• OpenLDAP Directory Service
  The OpenLDAP Project is a collaborative effort to develop a robust, commercial-grade, fully featured and open source LDAP suite of applications and development tools. Guardian Digital uses pieces of the OpenLDAP project to provide its customers with the ability to access directory services from any client.
  
  
  
  
• Linux Kernel Version 2.4
  The Linux Kernel handles the basic functions of all Linux operating systems including memory allocation, process allocation, device input and output, etc. Guardian Digital utilizes the latest stabilized Linux kernel in all solutions.
  
  
  
  
• TripWire Intrusion Detection
  Tripwire is an industry-standard open source intrusion detection tool. Guardian Digital implements the merits of the TripWire project to ensure consistent security from intruders and provide system integrity assurance, policy compliance and more.
  
  
  
  
• OpenSSH Encryption Utilities
  The OpenSSH project provides secure shell implementation to secure network connectivity. Relying on OpenSSH, among other security applications, to encrypt all Internet and network traffic (including passwords), authenticate users and provide secure tunneling capabilities, Guardian Digital security solutions effectively eliminate eavesdropping, connection hijacking, and other common Internet threats.
  
  
  
• MySQL Database Engine
  The MySQL project provides the open source community with a very fast, reliable database engine. As a main component to the EnGarde operating platform, Guardian Digital utilizes MySQL for its powerful performance, uncanny reliability, flexible and resilient architecture and cross platform support.
  
  
• Snort Intrusion Detection System
  Snort is an open source network intrusion detection system, capable of performing real-time traffic analysis and packet logging on IP networks. An integral security component to many of Guardian Digital's award-winning security solutions, Snort utilizes protocol analysis functions, content searching/matching applications to proactively detect both common and uncommon Internet attacks such as buffer overflows, stealth port scans, CGI attacks, OS fingerprinting attempts, and much more.
  
  
• PHP Scripting Language
  PHP is a widely-used general-purpose scripting language. Guardian Digital solutions implement the merits of PHP for Web development and to generate dynamic web content.
  
  
  
  
• Perl Programming Language
  Perl is an open source cross platform programming language. Guardian Digital utilizes perl in many of its applications due to its wide acceptance, ability to effectively handle mission-critical projects, its text manipulation capabilities and rapid development cycle.
  
  
  
  
• OpenSSL Web Server Encryption Utilities
  The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit. Utilizing OpenSSL, Guardian Digital is able to implement the protection of Secure Sockets Layer and Transport Layer Security protocols into their secure solutions.
  
  
  
  
• VSFTPD FTP Server
  The VSFTPD Project is a secure, extremely fast FTP server designed for UNIX and Linux systems. Guardian Digital chose to implement the VSFTPD structure to form a business critical application providing secure and efficient FTP capabilities.
  
  
• Postfix Mail Transport Agent
  A widely used and highly compatible sendmail program, the Postfix project provides Guardian Digital developers with the resources they need to ensure essential corporate email communications are always securely sent to the intended recipient.
  
  
  
• Apache Web Server
  Apache is a powerful, full features efficient web server and is the most widely used web server on the Internet. Guardian Digital and the Apache project teamed up to provide comprehensive web services for our customers.
  
  
  
  
• MRTG Traffic Monitor
  The Multi Router Traffic Grapher (MRTG) is an open source tool implemented throughout Guardian Digital's secure solutions to monitor the traffic load on network links allowing users to graphically observe the inner workings of their network.
  
  
  
  
• IPtables Firewall & Filtering Tools
  IPtables is an open source application which provides powerful firewalling and filtering capabilities. To enhance the security of any network, Guardian Digital uses IPtables to consistently keep corporate networks secure and free from malicious content.
  
  
• GNU Linux
  GNU is a popular open source project established to develop a complete Linux style operating system. Guardian Digital uses variants of the GNU operating system to compliment the already widely established EnGarde Secure Linux operating system