Restoring Factory Defaults to the Cisco ASA5505 Firewall via the Console
January 16th, 2007 by Anthony Curreri
If you are like me, you tend to click things just to see how they work. Sometimes they don’t work. At all. If you’ve mucked up the IP, vlan, etc settings and the Cisco ASDM can’t get into the device, it’s time for more desparate measures.
There is a button on the back of the device that says ‘Reset’. This button appears to be entirely for looks. I think will help you fix the problem as much as this button will:
Instead, you’ll need to use the Console Port!
- hook up the blue console cable to your serial port, plugging the other end into ‘Console’ port on the ASA 5505. The console port looks like a network jack, but it’s above the usb ports.
- Use hyperterminal, click Start, Programs, Accessories, Communications, Hyperterminal, create a connection on Com1 using the terminal settings:
- Bits per second: 9600
- Data bits: 8
- Parity: None
- Stop bits: 1
- Flow control: None
- After you open your connection, press enter a couple times, and you should get a prompt like: ‘ciscoasa>’, or ‘nameofyourdevice>’
- type ‘ena’
to go to enable mode. Enter the password, or just press enter if there is no password set. - type ‘config t’
- type ‘config factory-default’
- hit spacebar when the ‘more’ thing happens. You want to get back to the prompt that looks like: ‘ciscoasa(config)#’
- type ‘reload save-config noconfirm’
- make sure that the outside line is plugged into port zero, and your pc is plugged into any of the ports 1-7.
- The Cisco ASA has been reset to factory settings. DHCP is enabled on the cisco device, and it’s internal IP address is now 192.168.1.1!
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2 Responses to “Restoring Factory Defaults to the Cisco ASA5505 Firewall via the Console”
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Now, when you open the Cisco ASDM, the default username and password is to leave both fields blank.
That’s very clear and interesting. But the solution I am trying to look for is to restore the factory default as I cannot communicate my new ASA5505 in both console (Hyperterminal) and port 1-7 (ASDM). It was happened after transferring startup-configuration from old unit. Hyperterminal says the new unit lost Image. Thanks for any suggestion if you can give.