Cisco Cisco IPS 4255 Sensor

This section describes the two ways to recover the password for appliances. It contains the following 
topics:

For 4200 series appliances, the password recovery is found in the GRUB menu, which appears during 
bootup. When the GRUB menu appears, press any key to pause the boot process. 

You must have a terminal server or direct serial connection to the appliance to use the GRUB menu to 
recover the password. 

To recover the password on appliances, follow these steps:

Reboot the appliance.

The following menu appears:

GNU GRUB version 0.94 (632K lower / 523264K upper memory)

-------------------------------------------

0: Cisco IPS

1: Cisco IPS Recovery

2: Cisco IPS Clear Password (cisco)

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    Use the ^ and v keys to select which entry is highlighted.

    Press enter to boot the selected OS, 'e' to edit the

    Commands before booting, or 'c' for a command-line.

    Highlighted entry is 0:

Press any key to pause the boot process.

Choose 

.

The password is reset to cisco. You can change the password the next time you log into the CLI.

For more information on connecting an appliance to a terminal server, refer to 

For the IPS 4240 and the IPS 4255 you can use the ROMMON to recover the password. To access the 
ROMMON CLI, reboot the sensor from a terminal server or direct connection and interrupt the boot 
process.