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I have telnetted into a Cisco 2851 Router with 7 set users with passwords for a PPTP VPN that show in the following format when I "show running-config":

username user1 privilege 0 password 7 84HF7CJ384NF83JF2T

How would I go about keeping this user but simply changing the user's password?

Any help is greatly appreciated, thanks!

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Run this command in config mode:

username user1 privilege 0 password NewPasswordForUser

That will change their password to NewPasswordForUser

EDIT: I should mention that it is recommended to use secret instead of password for increased security on the device. i.e.:

username user1 privilege 0 secret NewPasswordForUser

Though you can't switch from password to secret without removing the user or you'll get this error:

ERROR: Can not have both a user password and a user secret.

To make the change you'll want to remove the user:

no username user1

Then readd with a secret instead:

username user1 privilege 0 secret NewPasswordForUser
  • I added some info about moving to using the secret argument instead of password. – Chris Balmer Sep 4 '15 at 14:40
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    Note: type 7 passwords are not "encrypted" (it's trivially reversible.) Any mechanism that needs to process a plaintext password (which is possible with PPTP, i.e. CHAP) won't work with a non-type 7 (or plaintext) password. – Ricky Beam Sep 4 '15 at 20:28

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