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Distributions (6)
Firewalls (18)
PAM (2)
Password Auditing (1)

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BitDefender Linux Edition v.7.0 (for Workstations) - http://www.bitdefender.com/
Free effective anti-virus security solution for systems running Linux; free updates of all signature files and high scanning speed.

Central Command - Vexira Antivirus Solutions - http://www.centralcommand.com
Vexira Antivirus for Linux workstations and servers. A complete virus defense system designed for easy and dependable virus prevention on Linux systems.

Cistron RADIUS Server - http://www.radius.cistron.nl/
An authentication and accounting server for terminal servers that speak the RADIUS protocol.

Deception Toolkit - http://all.net/dtk/download.html
Performs emulation of other operating systems and vulnerabilities not found on the host; in order to deceive and solicit invalid attempts of exploitation by malicious individuals.

DeleGate - http://www.delegate.org/delegate/
An application-level gateway server.

DrawBridge - http://drawbridge.tamu.edu/
A BSD-based firewall with source included. This binaries main value is that it is perfect for beginners learning how firewalls are developed.

EPAN - Ethernet Protocol Analyzer - http://www.et-inf.fho-emden.de/~tobias/epan/
A protocol analyzer that supports ethernet, Token Ring, SLIP, PPP, ISDN, and loopback.

Etherboot - http://etherboot.org/
Free software package for booting x86 PCs over networks.

ftp://ADM.isp.at/ADM/ADMsmb-v0.2.tgz - ftp://ADM.isp.at/ADM/ADMsmb-v0.2.tgz
A network scanner that detects Microsoft Windows shares using the SMB protocol.

ftp://ftp.inr.ac.ru/ip-routing/iputils-current.tar.gz - ftp://ftp.inr.ac.ru/ip-routing/iputils-current.tar.gz
A set of network diagnostic tools, such as an enhanced replacement for traceroute.

GNUPG- Gnu Privacy Guard - http://www.gnupg.org
An open source OpenPGP compatible encryption system. Provides data integrity services for messages and data files by using digital signatures, encryption, and compression.

http://ipgrab.sourceforge.net/ - http://ipgrab.sourceforge.net/
A packet sniffing tool, based on the Berkeley packet capture library; that prints complete data-link, network, and transport layer header information for all packets it sees.

http://iptraf.seul.org/ - http://iptraf.seul.org/
IPTraf is a console-based network statistics utility that gathers TCP connection paket and byte counts, interface statistics, and activity indicators. Also captures all TCP/UDP packets.

http://mason.stearns.org/ - http://mason.stearns.org/
Tool that interactively builds a firewall using ipfwadm, ipchains, or netfilter/iptables firewalling. [GPL]

http://members.tripod.com/~robel/dni/dniadm.html - http://members.tripod.com/~robel/dni/dniadm.html
Adds the ability for a network administrator to set packet filtering rules via a web page interface. unsecure from an external source, but very easy to use for intranet management.

http://sites.inka.de/sites/bigred/devel/cipe.html - http://sites.inka.de/sites/bigred/devel/cipe.html
A Crypto IP Encapsulation project. Offers a protocol that passes encrypted packets between prearranged routers in the form of UDP packets.

http://www.bifroest.demon.co.uk/ctc/ - http://www.bifroest.demon.co.uk/ctc/
Freeware PGP, Pretty Good Privacy interoperable encryption software package. CTC is Rot13 for PGP.

http://www.freetds.org/ - http://www.freetds.org/
Free Tabular DataStream package. Tabular DataStream is a client-to-database server protocol in SyBase and Microsoft SQL database implementations.

http://www.hping.org - http://www.hping.org
A network scanner that uses spoofed source address packets. Mainly used to test firewall rules and to perform advanced TCP/IP related attacks like the idle scan.

http://www.inet.no/dante/ - http://www.inet.no/dante/
A circuit-level firewall and proxy that can be used to provide convenient and secure network connectivity to a wide range of hosts. Very similar to a SOCKS implementation.

http://www.ipv4.it/cold/ - http://www.ipv4.it/cold/
Protocol LAN analyzer that can monitor various interfaces: ISDN, PPP, Token Ring, standard: loopback, 10baseT Ethernet.

http://www.stadrin.com - http://www.stadrin.com
Strong user authentication and access control for Linux environments in a fully integrated system using PAM modules.

http://www.vergenet.net/linux/fake/ - http://www.vergenet.net/linux/fake/
Allows the user to take over the IP address of another machine in the user's LAN via ARP spoofing.

icmpquery - http://www.angio.net/security/
icmpquery is a tool for sending and receiving ICMP queries for the destinations address mask and current time.

IP Filter - TCP/IP Packet Filtering package - http://cheops.anu.edu.au/~avalon/ip-filter.html
An advanced TCP/IP packet filter suitable for use in firewall environments. Can be loaded as a module or compiled into the kernel.

ippl - IP Protocols Logger - http://pltplp.net/ippl/
Performs logging of incoming IP packets by utilizing a multi-threaded approach. Administrators can perform filtering of captured packets.

JunkBuster - http://www.internet.junkbuster.com/
Freeware for Unix/Linux/FreeBSD/OS2/BeOS/Windows 95/98/ME/NT4. Web proxy that filters banner ads, cookies, and referer tracking. Supports wafers and User-Agent spoofing.

Linux-PAM - http://kernel.secsup.org/linux/libs/pam/
Linux Pluggable Authentication Modules (PAM) is a flexible mechanism for authenticating users using alternative authentication schemes.

Razorback - http://www.intersectalliance.com/projects/RazorBack/
A log analysis program that interfaces with the SNORT open source Intrusion Detection System to provide real time visual notification when an intrusion signature has been detected on the network.

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