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When a network device password is lost or forgotten, the network administrator needs to find a way to retrieve or reset the password. For network devices, switch and router password recovery
Olympic Games in the world's largest sporting event.The network open Class by Cuug's gold medal OCM instructor Liu teacher. Qin, a master's degree in computer applications from Dalian University of Science and Engineering, has been engaged in Oracle for more than 7 years, and has extensive experience in database projects, such as Rockwell (Dalian) SRC, Phase-coffice, Novartis Business transfer system, software asset management system, etc.Network Ope
Zheng created in 2015/5/19 last updated on 2015/8/7 keywords:Web security, system security, web development, password recovery, password resetThis document applies to people: a broad-based technical staff outline:
the fortress was breached from within.
The fearless of employees ' ignorance
Operational Configuration Exposure details
no
There are many reasons that may result in the loss of user passwords, which may not be a problem for the system administrator. You only need to log on with the Root account and use the Passwd command to change the user password. But what if the Root password is lost? Is there no way to reinstall the system? This not only takes time and effort, but also may cause loss of important data and damage to applicat
In daily network management or maintenance, you may encounter two situations:
The Administrator forgets the password of the device and cannot debug the settings.
When I first arrived at a company responsible for the network, the former Administrator did not leave the company's device password and could n
Network is inseparable from the password, as a network administrator to remember more than one router password, if the router password forgotten, we need to set up a router to restore the password.
Router
for 12 s until the router is started, and then change the default value of the Super Terminal bit, the communication baud rate is set to 9600, the data bit is 8, the parity bit is 1, and the stop bit is 1. After the connection is reconnected, you can see from the terminal that it is in the ROM status. Note: When the baud rate is 1200, NO content is displayed on the terminal. This method is applicable to vrouters 2500, 2600, And 4500.
8 conclusion
As a layer-3 device, a router is a
values
0x2142: Starting from flash, but not using the configuration file in NVRAM (for password recovery)
0X2101: Booting from boot RAM, applied to update system files
0x2141: Starting from boot RAM, but not using the configuration file in NVRAM
Where the third digit of the C bit is 1, the break key is turned off, whereas the break key is turned on.
0x141: Closes the break key, does not use the config
options:
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If the password is not encrypted, directly with more Nvram:startup-config command can see the password, in password encrypted case, cannot see, can only modify, enter the command as follows:
Router # Configure Memory
Router
With the rapid development of broadband technology, home network access to broadband has been very common, most readers are ADSL or other ways to connect their home network to the Internet. But in the actual use of many readers have encountered the problem of forgetting the password, if it happens that these passwords are stored in the router configuration, how c
Cisco router is one of the widely used computer network communication devices. In daily operation, the router plays an important role in the whole system, and it is unavoidable to operate it frequently. For example:
Modify router configuration files, diagnose network failures, and so on. Once the password is forgotten, it can cause great trouble to the job, at t
The following articles mainly tell you about the DB2 User Password modification and database backup and recovery issues, the following describes the actual operation code used in the DB2 User Password modification and Database Backup recovery operations.
The day before yesterday, I started to install the provincial tot
Number 23rd received a customer call, the Linux server can not log on, because the server is placed in China Unicom's hosting room, so can not be processed to the scene. After the network detection, the server could not ping, the server network segment gateway can ping. Beginning to think that the server managed room network problems, causing the server can not a
This article focuses on the DB2 User Password modification and the actual Database Backup recovery operations. If you are curious about the user password modification of the DB2 database and the actual Database Backup recovery operations, the following articles will provide you with more comprehensive knowledge.
The
is the switch's operating system iOS (Internet OPERATION system network operating system), Also check flash if there are no config.text configuration files, if they are loaded together, and then loaded into RAM (equivalent to the computer's memory, after the start of the work done all in this area.) )。 Note that the configuration file, which records all of our changes to the switch (the first time the switch is not configured, the switch will load a
Mentioned in the masterpiece cqcayee :]: Please kindly advise how to configure DDN in CISCO 2611, in addition, I would like to ask you how to restore a wide area network card from an old 2611 with a password), that is, return to the initial setting status. Thank you.:: My mailbox: cqcayee@sohu.com::......A:
1: ddn can encap many protocols. The configuration below is ppp (simple configuration, for reference
monitor mode2.confreg 0x2142//Change the value of the configuration register to 2142//3.reset4.copy startup-config running-config//Enter configuration mode, load configuration file over//5. Use SH run to see which passwords are configured by the router and change//6.config-register 0x2102//Change the value of the register back, press Exit to save exit//7.copy Running-config Startup-config------------------------------------------------------------------------------------------------------------
switching equipment:
Switch:boot
7, switching equipment after the start of the switch into the privileged mode, copy the configuration file into memory
switch# Copy Flash:config.old System:running-config
8. Change Password
Switch#config Terminal
Switch (config) #enable password [password]
9, Save the configuration:
Switch#write Mem
10, change back/delet
Address" Identified by "password"; Grant permission list on data name to User name @ "Client Address" Identified by "Password" with GRANT option; How is the permission list represented?All permissionsSelect,update (Name,age) How is the data name represented?* * All libraries All tablesLibrary name. * One LibraryLibrary name. Table Name one table User name: Authorization when custom to have identity, is the
renaming its configuration file.6. After the switch restartsReboot the switch into the mode switch> switch>enEnter en into privileged mode and change the previously renamed configuration file back to switch#rename flash:oldconfig.text flash:config.textTo copy a configuration file to a running file switch#copy flash:config.text system:running-configThen go to configuration mode, enter the new password switch#conf t Switch (config) #enable
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