Popular OSSIM Plugins Sidebar for a Brief Agent by Running the Command: Listing of the Leading Ones)

Total Page:16

File Type:pdf, Size:1020Kb

Popular OSSIM Plugins Sidebar for a Brief Agent by Running the Command: Listing of the Leading Ones) To read more Linux Journal or start your subscription, please visit http://www.linuxjournal.com. AlienVault the Future of Security Information Management Meet AlienVault OSSIM, a complex security system designed to make your life simpler. JERAMIAH BOWLING Security Information Management (SIM) systems have made many security administrators’ lives easier over the years. SIMs organize an enterprise’s security environment and provide a common interface to manage that environment. Many SIM products are available today that perform well in this role, but none are as ambitious as AlienVault’s Open Source Security Information Management (OSSIM). With OSSIM, AlienVault has harnessed the capabilities of several popular security packages and created an “intelligence” that translates, analyzes and organizes the data in unique and customizable ways that most SIMs cannot. It uses a process called correlation to make threat judgments dynamically and report in real time on the state of risk in your environment. The end result is a design approach that makes risk management an organized and observable process that security administrators and managers alike can appreciate. In this article, I explain the installation of an all-in-one OSSIM agent/server into a test network, add hosts, deploy a Figure 1. A little tough to read, but this is where everything starts. third-party agent, set up a custom security directive and take a quick tour of the built-in incident response system. In addition AlienVault site in .iso form (version 2.1 at the time of this to the OSSIM server, I have placed a CentOS-based Apache writing) and booted my VM from the media. Web server and a Windows XP workstation into the test On bootup, you will see a rather busy and slightly difficult- network to observe OSSIM’s interoperation with different to-read install screen (Figure 1). The default option is the text- systems and other third-party agents. based install, but by pressing the down arrow, you will see a graphical install option. Select the Text option and press Enter. Installation If you’ve seen Debian install screens, the OSSIM installer will To keep deployment time to a minimum, I deployed OSSIM look very familiar. Set your language preferences and partition on a VMware-based virtual machine (VM). OSSIM is built on your hard drive(s). Configure your settings for Postfix if desired. Debian, so you can deploy it to any hardware that Debian Finally, set your root password, and enter a static IP address for supports. I used the downloadable installation media from the the server when prompted. The installer will restart the 2 | march 2010 www.linuxjournal.com To read more Linux Journal or start your subscription, please visit http://www.linuxjournal.com. article when I discuss correlation. To start the agent, run: You now have an active OSSIM server using passive network monitors like /var/ossec/bin/ossec-control start snort, Nagios and ntop to report on your test network’s activity. Next, let’s Now, from the CentOS Web server, add some client-based agents that feed ssh to the OSSIM server, and run the data into the OSSIM server. following command to add your client agent to the OSSEC server: Installing the OSSEC Agent Many client agents can communicate /var/ossec/bin/manage_agents Figure 2. Main Login Screen with OSSIM, but because of space limitations, I am covering the one I Select A to add an agent, and enter believe is the most valuable to security a unique name for it. Add the IP address administrators: OSSEC. OSSEC is a freely of your CentOS Web server and give the available host intrusion detection system agent a unique ID. The default ID usually (HIDS) maintained by Trend Micro that performs a multitude of client security tasks, such as logging, alert- ing, integrity checking and rootkit detection. Figure 3. Main Dashboard Additionally, a large number of OSSIM plug- machine to complete the configuration. ins for OSSEC already Open a browser from a machine on are installed with your the same network and enter the IP server that can monitor address of the OSSIM server in the URL virtually any part of a field (Figure 2). Enter “admin” as the UNIX/Linux/Windows user and password to log in to the man- system. Figure 4. Setting Up the First Network Scan agement site. Change your password First, let’s install under the Configuration→Users section. OSSEC on the CentOS After logging in, the main dashboard Web server. Download view loads (Figure 3). and extract the client The next step is to add systems tar from