Vulnerability scanning is an essential activity for enterprise security. We recommend the best free and open source vulnerability detection tools.
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Category: Security
OSV-Scanner – finds known vulnerabilities
OSV-Scanner finds known vulnerabilities affecting your project’s dependencies.
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8 Best Free and Open Source Network Intrusion Detection Systems
An intrusion detection system is a device or software application that monitors a network or systems for malicious activity or policy violations.
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Slips – intrusion detection and prevention system
Slips (Stratosphere Linux IPS) is an endpoint behavioural intrusion detection and prevention system.
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testssl.sh – tests TLS/SSL ciphers, protocols and cryptographic flaws
testssl.sh is a command-line tool that checks a server’s service on any port for support of TLS/SSL ciphers and protocols as well as cryptographic flaws.
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Vuls – agentless vulnerability scanner
Vuls is an agentless vulnerability scanner that identifies security vulnerabilities affecting Linux, FreeBSD, Windows, macOS
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Tsunami – general-purpose network security scanner
Tsunami is a general-purpose network security scanner with an extensible plugin system.
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23 Best Free and Open Source Network Analyzers
A network analyzer (also known as a packet analyzer, packet sniffer, or protocol analyzer) is software that intercepts and logs traffic that passes over a computer network or part of a network.
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Malcolm – network traffic analysis suite
Malcolm is a network traffic analysis suite designed for network security monitoring, threat hunting and incident response.
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7 Best Free and Open Source Frontends for GnuPG
GnuPG is a superb tool though it’s a command line affair. If you’re looking for a GUI frontend, check out these tools.
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Arkime – scalable network analysis and full packet capture system
Arkime is a scalable network analysis and full packet capture system. It captures network traffic, stores packets in standard PCAP format.
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14 Best Free and Open Source Firewall Tools
We recommend free and open source firewall tools.
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20 Best Free and Open Source Steganography Tools
Conceal messages in other messages.
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PixelSafe – graphical steganography utility
PixelSafe is a graphical steganography utility that hides data inside PNG images using the Least Significant Bit (LSB) technique.
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XDP Firewall – stateless firewall tool
XDP Firewall is a stateless firewall that uses eBPF and attaches to the Linux kernel’s XDP hook for high-performance packet filtering.
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zsteg – detects steganographically hidden data
zsteg is a command-line tool that detects steganographically hidden data in PNG and BMP image files.
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StegoVeritas – command-line steganography analysis tool
StegoVeritas is a command-line steganography analysis tool.
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Aletheia – detect hidden messages in digital images
Aletheia is a command-line toolbox for detecting hidden messages in digital images. It uses machine learning.
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FirewallFabrik – graphical firewall policy management tool
FirewallFabrik is a graphical firewall policy management tool and modern successor to Firewall Builder.
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AperiSolve – web-based steganalysis platform
AperiSolve automates the examination of images for concealed data.
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