Open-source and free CyberSecurity tools for enterprises environment

Hello Everyone, in this article I am sharing some valuable open-source and free cybersecurity tools to use in an enterprise environment. Some tools required a license to activate advanced features.

Most of the tools I personally implemented and used in medium-level business infrastructure. Which tools required Linux and little programming knowledge to handle and maintain. Because sometimes tools will get crash due to some open/known bugs.

PfSense Firewall

The pfSense project is a free network firewall distribution, based on the FreeBSD operating system with a custom kernel and including third-party free software packages for additional functionality. pfSense software, with the help of the package system, can provide the same functionality or more as common commercial firewalls, without any of the artificial limitations. It has successfully replaced every big-name commercial firewall you can imagine in numerous installations around the world, including Check Point, Cisco PIX, Cisco ASA, Juniper, Sonicwall, Netgear, Watchguard, Astaro, and more.

You required a specific device to install this software or you can do it with VMware.

DOWNLOAD

OpenVAS Vulnerability scanner

OpenVAS has been developed and driven forward by the company Greenbone Networks since 2006.

OpenVAS is an open-source vulnerability scanner. Its capabilities include unauthenticated and authenticated testing, various high-level and low-level internet and industrial protocols, performance tuning for large-scale scans, and a powerful internal programming language to implement any type of vulnerability test.
The scanner obtains the tests for detecting vulnerabilities from a feed that has a long history and daily updates.

But this tool is hard to run on a Personal PC (8 GB RAM-i5). Slow scanner and you need to be paid license to unlock advanced features.

Download Paid Version. Download the Free version.

AlienVault OSSIM – SIEM Tool

One of the best and most intelligent SIEM tools in the open-source community. Personally, I was very happy. OSSIM does an active scan and alerts immediately once the attack is on the victim’s PC.

Because of these good qualities, AT&T cybersecurity was acquired in 2019. Even though an open-source community edition is available.

9/10 for the scanning report and data process speed. But while I am using faced SQL database crash multiple times.

• Asset discovery
• Vulnerability assessment
• Intrusion detection
• Behavioral monitoring
• SIEM event correlation

DOWNLOAD community edition

PacketFence-Open Source NAC

NAC (Network Access Controller) is a powerful tool in cybersecurity to do automation with multivendor devices like firewall, switches, Wi-Fi controllers, Anti-Virus, AD, etc., and which help to achieve Zero-trust and BYOD concept.

PacketFence is a fully supported, trusted, Free, and Open Source network access control (NAC) solution. Boasting an impressive feature set including a captive portal for registration and remediation, centralized wired, wireless, and VPN management, industry-leading BYOD capabilities, 802.1X and RBAC support, integrated network anomaly detection with layer-2 isolation of problematic devices; PacketFence can be used to effectively secure small to very large heterogeneous networks.

 It can be hosted on Amazon AWS, Microsoft Azure, Rackspace, or others.

DOWNLOAD latest version

OSSEC Host-based Intrusion Detection System (HIDS)

OSSEC has a powerful correlation and analysis engine, integrating log analysis, file integrity monitoring, Windows registry monitoring, centralized policy enforcement, rootkit detection, real-time alerting, and active response. It runs on most operating systems, including Linux, OpenBSD, FreeBSD, macOS, Solaris, and Windows.

Features :

• Log-based Intrusion Detection (LIDs)
• Compliance Auditing
• Rootkit and Malware Detection
• File Integrity Monitoring (FIM)
• Active Response
• System Inventory

This tool can integrate with Cloudfare, Slack, ELK, Paloalto, and Unisys for advanced analysis.

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Security Onion (SOS)

Security Onion is a free and open-source Linux distribution for threat hunting, enterprise security monitoring, and log management. The easy-to-use Setup wizard allows you to build an army of distributed sensors for your enterprise in minutes! Security Onion includes Elasticsearch, Logstash, Kibana, Suricata, Zeek (formerly known as Bro), Wazuh, Stenographer, TheHive, Cortex, CyberChef, NetworkMiner, and many other security tools.

NIDS

Collect network events from Zeek, Suricata, and other tools for complete coverage of your network. Cast a wide net to catch the bad guys quickly and easily.

HIDS

Security Onion supports several host-based event collection agents including Wazuh, Beats, and osquery. Just point them to your installation and it’s off to the races.

Static Analysis (PCAP Import)

Use Security Onion to import PCAP files for quick static analysis and case studies. Spin up a virtual machine quickly and get started in just a few minutes.

SOC Workstation

A workstation install option is also available for SOC analysts to use local Linux tools to perform analysis of network and host events. No need to install extra tools, we bundle all the apps you might need.

Read-on goes Hardware model and orchestration devices available from Security onion Solution.

DOWNLOAD opensource version

Above mentioned tools are not recommended for installation on personal PC and low configuration servers.