the OSSEC for the OSSIM server to monitor. Start Web site. If you have by defining your local network and difficulty finding the performing a cursory scan. On the OSSEC agent, or any Networks tab under Policy, click Insert other agent, links to New Network. Enter your LAN infor- OSSIM’s supported mation in the fields provided. If you third-party agents don’t see a sensor listed, insert a are available in the new one using the hostname and Tools/Downloads section IP address of your all-in-one OSSIM of the management server. Leave the Nagios check page. Next, run the Figure 5. Nagios Working under the Hood box enabled, but the Nessus box install.sh script from the unchecked (Figure 4) to reduce the unpacked tar folder. time needed for the first scan. After Verify your machine the scan completes, several hosts information and select should appear on the Hosts tab of the the agent install option. Policies section. OSSIM installs and Accept the default auto-configures Nagios and ntop install directory. Enter during installation, so you also can see the IP address of the basic network information by visiting server (the OSSIM the Monitors section of the manage- server). Run the integrity- ment page (Figure 5). Once all hosts check dæmon and are found, find the CentOS Web server enable the rootkit- in the Hosts section under Policies, detect engine. When and modify its priority from 1 to 5 asked to enable active (Figure 6). You will use this later in the response, answer “no”. Figure 6. Changing the Web Server’s Asset Value www.linuxjournal.com march 2010 | 3 To read more Linux Journal or start your subscription, please visit http://www.linuxjournal.com. FEATURE AlienVault is fine, unless you plan on implementing 7). As you now have an external feed a naming convention for your OSSEC coming into your OSSIM server, let’s look Popular clients. Enter Y to confirm adding the at how it digests and analyzes the data. agent. This returns you to the main OSSIM menu. Select E to extract. Input the Events, Alarms, Directives client ID you want to extract (the ID you and Correlation Plugins assigned to the CentOS server). From For OSSIM to decipher data from any another terminal window on the CentOS source, it first must have a plugin. A Web server, run the local manage_agents plugin is an XML-based configuration file command. Select I to import the unique that tells OSSIM how to read information Some of the more popular key. Copy and paste the unique key from from a particular data source and when plugins for OSSIM include the SSH window to the Web server’s local to register a security event. According the following: prompt. Enter Y to confirm the key, and to the AlienVault site, more than 2,300 select Q to quit. Close the SSH connection, plugins currently are available (see the I Snort and from the local prompt, restart the Popular OSSIM Plugins sidebar for a brief agent by running the command: listing of the leading ones). I Nagios An event is any occurrence that a /var/ossec/bin/ossec-control restart plugin’s native software deems impor- I OpenVAS tant enough to log or warn on. On your XP client, download and Events in OSSIM should be treated I Nessus install the OSSEC agent as well as the like log entries. They are not necessarily Putty SSH client. When finished, run the indicative of a problem, but should be I ntop Putty client to SSH to the OSSIM server reviewed nonetheless. When multiple and repeat the same manage_agents events take place in such a way that an I Nmap command to generate and extract the administrator has marked them as being XP client’s unique key from the server. “suspicious”, OSSIM throws an alarm. I OSSEC Once extracted, paste it into the XP It is also possible for a plugin to set a client by opening the Manage Agent single event’s settings high enough that I Passive OS Fingerprinter applet from the start menu under the it can throw an alarm when the single (p0f) OSSEC program group. event occurs. The criteria used to trigger Finally, to begin receiving OSSEC an alarm from multiple different events I Osiris events in OSSIM, open the file is known as a directive. The process of /etc/ossim/ossim_setup.conf on the analyzing multiple events within a direc- I arpwatch OSSIM server and in the [sensor] section tive is called correlation. Correlation add ossec to the end of the line that is central to OSSIM’s operation. With I syslog begins with the word detectors. Save correlation, administrators can take data and exit the config file, and restart from a multitude of disparate security I PAM your OSSIM server using the shutdown devices and tailor directives to reduce -r now command. Upon reboot, you false positives and extrapolate threat I Honeyd should start to see OSSEC events appear data in real time.
