Password Recovery - Cico 7606

[ragul2005]

Hi Guys!

I have one 7606 router. i just copied the configuration where the local username and password is encrypted.

After i saved the config, i tried to login which i couldn't do...

I tried by changing the config register to 0x2142 value from the rommonitor mode and restarting the router but it again asking for username and password combination. I think this will work only for enable password. is it????

Do any one know procedure to break the local username and password combination.??????????

[mohammedmahmoud]

Hi,

You can find all cisco products password recovery procedures @ the following link:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_tech_note09186a00801746e6.shtml

regards.

[ragul2005]

Hi,

i followed the same link and i tried procedures for both 7200 and 7000 series. They specified as i mentioned. But it din't work out for local username and password recovery. It is mainly for enable password.

There is also no specific link for 7606 router(or atleat 7600 series).

[anup_bekal]

Hi

Get into the router through rommon. Then check if you have configuration as follows:

username "uname" password 0 "pass"

Add another such line with your new username and password and then try.

Regards // Anoop

[amit-singh]

Hi,

I think what's happening, is that under your line VTY configuration, you have setup a local authentication that's why its asking for username and password again. Please make sure that you dont have any other authentication method configure on the box like AAA.

Do the following :

conf t

line vty 0 4

no login local

lo password

also if you dont want to login via the localusername and password then delete the username and password from the config.

HTH,

-amit singh

[ragul2005]

Hi Amit,

once i switch on the router and connected thro. console, it is asking for username and password which i don't know. Obviously it is local username and password. To do above mentioned thing, i should login to router. is it??????????

Pls let me know how to break that local username and password.

[amit-singh]

Hi,

When you connect via console and you are prompted for username and password this shows that you console connection is also configured of local autentication.

What you do... reload the RSP Press CTRL+Break to break it to rommon.. Change the config resgister using confre 0x2142. reload the RSP and it will boot without any config.

conf t

line console 0

no login local

no password.

We have to check if there is any other authentciaion method configured or not, which is stopping us to login. Once you are up what you can can do is take the backup of the startup-config via TFTP and check the config. If you see anyother method then go ahead and dlelet that from config and then TFTP that config bakc again to the RSP and then save it to startup-config.

http://www.cisco.com/warp/public/474/pswdrec_rsp7000.shtml

Hope I made it clear.

regards,

-amit singh

[ragul2005]

Hey Amit!

This is what i done and also described to u in my first posting.

I used the same link & i tried by changing the config reg 0x2142 from rommon mode and reloaded that router but it again asking for username and password.

It is raw config and i m damn sure that there no other authentication other than local username and password.

it is not bypassing the config it seems.

[amit-singh]

Hi,

Please paste the booting sequence of the box.

Also when you are in rommon, Please paste the output of " dir bootflash: " and " set "

regards,

-amit singh