Free nessus software for linux

Net::Nessus::Client is a Nessus client module.

SYNOPSIS

# Connect to the Nessus Server
require Net::Nessus::Client;
my $client = Net::Nessus::Client->new(host => localhost,
port => 1241,
user => joe,
password => my_password);

The Nessus program is a Client/Server application offering a framework for lots of security related scanners, so-called plugins. The idea is not to create a separate scanner for any possible security hole, but to reimplement only the most important parts and let the Nessus Server (nessusd) do the most part of the work.
Clients are typically available as GUI applications, for example based on the GTK (nessus), Java or Win32 applications. This module is another Nessus client written in Perl, but without GUI.

You start using the module by opening a connection to a Nessus Server: This will create a Nessus client object for you. This object offers methods that you can later use, for example retrieving the list of available plugins, start a scan, set preferences and so on.

Nessj is an application/network security scanner client for Nessus and Nessus compatible (OpenVAS, etc.) servers.

In addition to an improved user interface, Nessj provides session management with templates, report generation using XSLT including charts/graphs, and vulnerability trending

OSSIM aims to unify network monitoring, security, correlation, and qualification in one single tool. The project combines Snort, BASE, NTOP, Nagios, nmap, nessus, and rrdtool to provide the user with full control over every aspect of networking or security.
Main features:
- Arpwatch, used for mac anomaly detection.
- P0f, used for passive OS detection and os change analisys.
- Pads, used for service anomaly detection.
- Nessus, used for vulnerability assessment and for cross correlation (IDS vs Security Scanner).
- Snort, the IDS, also used for cross correlation with nessus.
- Spade, the statistical packet anomaly detection engine. Used to gain knowledge about attacks without signature.
- Tcptrack, used for session data information which can grant useful information for attack correlation.
- Ntop, which builds an impressive network information database from which we can get aberrant behaviour anomaly detection.
- Nagios. Being fed from the host asset database it monitors host and service availability information.
- Osiris, a great HIDS.
Enhancements:
- VMOSSIM is a fully working OSSIM environment packaged into a VMWare image.
- Its got most of the plugins enabled and is intended for uncomplicated and fast deployment, as well as for demonstration and testing purposes.
- It incudes a set of image management scripts not included with the main OSSIM distribution, which alleviates access to OSSIM by not-so-skilled users.

AutoScan is a utility for network exploration.
The objective of the program is to post the list of all equipment connected to the network. A list of ports preset is scanned for each equipment.
Main features:
- Automatic network discovery
- Entire subnets can be scanned simultaneously without human intervention
- Addition time-reality of the new machines put on the network
- Detection of the OS, brand and model known (Possibility to add an unknown equipment in the database)
- Ability to save the network state
- A Samba share browser
- A Nessus client
- For each machine, one can launch a script (ex:ping, nmap) and display the result
- For each port, one can launch an application (ex:rdesktop for the terminal server service)

Linux-EduCD is a Polish live DVD based on KANOTIX, with focus on education, graphics, office, multimedia and software development.
Main features:
- addition of the Compiz desktop;
- integration of GParted into the hard disk installer;
- new boot options;
- Linux kernel 2.6.18 with extra drivers and modules;
- KDE 3.5.5;
- OpenOffice.org 2.0.4;
- a range of educational software (Celestia, OpenDX, PyMOL, Rasmol, DrGeo, Yacas); multimedia applications (GIMP 2.2.13, Blender 2.42, Amarok, Audacity, Xine); network and system administration software (Wireshark, Nessus, Iptraf, EtherApe, Cheops);
- new development packages (DrScheme, Ruby, VisualPython, GPS, GNAT, Glade)

STD is a Linux-based Security Tool. Actually, it is a collection of hundreds if not thousands of open source security tools. Its a Live Linux Distro, which means it runs from a bootable CD in memory without changing the native operating system of the host computer. Its sole purpose in life is to put as many security tools at your disposal with as slick an interface as it can.
STD is meant to be used by both novice and professional security personnel but is not ideal for the Linux uninitiated. STD assumes you know the basics of Linux as most of your work will be done from the command line. If you are completely new to Linux, its best you start with another live Distro like Knoppix to practice the basics.
STD tools are divided into the following categories:
- authentication
- encryption
- forensics
- firewall
- honeypot
- ids
- network utilities
- password tools
- servers
- packet sniffers
- tcp tools
- tunnels
- vulnerability assessment
- wireless tools
Enhancements:
- Eliminated all windows managers except fluxbox
- built kernel from kernel.org 2.4.21 src. added ntfs/rw, superfreeswan and openmosix patches.
- ntfs rw is very limited. You can basically only modify existing files and only if you dont change the size. Good for making basic registry changes.
- Superfreeswan adds IPSEC support for VPNs.
- OpenMosix adds clustering support with automatic discovery of other nodes.
- Added /usr/bin/tunnels category
- Eliminated /usr/bin/pen-test category and moved tools to /usr/bin/vuln-test
- Moved some tools in /usr/bin/sniff to /usr/bin/tcp-tools
- Eliminated /usr/bin/pen-test category and moved tools to /usr/bin/vuln-test
- ACID/MySQL/Snort configured to work automatically
- update nessus plugins, clamAV signatures, and snort signatures
- If you have 640MB of RAM or more you run boot: knoppix toram and free up the CD drive
- patched orinoco driver is the default. no more patch-orinoco
- Kismet updated to 3.0.1 and is pre-configured for orinoco on eth0
- all init scripts now check the knoppix home dir before copying from the CD.This means that if youre using a persistant home dir the init scripts act as restore scripts
- blockall now allows connections from localhost so you can block all external traffic but still run nessus or ntop or kismet or.....
- added many new tools and updated all existing tools

Echelon Linux is a distro designed to monitor services on your network. Echelon Linux is based on the DamnSmallLinux project.
I started building echelonlinux last year but I stopped working on it a few month later. Today I have decided to publish a new release of echelonlinux. It is a little bit different than first one; only 3 components are available :
- Nagios Services and local ressources monitoring
- Ntop Network traffic analyser
- Nessus Remote Security Scanner
Main features:
- Apache based system
- Network monitoring with Nagios.
- Vulnerabilities scan with Nessus.