Recommended publications
  • OSSIM: a Careful, Free and Always Available Guardian for Your Network OSSIM a Careful, Free and Always Available Guardian for Your Network
    FEATURE OSSIM: a Careful, Free and Always Available Guardian for Your Network OSSIM a Careful, Free and Always Available Guardian for Your Network Monitor your network’s security 24/7 with a free and open-source solution that collects, analyzes and reports logs of the events on your network. MARCO ALAMANNI 68 / JUNE 2014 / WWW.LINUXJOURNAL.COM LJ242-June2014.indd 68 5/22/14 12:36 PM etworks and information check them all, one by one, to obtain systems are increasingly meaningful information. N exposed to attacks that A further difficulty is that there is are becoming more sophisticated no single standard used to record the and sustained over time, such as logs and often, depending on the type the so-called APT (Advanced and size, they are not immediate or Persistent Threats). easy to understand. Information security experts agree It is even more difficult to relate on the fact that no organization, other logs produced by many even the best equipped to protect different systems to each other itself from these attacks, can be manually, to highlight anomalies considered immune, and that the in the network that would not be issue is not whether its systems will detectable by analyzing the logs of be compromised, but rather when each machine separately. and how it will happen. SIEM (Security Information and It is essential to be able to Event Management) software, detect attacks in a timely manner therefore, is not limited to and implement the relative being a centralized solution for countermeasures, following log management, but also (and appropriate procedures to respond especially) it has the ability to to incidents, thus minimizing the standardize logs in a single format, effects and the damages they can analyze the recorded events, cause.
    [Show full text]
  • OSSIM Fast Guide
    ----------------- OSSIM Fast Guide ----------------- February 8, 2004 Julio Casal <[email protected]> http://www.ossim.net WHAT IS OSSIM? In three phrases: - VERIFICATION may be OSSIM’s most valuable contribution at this time. Using its correlation engine, OSSIM screens out a large percentage of false positives. - The second advantage is that of INTEGRATION, we have a series of security tools that enable us to perform a range of tasks from auditing, pattern matching and anomaly detection to forensic analysis in one single platform. We take responsibility for testing the stability of these programs and providing patches for them to work together. - The third is RISK ASSESSMENT, OSSIM offers high level state indicators that allow us to guide inspection and measure the security situation of our network. * DISTRIBUTION - OSSIM integrates a number of powerful open source security tools in a single distribution. These include: - Snort - Nessus - Ntop - Snortcenter - Acid - Riskmeter - Spade - RRD - Nmap, P0f, Arpwatch, etc.. - These tools are linked together in OSSIM’s console giving the user a single, integrated navigation environment. * ARCHITECTURE - OSSIM is organized into 3 layers: . Sensors . Servers . Console - The database is independent of these layers and could be considered to be a fourth layer. OSSIM 2004/02/07 Sensors - Sensors integrate powerful software in order to provide three capabilities: . IDS . Anomaly Detection . Real time Monitoring - Sensors can also perform other functions including traffic consolidation on a segment and event normalization. - Sensors communicate and receive orders from the server using a proprietary protocol. Server - OSSIM’s server has the following capabilities: . Correlation . Prioritization . Online inventory . Risk assessment . Normalization Console The console’s interface is structured hierarchically with the following functions: .
