How to Decrypt Key 7 using IOS

Everyone may experience when we don't remember the password that we put into the configuration. This is a way to decry pt it using the cisco IOS.

Example


You forgot the password for the ntp authentication part
show run | in ntp

ntp authentication-key 1 md5 120D000406060851212E3D 7

Solution
- Create key chain. 



R1(config)#key chain decryptkey
R1(config-keychain)#key 1
R1(config-keychain-key)#key-string 7  120D000406060851212E3D
R1(config-keychain-key)#

R1#sh key chain

Key-chain decryptkey:

    key 1 -- text "testmd5key"

        accept lifetime (always valid) - (always valid) [valid now]

        send lifetime (always valid) - (always valid) [valid now]