DNA (Deep Network Analyzer) is an open, flexible, and extensible deep network analyzer server and software architecture for passively gathering and analyzing network packets, network sessions, and applications protocols. DNA is designed to be used for Internet security, intrusion detection, network management, protocol and network analysis, information gathering, and network monitoring applications.
Devil-Linux is a special secure Linux distribution which is used for firewalls, routers, gateways, and servers. The goal of Devil-Linux is to have a small, customizable, and secure Linux system. Configuration is saved on a floppy disk or USB stick, and it has several optional packages. Devil-Linux boots from CD, but can be stored on CF cards or USB sticks.
DieHard automatically hardens software applications against a wide range of bugs. These bugs, known as memory errors, often end up as serious security vulnerabilities, cause crashes, or lead to unpredictable behavior. DieHard either eliminates these bugs altogether, or avoids them with high probability.
DFF (Digital Forensics Framework) is a simple but powerful tool with a flexible module system which will help you in your digital forensics works, including file recovery due to error or crash, evidence research and analysis, etc. DFF provides a robust architecture and some handy modules.
Diladele Web Safety is an ICAP server that integrates with an existing Squid proxy server and provides rich content and Web filtering functionality to sanitize Internet traffic passing into an internal home/enterprise network. It blocks pornography and explicit (adult) content by deep inspecting HTML content and URLs, blocks file downloads, performs filtering based on groups, controls Web usage by categories, removes annoying Web ads, and protects online privacy by disallowing access to Web trackers. It runs on any FreeBSD derived platform, RedHat, CentOS, Debian, and Ubuntu Linux, Raspberry PI, and Apple OS X, providing a comprehensive Web filtering solution easily manageable via a Web UI.
Dar is a shell command that makes backup of a directory tree and files. Its features include splitting archives over several files, DVD, CD, ZIP, or floppies, compression, full or differential backups, strong encryption, proper saving and restoration of hard links, extended attributes, file forks, Door inodes, and sparse files, remote backup using pipes and external commands (such as ssh), and rearrangement of the "slices" of an existing archive. It can run commands between slices, before and after saving some defined files or directories (for a proper database backup, for example), and quickly retrieve individual files from differential and full backups. Several external GUIs exist as alternatives to its CLI interface, like kdar, DarGUI, SaraB, etc.