Cisco ASA 5505 unable to connect with neither console cable or ASDM

Win 10.
I had to rebuild the HDD and lost the various settings. With the new rebuilt computer, I can`t access the ASA.

I can see the com port (currently COM3) in device manager which disappears when I remove the console cable. Settings are correct (9600, 8, 1, none, off).
When I use either PuTTY or TeraFirm I get a blank screen. When I hit a key, it asks for username and then password - NO hostname.

ASDM access on Https:// again asks for username and password - no access.

This ASA has been working  now for months, and still is - all that has changed is now I have no access to it.
Without at least console access I can`t do anything.

Any help would be gratefully received :-(
David RuaneAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

what kind of help do you need ?
You just need to input user and password. Have you lost them ? Default are user: cisco pwd: cisco

If you do not remember that, you will need to do a password recovery procedure, which will retain your config but let you change password.

Pete LongTechnical ConsultantCommented:
Agreed, the firewall is doing exactly what I would expect it to?
David RuaneAuthor Commented:
Thank you for you assistance. I have read the procedure re change of password but my concerns are as follows"

1. When I first set the unit up, after connecting the console cable and hitting a key, I would get "ciscoasa". I`d then hit "en"... and that would put me into the configuration profile. This is no longer happening - I am being presented with "username "and then "password"  - why would it drop the ciscoasa identifier and not put in anything else? It is not accepting the username or passwords I have written down for the unit.

2. If I try doing power on/off and the password reset and the serial cable is working ok and the unit accepting commands, then I should see the script having hit the esc key. - Will the existing commands stay in place after a password reset?

3. Now if I don`t see the commands, do I then assume the serial cable is  not working and go for another one?

Many thanks
Pete LongTechnical ConsultantCommented:
1. It's doing this because someone has enabled AAA for console sessions, like so;

aaa authentication serial console LOCAL

2. If you want to recover the password you can do so WITHOUT LOSING THE CONFIGURATION, follow my advice below;

Cisco ASA – Password Recovery / Reset

3. If you don't see any commands at all? By all means try another cable, but sometimes I find rebooting the device while console cabled in, suddenly makes the console session bust into life (obviously do this after hours or at lunchtime).


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
David RuaneAuthor Commented:
Serial cable was faulty - now replaced and everything working as it should.
Many thanks
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.