cheng asked bluntly: "That shouldn't be true. How could you be so vulnerable after you deploy it?"

Gao Wenlong's eyes were dull. He didn't care about Liu Cheng's offense. He was indeed just having a hard shield in his hand, but he couldn't use it well. Who could he blame?

"Let me take a look." Liu Cheng thought about it. After all, he was the first customer. With seventeen attacks a month, as long as half of them achieved their goal, Qiku would be completely cold without waiting for the New Year.

He was not just joining in the fun. He had hosted the resistance to such an attack several times. The one that impressed him the most was a large-scale attack on Aliyun platform, and Liu Cheng led his people to deal with it.

In fourteen hours, the peak of the attack reached 453.8Gb per second, and in the end he and his team survived.

While resisting the attack, Liu Cheng worked overtime for three hours in the office, and finally found the borer he was looking for between countless virtual servers and springboards.

After collecting enough evidence, the main culprit of the team had to live in for ten years, while the accomplices had been more than five years.

In this ever-changing era, I lived for ten years and felt that the sky had changed color when I came out.

Of course, those hackers who live in China, if they live abroad and enjoy the air of freedom, they can pay 100 million bail.

Before he started debugging his own software, he started debugging the other party's defense system for the sake of user experience. Two or three hours later, after several restarts, Liu Cheng finally debugged the Qiku CDN system to the point where it was useful.

It was a wilderness era, and many small configurations were very useful, but they had never seen them turn on them.

When it comes to game development, Liu Cheng is certainly not Gao Wenlong's opponent, but in terms of network security, Gao Wenlong is at least twelve years away from him.

He pressed the restart button, pulled open the computer chair and said, "Okay, when will your communication be restored? There are only two possible types of large-scale attacks. The first is malicious commercial competition."

"The development momentum of web games is now in full swing. "Dandantang" launched some time ago has reached more than 170,000 yuan in less than a month and has started to be connected with major operating platforms. What kind of "Xiaoyao Three Kingdoms" can make money, but it is a good project. Is it a competitor in the same category a mess?"

"The second type is those hacker groups extortion. Have you or your boss received ransomware emails recently? If so, you might as well call the police. Calling the police is the most effective method."

"But it can be concluded that they will never stop easily with such frequent attacks."

Gao Wenlong watched Liu Cheng tossing in the computer room for nearly three hours, sweating all over his head, handed over a bottle of water and said gratefully: "Thank you, I'm really bothering you."

"The data packet cannot reach the computer room, I can't do anything, it's just a little busy." Liu Cheng said indifferently.

If Qiku can operate normally, he can get his own money normally. If the gold mine goes bankrupt, how can he collect money?

"Great Engineer, the communications on the backbone network have been restored." A programmer ran in and reported.

Liu Cheng was silent for a moment. Many small companies applied for the recovery package forwarding to the superior network suppliers. It was not necessarily a matter of one day. They recovered in two hours.

The siblings of Shao Mingying and Shao Mingzhe have no need to think about their background, just know that they are very strong.

"You guys try it. I'll go have a meal and come here again in the afternoon." Liu Cheng carried his computer bag and left Qiku.

He promised Chen Wan that if he wanted to have lunch together, of course he would not break his promise. Qiku's life and death were not his turn, and there would be no problem.

"Sincere."

As soon as Liu Cheng opened the hotel door, he was hugged by Chen Wanruo, and the curtains in the room were pulled. She probably woke up not long after she woke up.

"Let's go for a meal." Liu Cheng looked at Chen Wanruo's neat clothes, opened the curtains, opened the windows, and ventilated the room.

"I want to eat Hangzhou Bang cuisine! I checked it. Today I want to eat Song Sao Fish Soup and Dongpo Pork. I have to eat full food! I have enough strength!" Chen Wanruo hugged Liu Cheng's waist and said with a smile.

Liu Cheng came to Yuhang several times in his previous life. Compared with the world-famous West Lake vinegar fish, Liu Cheng also likes Song Sao Fish Soup more, and their tastes are also very consistent.

"One eight-treasure tofu, one Dongpo pork, and one fish soup, it's enough to eat." Liu Cheng put down the menu and looked at Chen Wanruo, who was a little restless, and asked in confusion: "What's wrong?"

Chen Wanruo said a little awkwardly: "The stool is too hard and it feels uncomfortable to sit."

Liu Cheng was very confused. When Chen Wanruo sat on a school stool, he was not asserted... He looked at Chen Wanruo's awkward expression and instantly understood why it was like this.

He stood up, went out and found a home textile shop and bought a seat cushion. Fortunately, there was a bustling commercial street here, and everything was available.

"It's so kind of you."

Liu Cheng shook his head and said, "Aren't it all my fault?"

After eating half of the meal, the phone rings suddenly rang.
Chapter completed!