Rain is a powerful packet builder for testing the stability of hardware and software. Its features include support for all IP protocols and the ability to fully customize the packets it sends.
4e894e64dda5b93da5e8272a787b089244c18cb487c10fab349f7591f0c962c2
HTTP Filter v1.4 is a HTTP tunnel with filtering and multiplexing which sits in front of not-so-secure Web servers (like IIS), and it accepts requests, applies a set of rules to them, and allows the requests to be passed through to the back-end Web server only if they pass all filters.
82a40c9274f6f43a78ed35d6a69492b2d12dc1c909225187e8524b477c389d7f
Visual Route is a graphical traceroute, ping, and whois utility program which analyzes connectivity problems and displays the results in a table and a world map. Includes a HTML based version which allows anyone with a web browser to use it.
3739aee6b171d32166da234bec26a40835a97c305e04f5bc30b658d3b5af3f2b
The Linux Intrusion Detection System is a patch which enhances the kernel's security. When it's in effect, many system administration operations can be made impossible even for root. You can turn the security protection on or off on the fly and you can hide sensitive processes and prevent anyone from using ptrace or any other capability on your system. LIDS can also provide raw device and I/O access protection. LIDS FAQ available here.
fa73c81507fdc34e71380a4fcae9a2d014a38bdc7e2b4649acc884fd2b7340aa
Crank is short for "CRyptANalysis toolKit", and its overall purpose is to provide a powerful and extensible GUI environment for solving classical (pen-and-paper) ciphers, providing as much automation as possible. Initial focus is on the cryptanalysis of monoalphabetic substitution ciphers. Screenshot here.
36630d7f26e6683dab59202622cd1facbf29d1d9a6f9846dc57dc1a8895bb340