Change Administrator Password on 2811 Router

Answered Question
Oct 6th, 2009
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We have fired the company who supported our 2811 routers and I would like to know how to change the Administrator password so we can prevent their access while we are looking for a replacement company

Correct Answer by Reza Sharifi about 7 years 7 months ago

David,


Make sure the new one is working fine before you delete the old one.


the command to delete the old one is:

config t

no username admin


HTH

Reza

Correct Answer by Collin Clark about 7 years 7 months ago

You can reduce your risk by creating another account before deleting the admin account.


username administrator secret MyPaSsWoRd


Then create another telnet session (leave the original one open) and authenticate with the username administrator. If successful you can delete admin and re-create or just use the administrator account.

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Overall Rating: 5 (2 ratings)
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Brent Rockburn Tue, 10/06/2009 - 12:48
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How are you gaining access? SSH? Telnet? is tacacs or radius being used?


dscottsos Tue, 10/06/2009 - 13:03
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Telnet using CLI commands and I login as user admin

Collin Clark Tue, 10/06/2009 - 12:49
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Assuming you're using local authentication;


no username administrator


To create a new one-


username administrator secrete mYPaSsWoRd

dscottsos Tue, 10/06/2009 - 13:05
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I currently access the 2811 using a telnet connection and CLI commands and login as Admin which has all rights and then the system uses the same password for login and enable functions.

Collin Clark Tue, 10/06/2009 - 13:06
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no username admin


To create a new one-


username admin secrete mYPaSsWoRd

dscottsos Tue, 10/06/2009 - 13:20
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Thanks but I am not sure I understand, there is a current username admin that I use to login to the router. You are suggesting creating a new one. Is that to overwrite/replace the current user? Maybe I should wait until I find a new company and run the risk.

Collin Clark Tue, 10/06/2009 - 13:24
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First you delete the username admin. Next your creating a new admin account so you can login with that account and the new password.

Correct Answer
Collin Clark Tue, 10/06/2009 - 13:28
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You can reduce your risk by creating another account before deleting the admin account.


username administrator secret MyPaSsWoRd


Then create another telnet session (leave the original one open) and authenticate with the username administrator. If successful you can delete admin and re-create or just use the administrator account.

dscottsos Tue, 10/06/2009 - 13:33
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Thanks, I have the new username and password, what is the command to delete the old Admin username.

Correct Answer
Reza Sharifi Tue, 10/06/2009 - 13:43
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    2017 LAN

David,


Make sure the new one is working fine before you delete the old one.


the command to delete the old one is:

config t

no username admin


HTH

Reza

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