Chapter 174: A City and the World
How is the game different from reality?
Of course it's different, it's very different!
The reality is that the entire planet, with tens of thousands of cities, has a population of seven billion.
And there is only one city here, plus the suburbs, I don't know if there are 700,000 people.
In reality, there are so many cities and so dense populations that on November 26, 9102, a month and a half ago, all 4.3 billion IPv4 addresses had been allocated, and there were no more addresses to allocate to ISPs and other large network providers.
And this city in the game, Ye Han has observed it before, and there are tens of thousands of IP addresses in total, and the last two of V4 are not enough.
Of course, there shouldn't be so few access points in a city, but it's a game.
Moreover, it is not uncommon for dozens or even hundreds of terminals to access the Internet together with an IP address, and there are many ways to use the internal networking of the company's Internet café or something, or the time-sharing rental rotation of the service provider.
Otherwise, in reality, computers, mobile phones, tablets, TVs, cars, and even refrigerators, air conditioners, washing machines, and water heaters must be connected to the Internet, how can IPv4 addresses persist until 9102?
And the difference between using two bits and four bits for IPv4 is like ......
One city and the whole world!
The target may be anywhere in the world, from the point of view, in terms of space, people in Buda Chaiwil, Congo hack you, even if the people of the United States, if they are not acting in movies, it is difficult to knock on your door in a short time.
In terms of probability, the probability of winning the jackpot in the sports lottery is 1/21.42 million, and the probability of winning the jackpot in the two-color ball is 1/17.72 million...... And the probability of picking out the correct target from the global IPv4 list is more than 200 times smaller.
But the target is in a city, and in terms of space, even if there is a traffic jam, taking the subway and riding a bicycle is enough for an hour to knock on the door.
In terms of probability, the probability of picking the correct IP is three or four hundred times easier than winning the lottery jackpot.
It's not a small gap.
The previous fierce attack and defense of broilers had given Ye Han enough references.
Don't look at those boring IP addresses in the **logs, what company or individual does this IP belong to? Why was it invaded as a broiler? And why was it chosen to be a springboard?
Through the analysis of broilers, we can roughly know the invasion methods of the other party.
Through the analysis of the intrusion method, it is possible to know which computers are the easiest targets for this person.
By sequencing the connections of different targets, using the social network analysis method [Note 1], it is possible to roughly identify other infected flocks and reverse the source of infection.
It is still the same set of scientists who help the police solve the case with the help of computer programs, which is nothing more than a transfer from reality to the Internet.
This is very difficult on Earth, because there are too many targets, and it is a kind of factorial increase, just like the NPC problem mentioned earlier.
But in the game, because the total number is four or five orders of magnitude different, even the difficulty of this problem is factorial down.
In addition, Ye Han also knows some optimization algorithms......
And for scientists, completely random numbers do not exist! With his sensitivity to numbers, Ye Han also found some personality traits of the other party's springboard IP......
Crackling, stormy, completed the input of the program, in the dazzled by the crowd of NPCs, hit enter, let the computer start to sift.
It's about the same time as counting criminals, and it only takes three or five minutes before and after an IP address pops up.
Turned out to be one?
There was only one?
【……】
When the results came out, even Ye Han was taken aback.
Usually, the computer program will only filter out one target, and give each target a chance of committing a crime, which is displayed on the map as a hot spot.
There are really very few cases where only one result is given.
Looking closely, there are still other results, but the probability is too low, less than 20%, and the only result, the probability is as high as 90%, highlighted and bold according to the priority, that's it.
Ye Han was about to take a closer look at the origin of this IP, when Wang Dazhui exclaimed: "Huh? No, isn't this the IP of the second game? ”
There are a total of nine districts and nine police stations in the capital of evil, exactly one in one district.
The headquarters of the first bureau is in the central district, the fourth bureau is in the lower east district, and the second bureau is in the shore north district.
Wang Da Hammer is not the only one who recognizes this IP.
And the brain doesn't remember, can you still go into the system to check?
In the blink of an eye, the technical department was in an uproar: "The grandsons of the second bureau, this is to see our good performance, out of the limelight, and make trouble!" ”
"No wonder every time we evaluate, the second game always steps on our heads, and our feelings have been using this kind of subordinate means!"
"No, no, I have to report this matter to the director immediately!"
The NPC was filled with indignation and quickly made up the "truth" in his brain, but what instantly appeared in Ye Han's mind was another truth.
It's from Yonemura?
No wonder......
He didn't know how many people came in from Mi Village this time, but the two A's among them, as the three stars of Huaxia Village, he knew—the information he only read before entering.
I knew it before the system query, and one of them was divided into two rounds, and it happened to be the one that hackers specialized in.
But he didn't do it directly, but asked the system first.
"System, you said that it is forbidden to confront the same camp, the other party is against the rules, right?"
Scientists, the most disciplined.
If the other party doesn't violate the rules like this, then it's definitely no problem to draw a gourd by yourself.
If the other party is in violation, you don't have to do it yourself......
You say you're so smart, why are you so cautious?
You can't just go over and scrap the other side, so I can scrap you by the way......
The system muttered like this in his heart, but he also knew that it was impossible to expect Ye Han to make mistakes here.
In fact, it has no opinion on Ye Han, it has full marks in the field, and the show is so eye-catching that it is eye-catching, and it is also beneficial.
What it is most dissatisfied with is that this guy keeps jumping grades and jumps up too fast...... If the foundation is unstable, it is easy to die; And the faster it jumps, the shorter it will stay with it.
So when there is nothing to do, I like to fill in some small blocks for Ye Han, pull his hind legs, make him slower and more steady, and by the way, also add some dramatic effect.
If it doesn't move, it won't come hard.
So when the words came to his mouth, it became this virtue-
[You said that people fought against you, do you have evidence? ] 】
【╮(﹀_﹀”)╭】
Proof?
Ye Han pushed his eyes.
Usually, it is a bit difficult to find the IP of an internal group network such as a police station, and it is indeed a bit difficult to pursue it further.
The two sides are like inside and outside the house, invisible through the wall, and it is difficult to further lock them down with the previous method.
But Ye Han already knows who the target is?
The next step is to reverse verify the questions that already have answers, so is it still difficult?
Open the back door, enter the second bureau system in one fell swoop, lock the specific location of the target through monitoring, and are about to push back......
"Click!" Suddenly, the screen went black.
The power went out!
`(+﹏+)′
Writer's words –
Some concepts that are relatively unfamiliar to ordinary readers in future chapters will have [Notes], in the author's words later.
It seems, as if...... The author's words are not included in pirate sites......
This is a genuine benefit~
If there is anything you want to mark in the previous chapters, please leave a message in this chapter, and I will add it as appropriate.