Chapter 467 Password of Router

When Lin Hong heard that his opponent had a master of Shuimu University, he was not worried, but was very happy.

This shows that this exercise will become interesting.

If the other party doesn't have any level and just lay down casually, it's the most boring.

As a university in China that is currently at the forefront of research in the field of computer science, the teachers in it are naturally at a certain level. Even, some undergraduates and postgraduates have very good skills, and compared with some half-way monks, they are more professional and have a solid foundation.

In everyone's busy schedule, the exercise has begun unconsciously.

There are no exciting scenes, and there are no inspiring slogans. A war without gunpowder smoke began silently.

Because Lin Hong used his own computer, Captain Qian came to see it once. Later, he didn't see the system inside. Except for some surprise, he didn't say anything.

This exercise only stipulates the system scope of the server, but it is not said that the operating system used by individuals should also belong to these three categories.

While everyone else was busy, I checked the router used in the computer room. It is Cisco, an international brand, which has been producing routers as early as the 1980s.

The system in the router is a firmware system with simple and dedicated functions. There are basically no loopholes, as long as it is set up properly.

However, for masters, as long as there are enough technology and tools, the system in the router can also be done.

The system in the router is actually an embedded operating system that completes specific hardware-specific functions. Due to the writing of LINX, Lin Hong has a deep understanding of this area.

The system on the Cisco router is Cisco IOS, that is, InternetworkOperatingSystem, literally. It is directly the "Internet operating system". His Internet operating system is worthy of the name, because its main function is to serve the device's access to the Internet.

Is this system by Kirk, one of the founders of Cisco? Written by Lougheed. IT WAS BORN AS EARLY AS 1986, AND MANY UPGRADED VERSIONS HAVE BEEN LAUNCHED. THIS INFORMATION CAN BE SEEN DIRECTLY ON THE WEB SETTINGS INTERFACE OF THE ROUTER. AT THE SAME TIME, YOU CAN ALSO LOG IN TO THE IOS SYSTEM THROUGH TELNET AND VIEW IT WITH THE DISPLAY COMMAND.

The system has loopholes. The more complex the system is, the more loopholes may be exploited by hackers.

The reason why Cisco often maintains and upgrades IOS. In addition to adding new functions, another important reason is that new vulnerabilities are constantly being discovered and have to be upgraded and maintained.

Lin Hong connected his computer to the local area network, then checked his gateway IP, and directly entered the address of this IP into the browser. After entering, a login interface appeared in the display, prompting the user name and password.

Basically. In the system of each router, the WEB service of HTTP is turned on, and a setting interface similar to that of a website is integrated. The router can be set up directly through the browser.

This program is integrated into the firmware, and the password and user name are basically unified. If not modified, it is basically a common password and user name such as CISCO or ADMIN.

Lin Hong directly entered these two default passwords and found that they had been modified, but he did not make a low-level mistake that even the default password of the router had not been modified.

Seeing that Captain Qian happened to pass by him, Lin Hong asked, "Captain Qian, what is the password of this router? I'll go in and set it up."

Captain Qian quickly asked another soldier, but the other party was not very sure and said a few passwords. Lin Hong tried it one after another, but the results were not correct.

"Who on earth set this password?" Captain Qian was a little annoyed.

The soldier said, "Captain, this router has been here for a long time. I have changed several administrators before, and I don't know who changed them.

Captain Qian listened. I can't help but feel a little helpless.

Unexpectedly, this kind of thing happened at the beginning of the exercise. When they bought the equipment before, they only missed this, mainly because the thing was inconspicuous, and the previous one could still be used, so no one thought of this.

There are many interfaces of this router. You can't find the same specification in the base for a while, and this is a military base. If you want to buy a new one, you have to run to the city dozens of kilometers away to buy it.

The router is a very important device, and Captain Qian also knows this. If the security settings are not set up well, it is likely to be used by the other party.

"I'll ask someone to buy a new one right away." Captain Qian said.

Lin Hong looked at the router, and then shook his head and said, "No, let me reset the password."

Captain Qian was slightly stunned: "Reset the password?"

He didn't know that he could reset the password if he forgot it.

Lin Hong explained: "Routers generally have a password reset function, in order to deal with the forgotten password. The process of resetting Cisco's router is relatively complicated, and ordinary people don't know it.

Lin Hong wants to reset the password of the router... Under the propaganda of the soldier, many people put down their things and ran to the side to watch.

After Lin Hong connected his laptop to the router, he came up the simulation terminal interface in the system. The connection was soon established with the system service in the router.

He first entered a command with a real version number in it, and then recorded the value in the real register.

After completing this step, cut off the power supply and restart the router.

At the moment when the router restarted, he quickly pressed the BREAK key on the keyboard, and the command prompt appeared again on the terminal interface.

Under this command prompt, Lin Hong skillfully entered multiple commands and interacted with the system feedback information inside. After finishing these complicated settings, he pressed CTRL+Z to save and exit, and finally restarted the router again.

Finally, Lin Hong accessed it again through the browser, entered Cisco's default password, and logged in smoothly.

Everyone was stunned by his series of actions and only thought he was very powerful.

Lin Hong doesn't feel anything about this. Explain to everyone that this is just a specific step for Cisco to reset the password. Just remember it. There is no technical content.

That said, few people know this. They are basically not professionals and have no access to this content at all. At this point, they were once again compared by Lin Hong.

Lao Wang was also quite surprised by Lin Hong's extensive hunting. He had never been exposed to this kind of knowledge and details. He couldn't help but be curious about Lin Hong's identity. ( To be continued. If you like this work, you are welcome to the starting point () to vote for recommendations and monthly tickets. Your support is my greatest motivation.)