Liu Xiao followed the people inside, there were already technicians from the network department waiting there, and when he heard that Liu Xiao was sent by the soft alliance, he began to introduce the situation: "The company began to move back a few days ago, and the network of the entire enterprise was designed and divided by our network department according to the needs of the automated production line, which is planned in a unified way, but we do not have unified security and virus protection." Two days ago, the company's network began to be intermittent, we didn't take it seriously, thinking it was a telecommunications failure, but for the sake of insurance, we still suggested that employees install anti-virus software, and then the situation was more serious, we forced the employees' computers to install anti-virus software, but today it was ......"

The people in the network department were a little frustrated, but after installing the anti-virus software, the entire company's network was paralyzed.

"Have you checked the routers, switches and other equipment?" Liu Xiao asked.

"It's all checked, this is the equipment we bought newly, after the incident, we asked the equipment manufacturer to come and test it, and it's all normal!"

Liu Xiao said "oh", it's not a problem on the physical device, then it's basically certain that this eighty percent is caused by the ARP virus, "Is there a unified arrangement for the company's IP division?"

"No ......" the network administrator was a little embarrassed, "we are moving back to a computer to set up an IP, let him use it first, and I don't know which department's computer is finished......!"

Liu Xiao immediately sweated, he didn't expect such a big company, but he invited these few network administrators who have no experience at all, since this is already the case, it is useless to say anything else, first find out the machine infected with the ARP virus. Liu Xiao thought about it, the company's IP is so chaotic, even if he finds the IP that launched the attack, he doesn't know which computer it is.

"So be it!" Liu Xiao looked at the company-wide network structure diagram provided by the network department, "You first close the entire network of the enterprise, let the subnets of each department run independently, and then see which departments still have problems, so that the scope of our search can be smaller." ”

"Okay!" The people in the network department were anxious for a day, although they also suspected that it was caused by the ARP attack, but they could not find the machine infected with the ARP virus.

"I'm coming, I'm coming!" As soon as Liu Xiao finished speaking, Da Fei ran in, and after entering the door, he still scolded himself, "Grandma, you know that my car is not good, and you don't say wait for me, damn......! Liu Xiao, what's wrong with this company's network?"

"The network communication is blocked and paralyzed, the hardware is fine, I guess it is an ARP attack, but their company does not have a unified IP division, I want to narrow down the scope of the investigation first!" Liu Xiao replied.

"Not bad, not bad!" Da Fei laughed, it seems that this Liu Xiao is still a bit of a Taoist, "Is the scope determined?"

"Not yet!" Liu Xiao shook his head, "I just arrived here, and I'm about to disconnect them from the whole network now, and then see which subnet the problem is!"

"It's too troublesome!" Da Fei waved his hand, "You guys come back first, I have something to ask!", Da Fei called back the few technicians of the network department who were going to act.

Those technicians just opened their legs and increased their speed, and they were shouted by Da Fei, and they braked sharply, almost didn't fall, and they all looked back at Da Fei strangely, and they didn't know what was going on, but it seemed that this person was also from the soft alliance.

"Let me ask you, which department in your company has the most women?" Da Fei asked with a lewd smile.

Everyone vomited blood directly, this person came, he didn't do any work, he wanted to know where there were many women, it didn't seem to be a good bird, so no one spoke.

"Why, didn't you hear me!" Da Fei's eyes widened, and he wondered.

Everyone, you look at me, I look at you, and then someone said: "Finance Department!

"Lead the way ahead!" Da Fei glanced back at Liu Xiao, "Liu Xiao, you go to the finance department, I'll go to the business department!"

Liu Xiao understood a little at this time, what Da Fei meant was that these two departments were most likely to be infected with viruses, generally speaking, women were inferior to men in terms of computer operation, and their anti-virus awareness was also poor, and they rarely installed anti-virus software, and after being poisoned, the probability of detection was lower than that of men. With such an analysis, Da Fei's estimate is still very possible, but Da Fei was born with a lascivious face, so it's no wonder that others misunderstood.

Liu Xiao followed the technician to the finance department, and there were two switches in the box on the wall outside, which were flashing non-stop at this time, "Open and cut off the connection with the whole network!"

The technician let out an "oops", opened the box, and pulled out the thread that had been cut from the whole net.

