10 Free and Open source Cyber Security tools


1. Wireshark
Wireshark is a free and open-source packet analyzer. It is used for network troubleshooting, analysis, software and communications protocol development, and education. It’s the world’s foremost and widely-used network protocol analyzer. It allows you see what’s happening on your network at a microscopic level.

2. Nagios
Nagios is a free and open-source computer-software application that monitors systems, networks and infrastructure. Nagios offers monitoring and alerting services for servers, switches, applications and services. It was designed to run on the Linux operating system and can monitor devices running Linux, Windows and Unix operating systems (OSes). Nagios software runs periodic checks on critical parameters of application, network and server resources

3 .Wazuh
Wazuh is a free, open-source host-based intrusion detection system. It performs log analysis, integrity checking, Windows registry monitoring, rootkit detection, time-based alerting, and active response. It offers Security Analytics, Intrusion Detection, Log Data Analysis, File Integrity Monitoring, Vulnerability Detection and more

4. Suricata
Suricata is an open source intrusion detection system and intrusion prevention system. The Suricata engine is capable of real time intrusion detection (IDS), inline intrusion prevention (IPS), network security monitoring (NSM) and offline pcap processing. Suricata inspects the network traffic using a powerful and extensive rules and signature language, and has powerful Lua scripting support for detection of complex threats.

5. OSSIM
OSSIM is an open source security information and event management system, integrating a selection of tools designed to aid network administrators in computer security, intrusion detection and prevention. It offers asset discovery, Vulnerability assessment, Intrusion detection, Behavioral monitoring and SIEM event correlation

6. Snort
Snort is a free open source network intrusion detection system and intrusion prevention system,Snort performs protocol analysis, content searching and matching. The program can also be used to detect probes or attacks, including, but not limited to, operating system fingerprinting attempts, semantic URL attacks, buffer overflows, server message block probes, and stealth port scans.

7. Nmap
Nmap is a free and open-source network scanner it is used to discover hosts and services on a computer network by sending packets and analyzing the responses. Nmap provides a number of features for probing computer networks, including host discovery and service and operating system detection.

8. Security onion
Security Onion is a free and open source Linux distribution for intrusion detection, enterprise security monitoring, and log management. It includes Elasticsearch, Logstash, Kibana, Snort, Suricata, Zeek (formerly known as Bro), Wazuh, Sguil, Squert, CyberChef, NetworkMiner, and many other security tools. I highly recommend this distro for security and defense purposes.

9. Kali Linux
Kali linux is a free and open source Linux distribution containing at least 300 different tools for security auditing. It provides variety of tools and frameworks that organizations use to scan their network, Systems, Applications for vulnerabilities. It’s the “ Most Advanced Penetration Testing Distribution, Ever. ”

10. HoneyBot
HoneyBOT is a medium interaction honeypot for windows. A honeypot creates a safe environment to capture and interact with unsolicited traffic on a network. HoneyBOT is an easy to use solution ideal for network security research or as part of an early warning IDS.




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