High Security Firewall

Comodo Memory Firewall
Free - Comodo Group

Free Comodo Memory Firewall adds another critical layer of security to home and business PC’s by monitoring for and preventing most types of buffer overflow attacks. These attacks occur when a malicious program or script addresses more data to its memory buffer than it can store. The goal of most attacks is to destabilize the system then install malware onto the victim PC in order to execute a range of attacks such as identity and data theft.

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DefencePlus
Free - SoftSphere Technologies

DefencePlus enables you to protect your system from hackers who use buffer overflow security flaws in Windows to infiltrate and take control of your computer. With DefencePlus, you will no longer fear that some unscrupulous parasite will gain access to your documents, passwords, and credit card numbers. It is continuously watching for worms like Blaster or Sasser and stops them from the outset before they compromise the integrity of your system.

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Firewall Tuneup
Free - SpeedApps Inc

Firewall Tuneup is a rule based packet filtering firewall which helps control how computers share information with other computers through the Internet or a local network. Firewall Tuneup examines information that tries to enter a computer from an outside source (i.e. the internet), and determines if the information is safe or harmful.

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Dynamic Security Agent
Free - Privacyware

Dynamic Security Agent delivers signature less, zero hour protection from known or new malware and intrusions for Windows desktops and servers. DSA continuously evaluates system processes, applications, WinAPI calls, registry and other system variables to detect, quarantine andor block potential threats. DSA incorporates anomaly detection components that baseline normal computer operation and detect unacceptable deviations from typical use.

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SoftPerfect Personal Firewall
Free - SoftPerfect Research

SoftPerfect Personal Firewall is a free network firewall designed to protect your PC against attacks from the Internet or via a local area network. It offers customizable security using user-defined rules for packet filtering. The program supports a learning mode, multiple network adapter configurations, non-IP protocol filtering and comes with a set of predefined rules. Additional features include password protection, logging and more.

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Antrasoft Secure Messenger
Free - AntraSOFT

The E-mail program for communication 100% securely. The program generates security certificates (public & private 1024 bit keys) , automatically exchanging public keys and install them into Windows to make your own personal 'circle of trust' between your partners. The program enables users to encrypt and digitally sign their e-mails or voice messages, ensuring a high level of confidentiality for your personal information.

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