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Barracuda CloudGen Firewall

How to Use Active Recovery Technology (ART)

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With Active Recovery Technology (ART), you can perform basic system configurations and recovery operations outside the Barracuda OS. From the ART menu, you can: 

  • Reinstall the Barracuda CloudGen Firewall.
  • Test the system hardware (CPU, RAM, HDDs).
  • Retrieve system hardware information.
  • Start a basic command-line interface.
  • Change basic system configurations (hostname, management IP address, network routes).

ART is based on a very small Linux system. You can access it via the following methods:

  • SSH – Use the command line via the SSH client in Barracuda Firewall Admin or another SSH client.

When you first boot the CloudGen Firewall after installation or firmware update, you cannot access ART for 10 to 45 minutes (depending on the appliance model) while it generates the system configuration. If the process was interrupted by a reboot of the system, it needs to be started manually. Launch the buildarttree script in the /boot/art directory.

Entering the ART Menu

You can enter the ART menu while the system boots up.

  1. When the "+++press any key to enter ART+++" message is displayed on the screen, press any key on your keyboard.

  2. When prompted, press 1 to enter the ART menu.

    enter_art.png

You must enter the ART menu as root.

The ART Menu

To navigate through the ART menu options, use the arrow and Esc keys. To select options, press the Enter key. You can select any of  the following ART menu options via the console:

art_recover.jpg.png

When accessed via SSH, the ART menu additionally features a Reboot option:

art_reboot1.jpg

  • Test hard disk drive Evokes a hard disk check tool. If bad blocks are found, you can only repair the hard disk file system with the command-line interface.

  • Test CPU – Performs a load test of all available CPUs.

  • Get hardware info – Displays all system information that is stored in a hidden partition, such as the serial number, initial installation date, etc.

  • Test RAM – Evokes a RAM checking utility. The entire RAM cannot be tested because the ART OS is stored on a part of the RAM.

  • System recovery – Re-installs the system with a previously saved system configuration. For systems with a hard disk drive, an installation *.iso image and PAR file on a dedicated partition of the disk drive are used. Optionally, an *.iso image on a USB flash drive can also be used. For flash-only systems, a USB flash drive is required.

  • Configuration reset

  • Start shell

  • Reboot – Only available via SSH. Use this option instead of Exit to save your configuration changes and reboot the unit.
  • Exit  Save and exit ART. Will only reboot the unit when accessed via the serial console. When accessed via SSH, use Reboot instead.
Saving and Recovering a System Configuration with ART

It is highly recommended that you save a working configuration of the CloudGen Firewall for ART. When you recover the system with ART, this configuration will be used.

Flash-based systems like the CloudGen Firewall F-Series F10 and F10x do not have a partition that is dedicated to storing the files required for recovering the system. For these systems, you must use a USB flash drive to save and recover your system configuration with ART. On the USB flash drive, save and rename the required PAR file as box.par. Save and rename the required firmware ISO image as netfence.iso.

Recover a System Configuration with ART

If you did not save a system configuration for ART, the CloudGen Firewall will be reinstalled with the default factory settings.

  1. Enter the ART menu.

  2. Select System recovery.

    The CloudGen Firewall will be reinstalled with the firmware version that it was shipped with.

Setting Only Basic Configuration Parameters Using ART

Use this function with care. Modifying these important basic system configuration parameters is a massive operational modification and may prevent you from accessing your unit via Barracuda Firewall Admin and/or SSH.

It is possible to set a few important basic configuration parameters using the ART Basic Configuration menu. To enter this menu, perform the following steps:

  1. At the command line, enter: setip

    Note that the command is indeed spelled setip , not setup.

  2. An ART screen appears as shown in the figure below. Now, using the arrow keys and Enter, select Basic Configuration.

    basic_conf.png

  3. Modify the Hostname, Management IP, Netmask, and/or Default Gateway fields as needed, followed by pressing F3 to save the changed values.

  4. Select Reboot to reboot the unit so that the changed values become effective.

Changing the Firmware Version Used by ART

ART always uses the firmware version that is shipped with the CloudGen Firewall. After reinstalling your system with a new firmware version, you must update ART to use the same firmware version. Use the command line via the SSH client:

  1. At the command line, change to the /art directory. Enter: cd /art

  2. Upload the required firmware ISO image to the firewall.

  3. Remove the existing netfence ISO file and rename the uploaded ISO to netfence.iso

    rm -f netfence.iso && mv your-uploaded-iso-file netfence.iso
  4. Change the file permission: enter chmod 755 netfence.iso.

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