Tux Watch

Here is a short list of the most popular security applications for linux. I will be updatin this with links shortly

Clam AntiVirus Popular antivirus solution for UNIX based machines. Includes real time virus scanning and a virus definition database updated several times per day.

AVScan Front-end for Clam AntiVirus.

Avast Home Edition – Antivirus suite including real time scanning, email protection, internet traffic filtering, a firewall and more.

Housecall [Web Linux – Web based scanner that detects and removes viruses, worms, trojans and spyware. Also points out system vulnerabilities and offers advice on obtaining security patches.

chkrootkit – A solution for finding and removing rootkits from Linux machines.

Firestarter – Real time firewall that monitors all of the open ports and active network connections on your computer. Allows you to specify a very strict rule set.

Firewall Builder – Useful tool for assembling a firewall rule set or policy for popular UNIX based firewalls including iptables, ipfilter, etc.

TuxGuardian – Verifies the integrity of applications trying to gain access to the network. Useful for preventing viruses, trojans, spyware, etc. from spreading throughout the network.

HardWall Firewall – Iptables based script that performs detailed packet inspection and filtering to keep your computer free from malicious traffic.

BullDog – Complex firewall for advanced users.

PeerGuardian – Blocks IPs from accessing your network. Especially useful for protecting your privacy when using peer to peer software.

Thunderbird – Highly customizable secure email client. Comes equipped with spam email filters, phishing protection and encryption capabilities.

Sagator – An interface for the postfix, sendmail and other smtpd gateways that run popular antivirus and antispam solutions.

Tiger Envelopes – Encrypts email messages. Integrates into Outlook, Thunderbird, Mac Mail and KMail.

Tor – Uses a network of virtual tunnels to provide anonymity for surfing the internet and transferring files over a network.

BarracudaDrive – Free secure web server implementation. Useful for managing files remotely.

Firefox – A fan favorite browser for it's secure architecture and available add-ons. Uses SSL browsing by default.

McAfee Site Advisor [Windows, Linux, Mac] – Rates websites by their ability to infect your computer with malware. Advises you if a site is safe or not.

Opera – Secure multi-platform web browser.

PuTTY – Telent and SSH client for running remote sessions. Main features include command line based SCP and SFTP clients. Frequently used to communicate between a Windows machine and a Unix machine.

WebCleaner – Allows you to control the type of data your proxy parses. Useful for eliminating dangerous malware and removing annoying popup ads.

SmoothWall – Firewall, IDS and VPN system for home users and networks.

Nagios – Comprehensive web based tool equipped with virtually every imaginable feature for knowing exactly what’s going on in your network.

nLive Core – Monitors the traffic that traverses your network via packet inspection and filtering.

Network Mapper – Uses packets passing through the network to find out what hosts are available, what services they’re offering, what operating system they’re running and what type of packet filtration/firewall they’re using.

Wireshark – Powerful tool for capturing network protocol data for analysis. Contains more than 25 methods for reading packets making it useful for a wide array of networks.

Nessus – Industry leading open source network vulnerability scanner. Highly scalable and very thorough.

Snort – The premier free IDS solution. Detects a wide variety of attacks including buffer overflows, OS fingerprinting, CGI scans and more. Uses real time traffic analysis and packet logging on IP networks.

Open Source Host-based Intrusion Detection System – Personal IDS performing log analysis, registry monitoring, malware detection, time-based alerting and active response.

Prelude – Detects system anomalies and reports findings to the user. Also analyzes logs for anomalies.