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  • Cisco ASA: Password recovery

    Design & Configure

    Cisco ASA: Password recovery

    Technology: Network Security
    Area: Firewalls
    Vendor: Cisco
    Software: 8.X, 9.X
    Platform: Cisco ASA


    ASA migration options


    To recover ASA password or just erase the old config if password is not known:

    • Connect to the ASA console port
    • Power off the ASA, and then power it on.
    • After startup, press the Escape key when you are prompted to enter ROMMON
    • To update the configuration register value,

    Enter the following command:

    rommon #1> confreg 0x41


    To boot with fresh config:

    rommon #2> boot


    TIP: you can use clear configure commands set to quickly clear part of ASA configuration. Example of clearing the names:

    ASA#conf t
    ASA(config)#clear configure name


    Author: Marcin Bialy