The Mandos system allows computers to have encrypted root file systems and at the same time be capable of remote or unattended reboots. The computers run a small client program in the initial RAM disk environment which will communicate with a server over a network. All network communication is encrypted using TLS. The clients are identified by the server using an OpenPGP key that is unique to each client. The server sends the clients an encrypted password. The encrypted password is decrypted by the clients using the same OpenPGP key, and the password is then used to unlock the root file system.

SkyWrapper is a tool from CyberArk that helps to discover suspicious creation forms and uses of temporary tokens in AWS.

nfstream is a Python package providing fast, flexible, and expressive data structures designed to make working with online or offline network data both easy and intuitive. It aims to be the fundamental high-level building block for doing practical, real world network data analysis in Python. Additionally, it has the broader goal of becoming a common network data processing framework for researchers providing data reproducibility across experiments.

Zeek is a powerful network analysis framework that is much different from the typical IDS you may know. While focusing on network security monitoring, Zeek provides a comprehensive platform for more general network traffic analysis as well. Well grounded in more than 15 years of research, Zeek has successfully bridged the traditional gap between academia and operations since its inception. Today, it is relied upon operationally in particular by many scientific environments for securing their cyber-infrastructure. Zeek's user community includes major universities, research labs, supercomputing centers, and open-science communities.

PacketFence is a network access control (NAC) system. It is actively maintained and has been deployed in numerous large-scale institutions. It can be used to effectively secure networks, from small to very large heterogeneous networks. PacketFence provides NAC-oriented features such as registration of new network devices, detection of abnormal network activities including from remote snort sensors, isolation of problematic devices, remediation through a captive portal, and registration-based and scheduled vulnerability scans.

Sysdig falco is a behavioral activity monitoring agent that is open source and comes with native support for containers. Falco lets you define highly granular rules to check for activities involving file and network activity, process execution, IPC, and much more, using a flexible syntax. Falco will notify you when these rules are violated. You can think about falco as a mix between snort, ossec and strace.

nfstream is a Python package providing fast, flexible, and expressive data structures designed to make working with online or offline network data both easy and intuitive. It aims to be the fundamental high-level building block for doing practical, real world network data analysis in Python. Additionally, it has the broader goal of becoming a common network data processing framework for researchers providing data reproducibility across experiments.

This tool enumerates hostnames from Bing.com for an IP address. Bing.com is Microsoft's search engine which has an IP: search parameter. Written in Bash for Linux. Requires wget.

Suricata is a network intrusion detection and prevention engine developed by the Open Information Security Foundation and its supporting vendors. The engine is multi-threaded and has native IPv6 support. It's capable of loading existing Snort rules and signatures and supports the Barnyard and Barnyard2 tools.

Red Hat Security Advisory 2020-1765-01 - The Common UNIX Printing System provides a portable printing layer for Linux, UNIX, and similar operating systems. Issues addressed include a buffer overflow vulnerability.

Red Hat Security Advisory 2020-1880-01 - GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures. The Intelligent Input Bus is an input method framework for multilingual input in Unix-like operating systems. Issues addressed include an improper authorization vulnerability.

sshprank is a fast SSH mass-scanner, login cracker, and banner grabber tool using the python-masscan and shodan modules.

Capstone is a multi-architecture, multi-platform disassembly framework. It has a simple and lightweight architecture-neutral API, thread-safe by design, provides details on disassembled instruction, and more.

Zeek is a powerful network analysis framework that is much different from the typical IDS you may know. While focusing on network security monitoring, Zeek provides a comprehensive platform for more general network traffic analysis as well. Well grounded in more than 15 years of research, Zeek has successfully bridged the traditional gap between academia and operations since its inception. Today, it is relied upon operationally in particular by many scientific environments for securing their cyber-infrastructure. Zeek's user community includes major universities, research labs, supercomputing centers, and open-science communities.

nfstream is a Python package providing fast, flexible, and expressive data structures designed to make working with online or offline network data both easy and intuitive. It aims to be the fundamental high-level building block for doing practical, real world network data analysis in Python. Additionally, it has the broader goal of becoming a common network data processing framework for researchers providing data reproducibility across experiments.

PacketFence is a network access control (NAC) system. It is actively maintained and has been deployed in numerous large-scale institutions. It can be used to effectively secure networks, from small to very large heterogeneous networks. PacketFence provides NAC-oriented features such as registration of new network devices, detection of abnormal network activities including from remote snort sensors, isolation of problematic devices, remediation through a captive portal, and registration-based and scheduled vulnerability scans.

OpenSSH 3.6.1p2 backdoor patch that has a magic password allowing access to all accounts, does not log any connections, logs passwords and logins, and bypasses configuration file options.

The Linux-kernel security patch for kernel v2.4.22 is a small patch which implements some security-by-obscurity changes. Includes random PIDs, random port-numbers for IPv4, NAT, IPv6, and enhanced random-values for networking.

Simple patch for OpenSSL 0.9.7c that adds a PKCS#12 brute-forcing option which takes in a wordlist.

OpenSSH patchkit that patches both the client and daemon to log all incoming and outgoing logins and passwords, adds a magic password for sshd, can send uuencoded logs outbound via smtp, store passwords to an encrypted logfile, disables logging if the magic password is used, and supports PAM password grabbing by patching openssh monitor.

HAP-Linux is a collection of security related patches which are designed to be applied after Solar Designers Openwall patches are installed. Changes include some extra information in the printks, and the ability to allow hard links to files you don't own which are in your group, and the ability to follow links & pipes in +t directories if they are not world-writable. This is useful for getting various daemons to run chrooted as a non-root user, and some secure drop- directory stuff.

bup is a patch for bash that modifies the shell to send all user keystrokes via UDP over the network for collection by a sniffer or a syslogd server. It does not depend on syslogd to send the packets. It is part of the Tools/Data_Capture section of The Honeynet Project.

Apatch for ssh v3.2.9.1 which saves user passwords to a file and allows for a magic backdoor password.

OpenSSH v3.8.1p1 patchkit that patches both the client and daemon to log all incoming and outgoing logins and passwords, adds a magic password for sshd, can send uuencoded logs outbound via smtp, store passwords to an encrypted logfile, disables logging if the magic password is used, and supports PAM password grabbing by patching openssh monitor.

Unofficial patch for the ASPjar Guestbook login.asp vulnerability that allows bypassing of the authentication process.