Open-source alternatives to Blocklist Ipsets

This project is a Rack middleware rate limiter and application layer firewall for Ruby web applications. It serves as a security layer to throttle and block HTTP requests based on custom rules, protecting web servers from abusive traffic. The system provides capabilities for IP blocking and the banning of malicious clients. It implements request safelisting to bypass restrictions for trusted users and uses time-windowed rate limiting to control request frequency. The middleware covers traffic management and monitoring, including the ability to track request patterns and instrument traffic ev

Rack-attack is a middleware rate limiter and request filter for the Rack interface. It provides a system for throttling HTTP requests and maintaining IP address blocklists to protect applications from malicious traffic and denial-of-service attacks. The project enables application layer DDoS mitigation and API rate limit management by identifying and rejecting requests from banned clients or abusive IP addresses. It allows for the definition of safelists to bypass filters and uses custom logic to determine if a client should be blocked or throttled. The tool covers comprehensive traffic mana

This project is a Python command-line security tool and malware analysis framework designed for threat intelligence aggregation and incident triage. It functions as an aggregator that orchestrates queries across multiple security services and sandboxes to analyze hashes, IP addresses, and domains. The tool distinguishes itself by incorporating an intelligence layer that uses language models to provide automated risk assessments and framework mappings. It also includes specialized capabilities for extracting indicators of compromise from unstructured text, documents, and web pages, as well as

Surge is a network traffic routing and configuration system designed to categorize and steer network requests using curated rule sets, domain lists, and IP databases. It provides the data structures and filtering logic necessary to manage how application traffic is directed across proxies, direct connections, or regional gateways. The project distinguishes itself through granular traffic identification and steering. It identifies network requests by matching them against system process names, user-agent strings, and geographic IP ranges to apply specific routing policies. This allows for the

ngxluawaf is an OpenResty web application firewall that uses Lua to filter malicious HTTP requests and block web attacks. It operates as a programmable request filter and IP access controller for Nginx, providing a security layer to identify and block unauthorized scanners, fuzzing attempts, and abnormal network requests. The project includes capabilities for HTTP layer 7 DDoS mitigation by restricting request frequency per IP address. It further secures the environment by restricting access to sensitive archives and blocking script execution in upload directories to prevent data leakage.

FastNetMon is a network traffic analyzer and DDoS detection system designed to identify and mitigate distributed denial of service attacks. It functions as a BGP blackhole controller and mitigation orchestrator, monitoring network traffic in real time to detect hosts that exceed predefined thresholds for packets, bytes, or flows per second. The system distinguishes itself through automated mitigation capabilities, using BGP-based route announcements to block malicious IP addresses across network infrastructure. It supports hardware-specific interventions for vendors such as Juniper and MikroT

TheHive is a security incident response platform and multi-tenant case management system. It functions as a Security Orchestration, Automation, and Response (SOAR) tool and a threat intelligence platform designed to coordinate security investigations by managing alerts, cases, and observables. The platform is distinguished by its multi-tenant architecture, which isolates data across different organizations while supporting selective cross-tenant sharing. It features a SOAR automation engine capable of executing sandboxed JavaScript logic to automate workflows and trigger response actions thro

Glider is a multi-protocol forward proxy, transparent proxy gateway, and network service provider. It functions as a DNS and DHCP server, a Linux IP set manager, and a network traffic load balancer. The project distinguishes itself through a protocol-translation bridge that translates traffic between different proxy schemes and a chain-based routing system that sequences multiple remote proxy servers. It supports transparent traffic interception at the system level and utilizes build-time protocol stripping to minimize the binary size of the executable. The system covers a broad range of net

MISP is an open-source threat intelligence sharing platform designed for collecting, storing, and distributing structured threat indicators and intelligence. At its core, it provides a distributed synchronization protocol for transferring events between instances, an attribute-based correlation engine that links matching indicators across events, and a REST API with an OpenAPI specification for programmatic access to threat data. The platform uses formal data formats for JSON, taxonomy, galaxy, and object templates to enable compatibility across tools and communities. The platform distinguish

This project is a network reconnaissance framework and internet metadata database used for collecting, storing, and analyzing data from active scanners and passive traffic captures. It functions as a threat intelligence aggregator and passive traffic analysis tool, merging scan results from multiple tools into a unified dataset for security investigation. The system distinguishes itself through its ability to visualize network assets using heatmaps and geographic charts to correlate autonomous systems and domain names. It provides external attack surface management by aggregating metadata to

Argus is a modular network reconnaissance framework designed for gathering network intelligence, mapping infrastructure, and assessing security postures through automated discovery tasks. It operates as a containerized security toolset that allows for the consistent execution of specialized information-gathering modules across different operating systems. The system functions as an infrastructure audit tool and a web application security scanner, performing tasks such as DNS lookups, port scanning, and the inspection of HTTP headers to detect vulnerabilities. It also serves as a threat intell