    [Show full text]
  • OSSIM, Una Alternativa Para La Integración De La Gestión De Seguridad En La Red
    Revista Telem@tica. Vol. 11. No. 1, enero-abril, 2012, p. 11-19 ISSN 1729-3804 OSSIM, una alternativa para la integración de la gestión de seguridad en la red Walter Baluja García1, Cesar Camilo Caro Reina2, Frank Abel Cancio Bello3 1 ISPJAE, Ingeniero en Telecomunicaciones y Electrónica, Dr. C. Tec. [email protected] 2ISPJAE. Estudiantes de 5to Año de Telecomunicaciones y Electrónica [email protected] 3 ISPJAE, Ingeniero en Informática [email protected] RESUMEN / ABSTRACT En la actualidad resulta cada vez más complicado mantenerse asegurado frente a los diferentes ataques que se pueden presentar en una red, lo cual resulta en una gestión de seguridad mucho más compleja para los administradores de red. Para cumplir con ese cometido los gestores utilizan un grupo de soluciones que permiten automatizar su trabajo, gestionando grandes volúmenes de información. El presente artículo realiza un breve resumen sobre los sistemas de Administración de Información y Eventos de Seguridad (SIEM por sus siglas en ingles), revisando sus principales características, y continua con la descripción del sistema OSSIM Alienvault, donde se muestran su arquitectura y componentes. Palabras claves: Gestión, Seguridad, SIEM, OSSIM. OSSIM, an alternative network management and protection: Actuality is more difficult to maintain a system secured from the different threats that exist on a network, this results in more complex security management for network managers. This paper briefly summarizes Security Information and Event Management systems (SIEM), it reviews the main characteristics and continues with a description of OSSIM Alienvault System, showing its components and architecture. Keywords: Management, Security, SIEM, OSSIM.
    [Show full text]
  • Alienvault OSSIM Installation Guide
    AlienVault Installation Guide AlienVault LC - 1901 S Bascom Avenue Suite 220 Campbell, CA, 95008 T +1 408 465-9989 [email protected] wwww.alienvault.com Juan Manuel Lorenzo ([email protected]) Version 1.5 Copyright © AlienVault 2010 All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or me- chanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written per- mission of the copyright owner and publisher. Any trademarks referenced herein are the property of their respective holders. AlienVault LC - 1901 S Bascom Avenue Suite 220 Campbell, CA, 95008 T +1 408 465-9989 [email protected] wwww.alienvault.com AlienVault Table of Contents Introduction! 1 About this Installation Guide! 1 AlienVault Professional SIEM! 2 What is AlienVault Professional SIEM?! 2 Basic Operation! 3 Components! 4 Detector! 4 Collector! 5 SIEM! 5 Logger! 5 Web interface! 5 Before installing AlienVault! 6 Installation Profiles! 6 Sensor! 6 Server! 7 Framework! 7 Database! 7 All-in-one! 7 Overview of the AlienVault installation procedure! 8 Automated Installation! 8 Custom Installation! 8 What you will need! 9 Professional Key! 9 Role of the installed system! 9 Network configuration for the Management Network card! 9 Requirements! 10 Hardware requirements! 10 Network requirements! 10 Obtaining AlienVault Installation Media! 11 Downloading the installer from AlienVault Website! 11 Creating a boot CD! 11 Booting the installer! 11 AlienVault Installation
    [Show full text]
  • Una Possibile Soluzione Per L'analisi Di Sicurezza All-In-One
    Public Una possibile soluzione per l’analisi di sicurezza all-in-one AlienVault-OSSIM in configurazione all-in-one per branch office e sedi medio piccole Gianluca Peco INFN CCR Workshop Public Public Contesto 4 Panoramica dei sistemi esistenti e scelta Cos’è e cosa fa OSSIM 3 Sommario Com’è fatto OSSIM 2 Implementazione del sistema 1 Demo 5 min. 24 maggio 2021 Gianluca Peco - INFN CCR Workshop 2 Public Public Contesto Anche a seguito dell’evoluzione delle linee guida di sicurezza delle informazioni risulta estremamente utile dotarsi di uno strumento per il monitoring, l’analisi e la correlazione di eventi di sicurezza (ma non solo), a supporto della difesa attiva, della compliance e dell’analisi forense. Grandi quantità di dati prodotti dai sistemi di log, dai firewall perimetrali, dalle sonde IDS (Intrusion Detection Systems) e dai sistemi EDR (Endpoint Detection and Response) sono spesso inutilizzati fino all’evento negativo. Esistono strumenti per l’analisi e la correlazione real-time degli eventi di sicurezza sia opensource che commerciali. I sistemi IT si sono stratificati e differenziati al punto da richiedere la gestione distribuita di attività storicamente centralizzate come l’analisi dei log e degli eventi. 24 maggio 2021 Gianluca Peco - INFN CCR Workshop 3 Public Public Stadi evolutivi della cybersecurity Fonte: https://www.trianz.com/cybersecurity 24 maggio 2021 Gianluca Peco - INFN CCR Workshop 4 Public Public Definizione di SIEM (1/2) https://it.wikipedia.org/wiki/Security_Information_and_Event_Management Software e servizi che integrano vari componenti per fornire analisi in tempo reale degli eventi, la possibilità di fornire report inerenti ai dati raccolti, rispondendo alle esigenze di incident response, compliance e analisi forense.
