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| AVG |
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Debian GNU/Linux is a free distribution of the Linux
based operating
system. It is maintained and updated through the work of many users who
volunteer their time and effort. Along with its large selection of
prepackaged software is contains advanced package management tools that
allow for easy installation and maintenance on individual systems and
workstation clusters. Extensive pre-release testing is done to ensure
the highest degree of reliability possible, and a publicly accessible
bug tracking system provides an easy way to monitor customer feedback. |
| ClamAV |
 |
Fedora is a set of projects, sponsored by Red Hat and
guided by the
Fedora Project Board. These projects are developed by a large community
of people who strive to provide and maintain the very best in free,
open source software and standards. Fedora Core, the central Fedora
project, is an operating system and platform, based on Linux, that is
always free for anyone to use, modify, and distribute, now and forever. |
| Dsniff |
 |
This popular and
well-engineered suite by Dug Song includes many tools. dsniff,
filesnarf, mailsnarf, msgsnarf, urlsnarf, and webspy passively monitor
a network for interesting data (passwords, e-mail, files, etc.).
arpspoof, dnsspoof, and macof facilitate the interception of network
traffic normally unavailable to an attacker (e.g, due to layer-2
switching). sshmitm and webmitm implement active monkey-in-the-middle
attacks against redirected ssh and https sessions by exploiting weak
bindings in ad-hoc PKI. |
| Honeyd |
 |
Mandriva, formerly known as Mandrakesoft, is the
publisher of the popular Mandriva Linux operating system, one of the
most full-featured and easy to use Linux systems. The company offers
its enterprise, government, and educational customers a complete range
of GNU/Linux and Open Source software and related services. Mandriva
products are available in more than 120 countries. |
| Kismet |
 |
Kismet is an console (ncurses) based 802.11 layer2 wireless network
detector, sniffer, and intrusion detection system. It identifies
networks by passively sniffing (as opposed to more active tools such as
NetStumbler),
and can even decloak hidden (non-beaconing) networks if they are in
use. It can automatically detect network IP blocks by sniffing TCP,
UDP, ARP, and DHCP packets, log traffic in Wireshark/TCPDump compatible
format, and even plot detected networks and estimated ranges on
downloaded maps. |
| Nessus |
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Nessus is the best free
network vulnerability scanner available, and the best to run on UNIX at
any price. It is constantly updated, with more than 11,000 plugins for
the free (but registration and EULA-acceptance required) feed. Key
features include remote and local (authenticated) security checks, a
client/server architecture with a GTK graphical interface, and an
embedded scripting language for writing your own plugins or
understanding the existing ones. Nessus 3 is now closed source, but is
still free-of-cost unless you want the very newest plugins. |
| Netstumbler |
 |
Whether you're new to Linux or you use it daily, SUSE
Linux 10.1 delivers the features you need most for home computing and
networking. SUSE Linux also includes more than 1,000 of the world's
leading open source applications. From established solutions like
Firefox and OpenOffice.org to emerging technologies like Beagle and
Xen, these applications are a real value. You simply open the box, run
the installation program and start using Linux for everything you do.
Choose the default set of applications to get a great desktop or
customize your entire computing environment. It's truly that easy. |
| Sguil |
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Ubuntu is a free, open source operating system that
starts with the breadth of Debian and adds regular releases (every six
months), a clear focus on the user and usability (it should "Just
Work", TM) and a commitment to security updates with 18 months of
support for every release. Ubuntu ships with the latest Gnome release
as well as a selection of server and desktop software that makes for a
comfortable desktop experience off a single installation CD. |
| AirSnort |
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| STunnel |
 |
cvx |
| Wireshark |
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Wireshark
(known as Ethereal until a trademark dispute in Summer 2006) is a
fantastic open source network protocol analyzer for Unix and Windows.
It allows you to examine data from a live network or from a capture
file on disk. You can interactively browse the capture data, delving
down into just the level of packet detail you need. Wireshark has
several powerful features, including a rich display filter language and
the ability to view the reconstructed stream of a TCP session. It also
supports hundreds of protocols and media types. |
| L0phtcrack |
 |
L0phtCrack,
also known as LC5, attempts to crack Windows passwords from hashes
which it can obtain (given proper access) from stand-alone Windows
NT/2000 workstations, networked servers, primary domain controllers, or
Active Directory. In some cases it can sniff the hashes off the wire.
It also has numerous methods of generating password guesses
(dictionary, brute force, etc). |
| Knoppix |
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Knoppix
consists of a representative collection of GNU/Linux software,
automatic hardware detection, and support for many graphics cards,
sound cards, SCSI and USB devices and other peripherals. KNOPPIX can be
used as a productive Linux system for the desktop, educational CD,
rescue system, or as many nmap survey takers attest, a portable
security tool. |
| Splunk |
 |
zcvzx |
| OpenSHH |
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SSH (Secure
Shell) is the now ubiquitous program for logging into or executing
commands on a remote machine. It provides secure encrypted
communications between two untrusted hosts over an insecure network,
replacing the hideously insecure telnet/rlogin/rsh alternatives. Most
UNIX users run the open source OpenSSH server and client. Windows users
often prefer the free PuTTY client, which is also available for many
mobile devices. |
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