Stunnel is a program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, NNTP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Windows binaries available here.
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Prelude is a Network Intrusion Detection system which captures packets and performs data analysis and reporting. Important and current features of Prelude include an IP defragmentation stack and detection plugins with persistent state.
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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.
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The Linux Port/Socket Pseudo ACLs project is a patch to Linux kernel v2.4 which allows the admin to delegate privileges for some protected network resources to non-root users. The ACLs are generally used to run untrusted or insecure applications as an unprivileged process, thereby lessening the impact of some undiscovered denial of service or root compromise. The ACLs can cover protected ports, raw sockets, and packet sockets.
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Snort-rep is a Snort reporting tool that can produce text or HTML output from a syslog snort log file. It is intended to be used for daily e-mail reports to the system administrators. If snort v1.8+ is used, all reports contain priority information, and the HTML output contains direct links to the IDS descriptions of whitehats.com.
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