    [Show full text]
  • Case Study: Open-Source Networked Infrastructure Management
    Research Publication Date: 25 March 2008 ID Number: G00155852 Case Study: Open-Source Networked Infrastructure Management Geoff Johnson Networked infrastructures can be reliably managed more affordably than traditional vendors' solutions by using open-source-based appliances and network management tools. Open-source solutions — including Nagios for host, service and network monitoring; GroundWork for collaboration; and Open Source Security Information Management (OSSIM) for security information management — have been used by Opengear to create significant alternatives to the traditional management of networked IT infrastructure. Key Findings • Use of open-source solutions in networked IT operations management can be a valid and reliable approach. • IT operations managers should consider "best fit for purpose" solutions, such as open- source software (OSS) solutions, as well as best-of-breed solutions. Recommendations • Invite and evaluate OSS solutions when choosing management tools in IT operations. • Examine the scope for open source in new IT requirements and for tactical fixes to operational problems. • Ensure that end users of open-source applications across your business understand the legal, staffing and developer requirements in the new open-source community and ecosystem to which they are committing. • Use external resources from network service providers (NSPs) and integrators, rather than internal staff, for open-source applications. © 2008 Gartner, Inc. and/or its Affiliates. All Rights Reserved. Reproduction and distribution of this publication in any form without prior written permission is forbidden. The information contained herein has been obtained from sources believed to be reliable. Gartner disclaims all warranties as to the accuracy, completeness or adequacy of such information. Although Gartner's research may discuss legal issues related to the information technology business, Gartner does not provide legal advice or services and its research should not be construed or used as such.
    [Show full text]
  • Cybersecurity Framework Manufacturing Profile Low Impact Level Example Implementations Guide: Volume 1 – General Implementation Guidance
    NISTIR 8183A Volume 1 Cybersecurity Framework Manufacturing Profile Low Impact Level Example Implementations Guide: Volume 1 – General Implementation Guidance Keith Stouffer Timothy Zimmerman CheeYee Tang Jeffrey Cichonski Michael Pease Neeraj Shah Wesley Downard This publication is available free of charge from: https://doi.org/10.6028/NIST.IR.8183A-1 NISTIR 8183A Volume 1 Cybersecurity Framework Manufacturing Profile Low Impact Level Example Implementations Guide: Volume 1 – General Implementation Guidance Keith Stouffer Neeraj Shah Timothy Zimmerman Strativia, LLC CheeYee Tang Largo, Maryland Michael Pease Intelligent Systems Division Engineering Laboratory Jeffrey Cichonski Wesley Downard Applied Cybersecurity Division G2, Inc. Information Technology Laboratory Annapolis Junction, Maryland This publication is available free of charge from: https://doi.org/10.6028/NIST.IR.8183A-1 September 2019 U.S. Department of Commerce Wilbur L. Ross, Jr., Secretary National Institute of Standards and Technology Walter Copan, NIST Director and Under Secretary of Commerce for Standards and Technology National Institute of Standards and Technology Internal Report 8183A, Volume 1 81 pages (September 2019) This publication is available free of charge from: https://doi.org/10.6028/NIST.IR.8183A-1 Certain commercial entities, equipment, or materials may be identified in this document in order to describe an experimental procedure or concept adequately. Such identification is not intended to imply recommendation or endorsement by NIST, nor is it intended to imply that the entities, materials, or equipment are necessarily the best available for the purpose. There may be references in this publication to other publications currently under development by NIST in accordance with its assigned statutory responsibilities. The information in this publication, including concepts and methodologies, may be used by federal agencies even before the completion of such companion publications.
