SOLDIERX.COM Nobody Can Stop Information Insemination

andLinux is a complete Ubuntu Linux system running seamlessly in Windows 2000 based systems (2000, XP, 2003, Vista, 7; 32-bit versions only). andLinux is free and will remain so.
andLinux uses coLinux as its core which is confusing for many people. coLinux is a port of the Linux kernel to Windows. Although this technology is a bit like running Linux in a virtual machine, coLinux differs itself by being more of a merger of Windows and the Linux kernel and not an emulated PC, making it more efficient. Xming is used as X server and PulseAudio as sound server.

There are two versions
KDE version, 537 MB
and
minimal / XFCE version, 200 MB (download link for this on the home page)

Excerpt from site:

"The most common use of the Olive platform is for creative and UNIX-competent hackers to learn the JUNOS CLI on a low-cost platform. It is capable of forwarding a small amount of traffic, but does not support many of the features found on real Juniper routers. Essentially the forwarding on an Olive is the same as routing traffic via your fxp0 or em0 management interface on a real Routing Engine."

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While not a Juniper FW, the above pretty much sums it up, there are some prebuilt VM's existing for folks interested in JUNOS CLI without additional hardware somewhere on the internet

There is no support. Juniper says it doesn't exist. See page for more info.

--Said all OS's since you can vm it.

This tool changes the contents of the Windows/Linux kernel while booting, everything is done virtually - without any interferences with physical system changes. So far following Windows/Linux systems were tested to work correctly with Kon-Boot (however its quite possible
other versions of listed Windows systems may be suitable as well):

Currently supported Microsoft windows systems:
+ Windows Server 2008 Standard SP2 (v.275)
+ Windows Vista Business SP0
+ Windows Vista Ultimate SP1
+ Windows Vista Ultimate SP0
+ Windows Server 2003 Enterprise
+ Windows XP
+ Windows XP SP1
+ Windows XP SP2
+ Windows XP SP3
+ Windows 7

Currently tested Linux systems:
+Gentoo 2.6.24-gentoo-r5
+Ubuntu 2.6.24.3-debug
+Debian 2.6.18-6-6861
+Fedora 2.6.25.9-76.fc9.i6862

Cygwin is the next best thing to using Linux.
I personally do not use a windows box period, work, school, or other, unless I have Cygwin installed.
It's a large download, but once you get use to using it there's no turning back.
I have actually created a condensed copy that I carry around on my flash drive.
It comes complete with most Unix/Linux commands, to include the ability to compile things on the fly with gcc, perl, etc..
It has many useful things about it, but the only way to really see the extent of them is to use it yourself unless you like reading pages of technical data to help put you to sleep at night.

FYI...Last I checked it was currently managed by RedHat.

BackTrack is a Linux-based penetration testing arsenal that aids security professionals in the ability to perform assessments in a purely native environment dedicated to hacking.

Helix is a bootable live CD. You can still boot into a customized Linux environment that includes customized linux kernels, excellent hardware detection and many applications dedicated to Incident Response and Forensics.

Helix has been modified very carefully to NOT touch the host computer in any way and it is forensically sound. Helix wil not auto mount swap space, or auto mount any attached devices. Helix also has a special Windows autorun side for Incident Response and Forensics.

Helix focuses on Incident Response & Forensics tools. It is meant to be used by individuals who have a sound understanding of Incident Response and Forensic techniques.

http://www.e-fense.com/helix/downloads.php

Slax based Wireless Live Linux CD.It has been designed to be dedicated purely to wireless auditing.

http://www.russix.com/26feb08russix.iso

The DISA Gold Disc is used to help assess security vulnerabilities and instruct its user to patch them. Its intended use is for fresh Windows installs.