Copy the startup configuration file into the running configuration with the following command: ciscoasa#copy startup-config running-config Destination filename ? 10. When the appliance prompts you for a password, simply press (at this point, the password is blank): ciscoasa>enable Password: ciscoasa# 9. Enter the enable command to enter Privileged Mode. When it finishes booting, you should see a generic User Mode prompt: ciscoasa> 8. Notice that the security appliance ignores its startup configuration during the boot process. Reset the appliance with the boot command: rommon #2>boot 7. You must change the configuration register to 0x41, which tells the appliance to ignore its saved (startup) configuration upon boot: rommon #1>confreg 0x41 6. The security appliance will ask if you want to make changes to the configuration register. The current configuration register should be the default of 0x01 (it will actually display as 0x00000001). At the rommon prompt, enter the confreg command to view the current configuration register setting: rommon #0>confreg 4. You should immediately see a rommon prompt (rommon #0>).

When prompted, press Esc to interrupt the boot process and enter ROM Monitor mode. Power-cycle your security appliance by removing and re-inserting the power plug at the power strip. They are not appropriate for a Cisco PIX Firewall appliance. The following steps were designed using a Cisco ASA 5505 Security Appliance. Caution: As with all configuration procedures, these procedures should be tested in a laboratory environment prior to usage in a production environment to ensure suitability for your situation. Once you're in configuration mode, you will load the saved configuration from flash memory, change the passwords to a known value, change the configuration register value to tell the device to load its saved configuration on boot, and reload the device. Since the device ignores its saved configuration on boot, you are able to access its configuration modes without passwords. You will then interrupt the boot process and change the configuration register value to prevent the appliance from reading its stored configuration at boot. You will power-cycle your appliance by unplugging it at the power strip and plugging it back in. This procedure requires physical access to the device.

Reset cisco 5505 asa