Cisco ASA5505 密码恢复

kingbosster

　　思科官方文档说明：
　　To recover from the loss of passwords, perform the following steps:
　　Step 1 Connect to the security appliance console port by super terminal
　　Step 2 Power off the security appliance, and then power it on.
　　Step 3 During the startup messages, press the Escape key when prompted to enter ROMMON.

　　Step 4 To set the security appliance to ignore the startup configuration at>　　rommon #1> confreg ( 0x41)在ROMMON模式下改寄存值为:0x41,按BOOT重启设备）
　　The security appliance displays the current configuration register value, and asks if you want to change
　　the value:
　　Current Configuration Register: 0x00000011
　　Configuration Summary:
　　boot TFTP image, boot default image from Flash on netboot failure
　　Do you wish to change this configuration? y/n [n]:
　　Step 5 Record your current configuration register value, so you can restore it later.
　　Step 6 At the prompt, enter Y to change the value.
　　The security appliance prompts you for new values.
　　Step 7 Accept the default values for all settings, except for the “disable system configuration?” value; at that
　　prompt, enter Y.

　　Step 8>　　rommon #2> boot
　　The security appliance loads a default configuration instead of the startup configuration.
　　Step 9 Enter privileged EXEC mode by entering the following command:
　　hostname> enable
　　Step 10 When prompted for the password, press Return.
　　The password is blank.
　　Step 11 Load the startup configuration by entering the following command:
　　hostname# copy startup-config running-config
　　Step 12 Enter global configuration mode by entering the following command:
　　hostname# configure terminal
　　Step 13 Change the passwords in the configuration by entering the following commands, as necessary:
　　hostname(config)# password cisco   （配置密码）
　　hostname(config)# enable password cisco（配置enable密码）
　　hostname(config)# username name password cisco（配置用户及密码）

　　Step 14 Change the configuration register to load the startup configuration at the next>　　following command:
　　hostname(config)# config-register value （更改回寄存值为：0x11)
　　Where value is the configuration register value you noted in Step 5. 0x1 is the default configuration
　　register.
　　Step 15 Save the new passwords to the startup configuration by entering the following command:
　　hostname(config)# copy running-config startup-config（保存配置重启即可恢复密码）
　　That's a completely procedure of restoring lost password on ASA5500 security appliance.