Turing Forbidden Zone

Accompanied by a beep.

Fennel sent his invitation again: an entry to "Russian Roulette".

It wasn't until this moment that Chu Yingzong, who was sitting in the back, woke up suddenly, and asked anxiously: "Hey, hey, wait a minute! What is 'Russian Roulette'! Is that what I thought?"

Shi Ye looked back at him, and said gently, "Well, it's a game of gambling nature."

Chu Yingzong: "No way!!! People will die!!!"

"..." Shi Ye said, "It's just a metaphor."

The so-called "Russian roulette", refers to a similar form.

The two parties to the duel will have a fair duel in a similar network environment: each person uses an anonymous network of the same size, generally a total of 6 devices, one of which is selected as the host, and the other 5 are "stand-ins" for blocking and snatching.

On the host, both parties need to run the specified dynamic webpage, and regularly update the time stamp and other information, otherwise it will be deemed that the host has been "taken down", and it will fail.

Both parties simultaneously started to attack each other's network, while ensuring that their own hosts were safe.

The reason why it is called "Russian Roulette" is also very simple.

Because under the anonymous network, neither party knows which of the 6 devices is the host of the other party—just as the gunmen do not know where the only bullet is filled in the revolver.

This kind of duel compares courage, speed...and luck.

Whoever is lucky enough to find the opponent's mainframe first, and then take it down with a swift and fierce offensive, will win the final victory.

In this duel, Signale and Fennel chose a traditional Texas rule. Both sides need to maintain an initial version of Facebook and update their dynamics on it every half an hour;

The external network of both parties restricts the use of TCP/IP protocol, but does not restrict the internal network protocol;

The system restricts the use of windows series, the database restricts the use of SQLserver, but does not restrict other tools;

No outside help is allowed, only one zombie device (commonly known as "broiler") can be used as a springboard;

……

The roulette officially opened at 3 o'clock in the middle of the night, and they had enough time to familiarize themselves with their network before that.

Shi Ye roughly browsed the rules, and he is familiar with these rules, but he has never made a bet with anyone else.

After he finished reading, he only heard Chu Yingzong behind him say again: "Wait, your hand..."

Shi Ye was injured by Barry on his right arm. The doctor said that the wound was not serious, but he had to rest well and not strenuously exercise, otherwise it might damage the nerve.

But just after a series of login operations just now, the bandages were faintly stained with blood.

Chu Yingzong gently grabbed Shi Ye's arm, signaling him not to be brave.

Even if it is not the status of the world's number one hacker, just for an ordinary engineer... the importance of the right hand is no different from half a career.

Shi Ye said lightly: "Yes. Next I will say, you do it."

Chu Yingzong: "..." So she was waiting for me here! ! !

He knew what Shiye wanted his help for.

——Because Shi Ye's right hand was inconvenient, he asked Chu Yingzong to do the operation instead.

Chu Yingzong was a little nervous: "Are you sure I can really do it? Will it affect your operation because of me?"

After all, this is a duel between the world's top hackers.

Shi Ye didn't think about it that much, and just said lightly: "Yes."

Chu Yingzong: "..." Well, as expected of you!

I don't know why, but such a long-lost word "um" made Chu Yingzong forget her nervousness.

He just felt really angry!

After a while, Chu Yingzong moved her seat forward and officially sat in front of the computer.

Instead, Shi Ye took half a step back, stood behind Chu Yingzong, looked directly at the flickering screen, and said to him, "Before deploying the offensive tools, I need your help to arrange the defensive system."

Chu Yingzong was very nervous: "What do I need to do?"

Shi Ye said: "Build an onion network to hide our hosts."

"Ah... I know this." Chu Ying tried her best to recall.

The relevant knowledge of "onion network" will not be involved in all undergraduate study courses, but for a curious person, this is a necessary foundation for cool legends about hackers and the dark web.

The so-called "onion network" is an anonymous protocol developed according to a mix theory of Chaum.

For example, in an onion network of six devices, when the host wants to transmit a message, it first encrypts and establishes communication with (randomly selected) No. 1, and then No. 1 randomly selects No. 2 to establish. The No. 2 machine establishes communication with the No. 3 machine, and the No. 3 machine finally communicates with the outside world to transmit the message of the host.

A layer of encryption is performed between each communication to ensure process security——

Even if the attacker invades the No. 2 machine, what he gets is only the second-layer encrypted data given to it by the No. 1 machine.

