【 Weak current College 】 Cisco router username password cracking---Power By 【 China power house network 】

The day the user name password forgot, what to think of it, has been doing systems, network devices are forgotten.　　And then find a job online. The following is a configuration steps (already tested a) 1, the router Console port connected to the PC machine serial port (COM1 or COM2).　　2. start the HyperTerminal, the configuration is set to 9600 baud rate.　　8 data bits, no parity, 1 stop bit.　　3. in the ">" prompt, use the Show Version command to view the registration code (normally OX2102 or Oxl02), remember that the registration code in step 9 registration code to this restoration. 4. view the registration code, if the interrupt mask (i.e. registration codes of 4-bit 1), then reboot the router, and power on after 30 seconds, press CTRL + Break keys; if interrupts are not shielded, send a break (Cisco company provides technical manual annotated to post after 60 seconds press Berak key). 5, according to the router series, respectively, as follows: * If the router is 2000, 2500, 3000, 680 x 0-based 4000, 7000 series, IOS version 10.0 following or ">" prompt, type the following command: > o/r 0 × 42 > I * if the router is 1003, 1004, 3600, 4500, 4700, 72XX, 75XX series or "ROMMOM >" prompt, type the following command: ROMMON > confreg 0 × 42 ROMMON > reset 6, when prompted enter the configuration dialog box appears (you Would like to enter the initial confinguration dialong? [Yes]:), answer "NO" (such as accidentally enter "YES", immediately press Cter + c to exit).　　In the event of a "Press RETURN to get started!"　　When prompted, press ENTER, into the ROM mode Router > ". 7, type enable command into the status, type EXEC Router # show config view original router configuration and unencrypted port read, it is recommended that you immediately do a text backup files to avoid misoperation lost the original configuration of the router;　　then type ROUTER configuration memory, will # NVRM mode parameter table is loaded into memory. Router # 8, type configure terminal command can be configured from the configuration table identify (or overwrite) a forgotten password; change effectively finished be sure to write the NVRAM (Router # write memory (copy runing-config startup-config)), or you will lose the router configuration, and will allow override password is invalid. 9, will be found in step 3 of the registration code, typically 0 × 2102 (that is, the normal boot from Flash memory, and Maskable Interrupt), and activate all ports (all ports will be automatically closed): Router (config) # config-register 0 × 2102 Router (config) # interface × × Router (config-if) # no shutdown Router # Ctrl-Z 10, restart router: Router reload after the above steps #, i.e. you can not lose the original router configuration to find or change passwords.