【转载】思科CISCO防火墙ASA5510重置密码

ASA 5510密码恢复：
1.重启防火墙出现
Use BREAK or ESC to interrupt boot.

Use SPACE to begin boot immediately.

2.进入rommon模式，然后修改寄存器

     rommon #1> confreg 
Current Configuration Register: 0x00000001-------------当前asa的寄存器值
Configuration Summary:
  boot default image from Flash
 
Do you wish to change this configuration? y/n [n]: y---------------是否改变现有配置
enable boot to ROMMON prompt? y/n [n]: y
select specific Flash image index? y/n [n]: n
disable system configuration? y/n [n]: y  --------重要----------是否关闭系统当前的配置
go to ROMMON prompt if netboot fails? y/n [n]: y
enable passing NVRAM file specs in auto-boot mode? y/n [n]: y
disable display of BREAK or ESC key prompt during auto-boot? y/n [n]: n
 
Current Configuration Register: 0x00102040---------------------修改后的寄存器值
Configuration Summary:
  boot ROMMON
  ignore system configuration
  load ROMMON if netboot fails
  pass NVRAM file specs in auto-bootloader mode
 
Update Config Register (0x102040) in NVRAM…
3.重启asa
rommon #2> boot

4.这时可 修改密码
ciscoasa>enable
Password:（密码为空）
ciscoasa#configure terminal
ciscoasa(config)#enable password XXX

5.copy 原有配置
ciscoasa(config)# copy startup-config running-config

6.寄存器立刻改回原值，然后重启。
   Rack46ASA2(config)# config-register 0x01
7.重启
   ciscoasa#reload