Cisco ASA: Reset password

  1. Turn off appliance
  2. Connect console cable
  3. Interrupt boot process by pressing ESC to enter ROMMON-Mode (ROM Monitor Mode):
rommon #0>
View current config
rommon #0>confreg
Change Config-Register to 0x41
rommon #1>confreg 0x41
rommon #2>boot
asa>
Change password and reload
asa> enable
asa# copy startup-config running-config
asa# configure terminal
asa(config)# enable password cisco
asa(config)# username admin password cisco
asa(config)# config-register 0x01
asa(config)# exit
asa# write memory
asa# reload

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