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Title: FireballISO  
Author: World Heritage Encyclopedia
Language: English
Subject: Gentoo Linux, List of live CDs
Publisher: World Heritage Encyclopedia


Company / developer Indy
OS family Unix-like
Working state Active
Source model Open source
Kernel type Monolithic kernel
License Same as Gentoo Linux
Official website

FireballISO (or "Fireball") is a VMware virtual appliance that builds a security-hardened Live CD containing a stripped-down custom version of Gentoo Linux. The original intent of the project is focused on providing firewall and networking services to a network, but the appliance can be customized in almost limitless ways to build bootable ISOs that can do many different things. When burned to a CD-ROM, it will allow a perhaps otherwise unused, old computer to boot it and act as a network security device. It may also be used in a virtual environment as a secure cloud appliance. Notable features in the generated ISO include:

  • (Version 1.3) Except for the files required early in the boot process (such as the kernel and initramfs), the contents can now be optionally encrypted, which makes it much more difficult and time-consiming for someone that may steal the ISO to access the contents. Default encryption is 256-bit documentation for issues related to encryption.
  • (Version 1.2) All programs updated and recompiled with Hardened Gentoo kernel and compiler toolchain, resulting in increased protection from several kinds of overflows and other security vulnerabilities.
  • IPv4 and IPv6 support
  • tunneled IPv6 access and public IPv6 addresses for entire internal network to the Internet - uses a free account with gogoNET or another tunnel broker
  • iptables and ip6tables firewalls
  • SSH server for full command-line access
  • DNS cache and DHCP server
  • tcpdump & other networking utilities
  • Perl and Python scripting languages
  • NTP client
  • DSL support
  • Extremely customizable, just like a regular Gentoo Linux system
  • Unnecessary programs removed from generated ISO, resulting in small size (about 80 - 90 MB).
  • Low hardware requirements for ISO: Pentium computer with a CD-ROM drive capable of booting, and two network interface cards, or equivalent virtual environment. No hard disk, monitor, or keyboard is needed for the unencrypted configuration (though a monitor and keyboard might be useful for troubleshooting configurations as needed). A keyboard and monitor are required at startup if encryption is used.

The virtual appliance can be updated just like a normal Gentoo system, allowing new Live CD images to be generated with the latest security fixes, bug corrections, additional features, and updated configurations. The Live CD should be re-generated as often as important changes are released by the authors of the various software packages it contains.

Release history

  • Fireball Release 1 - March 3, 2009
  • Fireball Release 1.1 - June 22, 2009
  • Fireball Release 1.2 - December 30, 2010
  • Fireball Release 1.3 - January 13, 2012

External links

  • FireballISO website - visit here for documentation
  • FireballISO project page - download location and discussion forums
  • HOWTO build a LiveCD from scratch
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