Liu Xiao followed the technician into the finance department, at this time a large group of people were sitting in the office chatting, the company's business stagnated for a day, everyone had nothing to do, Liu Xiao as soon as they entered, those people listened to the voice, and when they saw the people clearly, they threw the conversation over, "When will the company's network return to normal?" "When will I be able to access the Internet?" "Hurry up and recover, I still have an account waiting to be transferred!" What are you, other companies said that they had remitted the arrears to us, and I was still waiting to be credited. ”

Liu Xiao suddenly felt his head buzzing, as if tens of thousands of ducks were calling, no wonder others say that a woman is equal to five hundred ducks, isn't there tens of thousands here?

"It's being solved, this is a master invited by the company, and it is estimated that it will be restored soon!" The technician was probably a little overwhelmed by the question, so he led the fire to Liu Xiao.

Liu Xiao saw that it was wrong, and quickly put his index finger to his mouth, "Shh~~", making a mysterious look. The little white-collar workers who were doing finance were suddenly dumbfounded, and they didn't know what Liu Xiao was doing.

Everyone held their breath, only to see Liu Xiao walk to a machine like the old way, first look back and forth three times, then knock and pat on the computer, and then quickly type in a few commands on the computer, look at the network data situation of the finance department at this time, and quickly withdraw from the finance department.

"Whew~" Liu Xiao let out a long sigh of relief after going out, wiped his sweat, and yelled inside: "Don't be stunned, hurry up and go to the business department!"

The two technicians inside reacted and quit the finance department in a panic.

"The subnet of the finance department is normal, and no abnormal ARP data has been found!" Liu Xiao said his conclusion, "It seems that the problem is not here! Take me to the business department to see!"

When everyone arrived at the business department, they saw that it was even more desperate, all of them were women, but they didn't make any noise, and they didn't know what Da Fei said, anyway, these salesmen stayed quietly in front of their respective computers and were busy.

Da Fei raised his head in front of a computer, "Okay, now everyone has seen a set of data, then please tell me, whose is 10.127.1.123?"

I saw a girl jumping up as if she had won the lottery, "Mine mine!"

Liu Xiao sweated profusely, his machine was poisoned, it was necessary to be so happy, he walked directly to the girl's computer, unplugged her network cable, and looked back at Da Fei, "Is there any other source?"

Da Fei smiled and shook his head, "Let's do it!"

Liu Xiao turned his head to the girl and smiled: "I'm sorry, your computer has been requisitioned temporarily, we have to test him!"

The girl reluctantly gave up her position, "I have a lot of personal things on the plane, don't peek at it!"

"No, absolutely not!" Da Fei walked over with a smile, "If you don't worry, I'll help you spy on him!", after Da Fei finished speaking, he took out his cigarette case, took out one and lit it, and said to Liu Xiao: "I'll rest first, if you can't call me!"

Liu Xiao didn't say anything, he started work directly, he pressed the shortcut key, wanted to call up the task manager to look at the system's process list, but I didn't expect to wait for two minutes, the task manager opened, and then looked down, Liu Xiao almost vomited blood, CPU usage rate 100%, not to mention memory usage, it is not an exaggeration to say that it is 300%, even the virtual memory preset by the system is about to be used up, and then look at the process list, there are more than 80 processes running at the moment.

Liu Xiao stabbed Da Fei, Da Fei looked back, the cigarette that had just been lit almost fell to the ground, I have really seen the strong, I have never seen such a strong one, and I am embarrassed to say that there are a lot of private things on the computer, just these processes, there are more than a dozen Trojan horse programs that can be identified by the naked eye alone, and there is a fart privacy at all, and people have turned your computer over tens of thousands of times.

"What's wrong?" the woman was concerned.

Da Fei finally put his cigarette back into his mouth, "Don't you think your computer usually runs very slowly?"

"Ahh I also know computers myself, so I asked the logistics to say that the computer was fake and asked them to replace it, but they didn't believe it and made me angry. ”

Da Fei's cigarette was not saved, "poof" let himself spray to the ground, twenty minutes, really convinced, if you change yourself, more than two minutes can not turn on, then the computer is estimated to be destroyed by your own humanity immediately, and it is a shame that this woman can endure it for so long. Da Fei admired it so much, this is simply the extermination master, if people have this kind of spirit, no matter what virus Trojan horse is, then they have to be afraid of her.

