• 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.
  
  
• TripWireIntrusion 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.
  
  
  
  
• 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.
  
  
• 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.
  
  
• Samba File & Print Server
  Samba is an open source suite of applications that provides file and print services to SMB/CIFS clients. Guardian Digital Internet Acceleration and Management Server utilizes many of the components of Samba to offer inter-office connectivity with seamless file and print sharing capabilities.
  
  
  
  
• Squid Caching Server
  Squid is a robust open source proxy caching server employed by Guardian Digital Internet Acceleration and Management Server to provide enhance the speed and security of accessing Internet resources.
  
  
  
  
• Amavisd Virus Scanner
  An open source virus scanner, Guardian Digital implemented Amavisd to work seamlessly with Sophos anti-virus system providing users with bulletproof security from virus threats.
  
  
  
  
• SpamAssassin Anti-spam Application
  SpamAssassin is a highly respected open source project which uses it uses a wide range of heuristic tests on mail headers and body text to identify unsolicited commercial email. Utilizing a number of spam identification tactics, SpamAssassin along with other innovative spam combating components of Secure Mail Suite determines, with pinpoint precision, whether incoming messages are legitimate or unsolicited mail.