    [Show full text]
  • OWASP Logging Guide
    OWASP Logging Guide SUMMARY Why log ?............................................................................................................................................................. 2 What is commonly logged ? ................................................................................................................................ 2 What are security logs ?....................................................................................................................................... 2 What are the most common issues with logging ? ............................................................................................. 2 What are the common functions of a log management infrastructure ?.............................................................. 3 General............................................................................................................................................................. 3 Storage............................................................................................................................................................. 3 Analysis ........................................................................................................................................................... 3 Disposal ........................................................................................................................................................... 3 How to plan a logging infrastructure ? ...............................................................................................................
    [Show full text]
  • Fonctionnement D'ossim
    Fonctionnement d’OSSIM Dans le cadre de SIMS - Security Intrusion Management System (http ://www.tcom.ch/Tcom/Projets/SIMS/sims.html) Auteur : Joel¨ Winteregg ([email protected]) Chef de projet : Cyril Friche Professeur : Stefano Ventura Ecole´ : Swiss University of Applied Sciences (EIVD) Tcom institut (http ://www.tcom.ch) Date : 31 mai 2005 Table des matieres` 1 Fonctionnement logiciel d’OSSIM 3 1.1 Les applications Ossim-server et Ossim-agent ....................... 3 1.2 Fonctionnement de l’architecture avec une sonde Snort .................. 3 1.2.1 Pourquoi deux flux d’informations ? ........................ 3 1.3 Fonctionnement de l’architecture avec une sonde Ntop .................. 5 1.3.1 Ntop c’est quoi ? .................................. 5 1.3.2 Fonctionnement ................................... 6 1.4 Fonctionnement de l’architecture avec une sonde P0f ................... 6 1.4.1 P0f c’est quoi ? ................................... 7 1.4.2 Fonctionnement ................................... 7 1.5 Fonctionnement de l’architecture avec une sonde TCPTrack ............... 7 1.5.1 TCPTrack c’est quoi ? ............................... 7 1.5.2 Fonctionnement ................................... 7 1.6 Fonctionnement de l’architecture avec une sonde PADS .................. 8 1.6.1 PADS c’est quoi ? .................................. 8 1.6.2 Fonctionnement ................................... 9 1.7 Fonctionnement de l’architecture avec une sonde Syslog ................. 9 1.7.1 Qu’est-ce qu’une sonde HIDS ........................... 9 1.7.2 Fonctionnement ................................... 10 A Installation et configuration d’Ossim-server 11 A.1 Prerequis´ .......................................... 11 A.2 Installation ......................................... 11 A.3 Configuration ........................................ 12 A.3.1 Configuration du serveur Web ........................... 13 B Ajout et configuration d’une sonde Snort 14 B.1 Installation ......................................... 14 B.1.1 Snort .......................................