This makes it impossible to implement "third-party attacks" (MITM).

Therefore, for an onion network, as long as all the communicating nodes are not compromised at the same time, the host is still safe.

For Shi Ye, this "Russian roulette" is like a war on the sand table. The two sides control 6 barracks to compete with each other.

The "onion network" established in the early stage is equivalent to the establishment of an encrypted communication system to ensure that the communication between the six barracks will not be eavesdropped by the other party.

Considering this, the electronic wind seems to have caught his eyes.

but……

He couldn't explain to Chu Yingzong like this.

His silly senior couldn't see such a world, couldn't see his sand table.

There was only one little duck sitting on top of Chu Yingzong's head, staring blankly at him.

Can't go back to his electronic world... so let's just stay in the real world.

Shi Ye: "Oh."

Hearing the sigh, Chu Yingzong seemed to have been electrocuted, and looked back at him nervously: "Don't... Is there anything wrong with what I did?"

"No." Shi Ye said, "Just follow the standard onion protocol."

Chu Ying asked: "Then why are you sighing?"

Shi Ye thought for a while and said, "Sleepy."

Chu Yingzong: "Be serious with me!!! Do you need me to pat your thighs to stay awake!"

Hearing his hair blowing, a slight smile flashed in Shi Ye's eyes, and he didn't continue to answer the conversation, but said: "Continue, restrict all the half-open ports of the host."

Sure enough, after listening to his instructions, Chu Yingzong immediately began to concentrate on the operation again.

For a server that normally runs a social networking site, a total of 65535 network ports must be mostly open, which is due to the communication needs of commercial considerations.

But now they are conducting a personal duel, so as long as it does not affect the operation of the website, all unnecessary ports will be closed, which can greatly improve security!

After all, the more ports, the more potential vulnerabilities—the more paths you can sneak into the barracks.

After the ports are closed one by one, it is equivalent to the barracks officially closing the gate, building a fence, and entering a state of preparation for war.

It is already 2:30 in the night, and the duel will officially start after 30 minutes, and there will be no end to death.

On the social networking sites of both parties, the first news has been refreshed.

[Fennel: Are you ready?I can't wait :)]

[Signale: Hmm. 】

[Fennel:? 】

Fennel, who doesn't understand Chinese, felt question marks all over his head when he saw the word "en".

In the following time, Chu Ying was so nervous that she began to shake her legs.

Listening to Shi Ye's instructions, they checked this early version of Facebook from the background—it was really early, it was just a prototype written by Mark when he was in school, and there were many loopholes!

Shi Ye roughly looked at the structure, and directly announced: "Give up the defense from the website."

Chu Yingzong: "Huh? Is it really okay to just give up?"

Shi Ye: "It's hopeless."

Chu Yingzong: "..." Okay, keep it short and to the point.

The facts are indeed as Shi Ye said.

At 3:00 in the evening, the Russian roulette officially started, and they all sent out the second post at the same time.

[Fennel: [picture of bowing]]

[Signale: Come on. 】

In the first minute, they first began to try to invade each other's social networking sites together.

Shi Ye notified Chu Yingzong: "First forge the webpage parameters and do session hijacking."

Chu Yingzong: "Which parameter should we start with?"

Shi Ye looked at it and said, "The ST parameter."

This is entirely a matter of experience.

For a similar URL, there are parameters such as "novelid" and "chapterid" in it, and what they represent is generally known only to programmers.

When outsiders see it for the first time, if there are many parameters, they can only guess based on experience.

Shiye's experience and luck are good, and he guessed it right the first time: the ST parameter is the session token of this website.

楚英纵看他们的当前token是数字“1002”，就有点无语了，说：“不会吧……马克同学难道是按照1、2、3、4这样排下来的吗？都不加密一下的吗？”

Shi Ye said, "Try it and you'll know."

Chu Yingzong tried to directly change the URL from [...ST=1002&...] to [ST=1001], and then refreshed the page.

Bingo!

His webpage suddenly became another person's backstage - Fennel's backstage!

"..."

Chu Yingzong was silent for a while, then said: "...I suddenly feel that Zuckerberg's status in my heart has declined."

Shi Ye smiled and said, "You can't expect college students to take security into consideration when they first start a business and make a website."

In fact, until now, many experienced Internet companies will forget about network security and go directly to commercial value.

For example, a very large female-oriented online literature website has reached the 0202s and still uses the ancient "