Liu Xiao was also petrified in front of the computer, and he didn't dare to touch the computer of the exterminating little master, but he still flew back to his senses and kicked him, before he reacted, and hurriedly began to act, disposing of all the Trojans he could judge first, because the machine reacted extremely slowly, it usually took more than half an hour to deal with things that can be handled in two minutes.

Da Fei couldn't bear it, so he led the group of technicians out and disconnected the entire network back and forth to see if there were other sources of ARP attacks.

By the time Da Fei had done everything else, Liu Xiao was almost done here, he had already found the ARP attack virus, cleared it, and then detected several other virus Trojans on the machine that exterminated Xiao Shitai, and eliminated them one by one.

"Come on!" Liu Xiao stood up and knocked on his waist, and said to the extermination master: "You try it, see if the machine is not slow." ”

Xiao Shi Tai tried it, and it was really fast, compared with the previous one, it was a snail pulling a broken car, and the other was the Chang'e moon landing spacecraft, Xiao Shi was too excited, and clicked on his computer, "It turns out that this computer is not fake!"

"Poof~", Liu Xiao, who was moving his waist, almost flashed his waist, and Mrs. Xiao still can't forget the fake computer.

Da Fei and Liu Xiao met and said to the technicians: "The source of the ARP attack has been cleared, if there is no accident, your company's network has returned to normal at this moment." But we have a few suggestions for you. ”

"Okay, good!" Those people said again and again, the key is prevention, and this problem can't be repeated in the future.

"It's mandatory to install antivirus software throughout the company, and we found a large number of Trojans on the computers where the attack came from, which may have infected other people's computers, and the ARP virus could have been thrown at you by someone through a Trojan. Da Fei paused, "Also, your company's IP must have a unified regulation, and then do a good job of VLAN division, so that even if an ARP attack breaks out in a subnet, it will not paralyze the entire company's entire network from one attack source." ”

"Yes, yes!" the men nodded again.

"The other thing is to do a good job of security, your firewall is too bad, hackers can stretch their legs casually, just like going to their own yard, why don't you use our soft alliance?" Liu Xiao absolutely can't say this.

"This ......," the men muttered, not knowing how to answer.

At this time, the party always learned that the problem had been solved, so he walked in with the shopkeeper, and he heard all of Da Fei's words, and couldn't help but be angry: "What did your network department do, didn't you tell you a long time ago, things must be used in the best? I'm taking it today, this bunch of waste hasn't figured it out for a few days, and your people just solved it every minute!

"Mr. Fang has won the award!" the shopkeeper smiled, "Since you said so, then should I call the company and ask someone to deliver the goods?"

"Okay, good!" Mr. Fang nodded again and again.

"Since we have purchased our soft alliance products, then we are naturally responsible for the end, and when the goods are delivered, our people will be responsible for debugging and installation, as well as the problem of your company's current IP chaos, we will also solve it for you. If there is a hacking incident because of our products in the future, our people will come to the door to solve it for free. ”

"Great, great!" Mr. Fang tugged at the shopkeeper's hand, "Now I can be completely at ease." ”

"By the way, your company's computer also needs to install antivirus software, although we don't do antivirus software, but we have studied these products on the market, do you want me to recommend a better one for you?"

"That's better, you're experts, I'll listen to you!" Mr. Fang's worries over the past few days were resolved, and he was naturally convinced of the Soft Alliance.

"Then I'll call and ask the antivirus software company to send someone to send a few hundred sets by the way. Well, they have another advantage of coming, that is, they will check and kill the virus on your computer for free first!"

Mr. Fang waited for the shopkeeper to finish the call, and then said, "That...... Doesn't that mean that other machines may have been hit by Trojan horses? Look at what I said......

The shopkeeper said "oh" and said with a smile: "Don't worry, after everything is delivered in a while, we will go to debug and install if we are responsible for commissioning and installation, and I will follow you to do a comprehensive test of your computer with confidential documents, do you think this will work?"

"Okay, it's all up to your arrangement!" In the event of such a big accident, Mr. Fang is always a little uneasy, in case a hacker steals the company's secrets, the loss will be huge, so this matter must be clarified, otherwise he will not even have a chance to make amends.

PS: The war between geniuses and geniuses in "Hacker Jianghu"!