How to recover Pre-shared key – Cisco ASA

When you back-up the configuration, for ASA device, using command show running-config, it does not include all the config. It suppresses the Pre-shared keys from the config. example below:

tunnel-group VPNtunnel type ipsec-ra
tunnel-group VPNtunnel general-attributes
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How to reset the Cisco ASA password

Today I was working on the ASA and I found out that I don’t have a login password for it. So, to reset the ASA password I followed the following steps;

  1. Power cycle the ASA by unplugging and plugging back in the power adapter.
  2. While restarting, press ESC to enter the ROM Monitor mode. prompt should look like (rommon#0)
  3. Enter command confreg. This will show the current configuration register, which should be 0x00000001. Say NO to change prompt
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