Password Recovery on Cisco router


Password Recovery, In general why some one would go for password recovery. Either user might be forgot his password or change of user. Here are basic requirements before recovering password.

  1. We need console connection to the router .
  2. Emulation software.
Procedure:
  1. After restarting the router press some keys on the keyboard on pc operating system which connected to router via console port. Special keys are different for different Operating system.                             Window Operating system:- Ctrl + Pause Break , Linux Ctrl+a, f.
  2. After press keys we are allowed to default mode of router where we have to set the register value as 0x2142. But this value option is again different for different router.
  3. Fixed Router > o/r 0x2142 and >i(restarting)
  4. Modular Router : rommon1>confreg 0x2142  and rommon2>reset.
  5. After entering into router, we should copy the information from NVRAM  to RAM
  6. Router#copy startup-config running-config
  7. After copying the information, we should give no shutdown command in all interfaces and should change console, auxilary, telnet and enable secret passwords.
  8. After changing settings copy the information from RAM to NVRAM.
  9. Router#copy running-config startup-config
  10. To set back the register value
  11. Router(config)#config-register 0x2102.
 

Comments

  1. kiteducationApril 26, 2014 at 3:45 PM

    Thanks for share this
    KIT EDUCATION is the best institute for CISCO trainings in jaipur
    we provide all types of CISCO trainings in jaipur

    ReplyDelete

Post a Comment

Popular posts from this blog

Reasoning-Number Series

Complete the following series 225,224,____,222,221 a)220         b)223         c)219           d)226 Answer: b)      2. 17,19,23,29,31,37,______     a)41               b)43         c)40           d)42    Answer: If you look at the above series they are all prime numbers, next series will be 41        3.225,196,169,____,121,100,81     a)156              b)144         c)136           d)125 Answer: above series can be written as 15^2,14^2,13^2,____,11^2,10^2,9^2. The missing series is 12^2=144.     4.12,14,15,16,18,20     a)22              b)25         c)21           d)23 Answer: consider above series into two alternate parts. Like 12,15,18,____ & 14,16,20. Then the difference of two alternate series as follows: 3,3,3___ & 2,4. Next series after 18 need to be added with 3= 18+3=21.     5.64,125,216,343,__     a)64              b)424         c)317           d)512 Answer: The above series can be written, 4^3,5^3,6^3,7^3, then the next
Read more

Reasoning-Letter Series

Question & Answers 46. abc-a--d-bcdabcd (1)d b b a        (2)d c a a        (3)a b c d     (4)d b c a 47.b-da-cda-c-abc (1)a a b b        (2)d b c a        (3)a d b c     (4)c b b d 48. a a a b -b c - - a a - (1)a b b c        (2)a c b c        (3)b a c a     (4)b c c a 49. -b a b - b c b c - c a - a b (1)a b c c         (2)a b c b        (3)a c a c     (4)a a c b 50.a b c - - c b a a - c d d c - a (1)d b d b        (2)d d b b         (3)b c a d     (4)a d b c 51.E, A _, O, I (1)E        (2)U        (3)X     (4)V 52.D , F ,G, H , J ,K , L, M , N __ (1)O        (2)Q        (3)P     (4)R 53.E, J, O , T, Y, ____ (1)D        (2)Z        (3)C     (4)E 54.G, J, N , Q, U, ____ (1)W        (2)X        (3)Y     (4)Z 55.R, K, F, C, ____ (1)Z        (2)Y        (3)W     (4)A 56. BY,CX,EV, GT, KP,____ (1)JQ        (2)MN        (3)PK     (4)LO 57.AI,EO,IU,__,UE (1)OU        (2)OI        (3)UA     (4)OA 58.AP, BQ, CR, DS, ____ (1)ET        (2)EU        (3
Read more

Multiply Negative numbers in java

For this challenge, you will be given an array and you are asked to count how many numbers are negative and multiply them and print the output to the STDOUT.  Input Format  -  you will be taking a number as an input from STDIN which tells about the length of the array. On another line, array elements should be there with single space between them.  Output Format  -  print the multiplication to the STDOUT.  Sample Test Case:   Sample Input: - 7 -8 -7 6 0 7 -1 6 Sample Output  -  -56  Explanation:   There are three negative numbers present in the array and their multiplication comes out to be -56.
Read more