IntelOwl is a threat intelligence platform and security orchestration engine designed to aggregate, analyze, and enrich security observables. It functions as a security incident investigation tool and a threat intelligence aggregator, collecting data on files, domains, and IP addresses from diverse internal and external sources. The system differentiates itself through playbook-based workflow automation, allowing users to define reusable sequences of analysis tasks that trigger subsequent jobs based on prior outputs. It unifies disparate security data into a common schema and utilizes protoco

Vuls is an agentless vulnerability scanner and CVE intelligence aggregator. It identifies security flaws in operating systems, containers, and network devices without requiring the installation of permanent software agents on target machines. The project distinguishes itself by cross-referencing software versions against multiple vulnerability databases, security advisories, and known exploit catalogs. It utilizes platform-based enumeration and lockfile analysis to detect vulnerabilities in network hardware, programming libraries, and website plugins. The tool covers a broad range of securit

nDPI is a deep packet inspection toolkit and network protocol classifier designed to identify protocols and detect security threats through packet payload inspection. It functions as a network security monitor and a traffic analysis framework used to determine the services originating network flows. The system utilizes a modular dissector architecture and a sequence-based dissector chain to interpret network traffic. It supports custom protocol definition and protocol dissector extensions, allowing for the identification of proprietary or new network protocols. The toolkit provides capabilit

Tetragon is an eBPF-based runtime security and observability toolset designed for Linux and Kubernetes environments. It functions as a security policy manager, observability agent, and enforcement engine that hooks into kernel functions and tracepoints to detect privilege escalation, container escapes, and unauthorized system activity. The project distinguishes itself through its ability to perform real-time, in-kernel enforcement, allowing it to synchronously terminate malicious processes or modify function return values before a system call completes. It provides deep Kubernetes integration

The first open-source DDoS protection system

This project is an SSH security audit tool designed to analyze server and client configurations. It functions as a cryptographic analyzer that evaluates key exchange, MAC, and encryption algorithms to identify weak or legacy primitives and ensure security compliance. The tool distinguishes itself by providing a hardening guide with platform-specific configuration instructions and algorithm recommendations to remediate detected vulnerabilities. It also includes a denial of service tester that measures server resilience against CPU exhaustion and concurrent socket connection attacks. Broad cap

CrowdSec is a collaborative, distributed security engine designed for threat detection and infrastructure protection. It functions as an intrusion detection system that parses logs and network traffic to identify malicious patterns, utilizing a bucket-based threshold detection model to aggregate events and trigger alerts. The platform is built on a modular architecture that includes a centralized local API server for managing security signals and a relational database for persistent storage of remediation decisions. What distinguishes the project is its decoupled enforcement model, which offl

This project is a detection-as-code framework providing a library of security monitoring rules and predefined detection content for Elasticsearch data indices. It serves as a threat detection rule library designed to identify malicious activity and attack patterns across diverse data streams in cloud and on-premises environments. The framework implements a detection engineering workflow where rules are defined in YAML and managed as versioned code. It includes a set of command-line utilities for automated rule deployment, metadata searching, and template generation, supported by a Python-base

This is a public archive of vulnerability findings, proof-of-concept code, and technical reports detailing security flaws discovered in third-party software. It functions as a coordinated vulnerability disclosure platform, enabling private reporting to vendors and structured publication of advisories after a fix is released or a 90-day deadline passes. The repository provides modular security analysis tooling—standalone scripts and binaries each targeting a specific bug class for automated detection—alongside a cross-platform fuzzing framework that runs tests across multiple operating systems

This project is a feature flag library for Elixir applications, designed to manage and toggle application functionality at runtime. It provides a distributed system for controlling code paths without requiring new deployments, allowing developers to enable or disable features globally, for specific users, or for defined groups. The library distinguishes itself through a pluggable persistence framework that supports various storage backends, ensuring that flag configurations remain consistent across application restarts. It maintains state synchronization across distributed nodes using messagi

Automatically exported from code.google.com/p/nipper-ng

A collection of tools developed by other researchers in the Computer Science area to process network traces. All the right reserved for the original authors.

Lynis is an automated security auditing and system hardening framework designed for UNIX-based operating systems. It functions as a command-line utility that inspects local system configurations to identify security vulnerabilities, configuration weaknesses, and compliance gaps. By executing a series of modular tests, the tool generates actionable reports and remediation suggestions to assist in strengthening system defenses. The project distinguishes itself through a highly modular architecture that relies on shell-script-based execution and native system inspection. Users can define custom

A multi-protocol proxy server written in Rust (HTTP, SOCKS5, Vmess, Vless, Shadowsocks, Trojan, Snell, Hysteria2, TUIC v5, AnyTLS, Naiveproxy, XTLS)

Boringtun is a Rust-based library and userspace implementation of the WireGuard protocol. It provides the necessary logic to establish encrypted network tunnels and route secure traffic across different operating systems without requiring kernel-level administrative privileges. The project is designed for embedding VPN logic into other applications. It achieves this through a C-compatible binary interface and cross-platform native bindings, allowing other programming languages to incorporate tunnel operations and peer management into their own software.