    [Show full text]
  • USM Appliance Deployment Guide
    USM Appliance™ Deployment Guide Copyright © 2021 AT&T Intellectual Property. All rights reserved. AT&T, the AT&T logo and all other AT&T marks contained herein are trademarks of AT&T Intellectual Property and/or affiliated companies. All other marks are the property of their respective owners. Updated April 27, 2021 2 USM Appliance™ Deployment Guide Contents System Overview 7 About USM Appliance 8 About USM Appliance System Architecture and Components 16 Event Collection, Processing, and Correlation Workflow 18 USM Appliance Deployments 23 USM Appliance Deployments 24 USM Appliance Deployment Types 25 USM Appliance Deployment Requirements 30 Firewall Permissions 33 Configure the USM Appliance Hardware 36 Deploy USM Appliance in VMware 50 Deploy USM Appliance Using Hyper-V Manager 55 Deploy USM Appliance with AMI 61 Configure the USM Appliance Sensor after Deployment 64 Configure the USM Appliance Logger after Deployment 65 Configure the USM Appliance Enterprise Server and Enterprise Database 70 Set Up the Management Interface 72 Register USM Appliance 73 USM Appliance Initial Setup 77 Access the AlienVault Setup Menu 78 Configure Network Interfaces 80 Configure the Search Domain 83 Configure a Hostname for USM Appliance 83 Change the Default Time Zone 84 Configure USM Appliance to Use a DNS 85 Configure Synchronization with an NTP Server 86 Configure USM Appliance to Recognize Your Local Keyboard 86 Configure Custom HTTPS Certificates in USM Appliance 87 Create the Default Admin User 89 USM Appliance™ Deployment Guide 3 Configure Mail
    [Show full text]
  • Installing OSSIM on a Debian GNU/Linux
    Installing OSSIM on a Debian GNU/Linux David Gil Stéphane Fournier Installing OSSIM on a Debian GNU/Linux by David Gil and Stéphane Fournier Revision History Revision 0.1 2004-10-21 Revised by: sfournier Conversion from plain text to Docbook v4.2 and update of debian packages versions Table of Contents 1. Introduction........................................................................................................................................................1 1.1. Foreword..................................................................................................................................................1 1.2. Structure considerations ..........................................................................................................................1 1.3. Lazy install ..............................................................................................................................................1 1.4. Necessary software installation...............................................................................................................2 2. Databases ............................................................................................................................................................3 2.1. Ossim database........................................................................................................................................3 2.2. Snort/Acid database.................................................................................................................................4
    [Show full text]
  • SCADA Intrusion Detection System Test Framework
    SCADA Intrusion Detection System Test Framework By: Henrik Waagsnes Supervisor: Nils Ulltveit-Moe, Associate Professor Ph.D IKT 590 - Master’s thesis Spring 2017 Department of Information and Communication Technology Faculty of Engineering and Science University of Agder Grimstad, 21 May 2017 Henrik Waagsnes SCADA Intrusion Detection System Test Framework Abstract Supervisory control and data acquisition (SCADA) systems play an important role in our critical infrastructure (CI). Several of the protocols used in SCADA communication are old and lack of security mechanisms. This master thesis presents a SCADA Intrusion Detection System Test Framework that can be used to simulate SCADA traffic and detect malicious network activity. The framework uses a signature-based approach and utilize two different IDS engines, Suricata and Snort. The IDS engines include rule-sets for the IEC 60870-5-104, DNP3 and Modbus protocols. The IDS engines ships detected events to a distributed cluster and visualize them using a web interface. The experiments carried out in this project show that there generally is little difference between Suricata and Snort's ability to detect malicious traffic. Suricata is compatible with signatures written in snort lightweight rules description language. I did however, discover some compatibility issues. The purposed framework applies additional latency to the analysis of IDS events. The perceived latency was generally higher for Snort events than for Suricata events. The reason for this is probably the additional processing time applied by the implemented log conversion tool. Keywords: SCADA, IDS, SIEM 2 Henrik Waagsnes SCADA Intrusion Detection System Test Framework Preface This report is the result of the master thesis IKT 590 (30 ECTS) which is part of my fourth semester MSc study at the Faculty of Engineering and Science, University of Agder (UiA) in Grimstad, Norway.
    [Show full text]