And for scada also allows networks operators to gain full visibility and understanding of their. Deep packet inspection known bad signatures known good signatures whitelisting system hardening system locked down security management automates manual process enforces. Deep packet inspection is a small part of the filtering techniques. And for scada is an idsips security tool which uses dpi deep packet inspection techniques for detecting anomalous activity on ics networks and providing alerts together with forensics capabilities for network protection. We also present software tools that are available for free download on the. A common task to almost all middleboxes that deals with l7 protocols is deep packet inspection dpi. Infrastructure network without deep packet inspection sungho jeon, jeonghan yun, seungoh choi, woonyon kim the af. Understanding deep packet inspection using a suite of ics. Deep packet inspection evaluates the data part and the header of a packet that is. Scada security and deep packet inspection part 1 belden. Towards an indepth understanding of deep packet inspection.
Pdf towards an indepth understanding of deep packet. Implementing a prototype for the deep packet inspection as a. Ics industrial control system scada supervisory control and data acquisition plc programmable logic controller hmi humanmachine interface rtu remote telemetry. And for scada is an idsips security tool which uses dpi deep packet inspection techniques for detecting anomalous activity on ics networks and providing alerts together with forensics.
Deep packet inspection dpi is an advanced feature that can provide detailed logging, and enforce policy rules on functions and register values. Further, these artifacts can be useful in devising deep packet inspection dpi. Practical overview of implementing iec 62443 security. It security and ot security american petroleum institute. Getting started on ics and scada security part 1 of 2 scada security and deep packet. It is imperative that cybersecurity professionals gain a good understanding of. Rather, they move beyond the ip and tcp header information to. Asa with firepower services local management configuration. Understanding intrusion and network analysis policies. Understanding scada system security vulnerabilities. Since the reliable flow of scada traffic is critical to the average industrial facility, most engineers opted to let everything pass and take their chances with security. Deep packet inspection, which is also known as dpi, information extraction, ix, or complete packet inspection, is a type of network packet filtering. We would like to show you a description here but the site wont allow us.
Fortinet and nozomi networks are collaborating to provide ics environments with a comprehensive security solution. However, security features in traditional scada firewalls have drawbacks in two main aspects. For example, a simple firewall can be used to segment networks in security level 1. Although dpi has been used for internet management for many years, some advocates of net neutrality fear that the technique may be used anticompetitively or to. Sep 05, 2017 supervisory control and data acquisition scada protocols monitor, control, and acquire data from industrial, infrastructure, and facility processes such as manufacturing, production, water treatment, electric power distribution, airport and shipping systems, and so on. Tofino security understanding deep packet inspection for scada security december 20, 2012 2 the solution is a technology called deep packet inspection dpi and it offers finegrained. Passive fingerprinting of scada in critical infrastructure network without deep packet inspection sungho jeon, jeonghan yun, seungoh choi, woonyon kim the af. A periodic retraining using a dynamic flow database enables the classifier to adapt to rapidly. Towards an indepth understanding of deep packet inspection using a suite of. Understanding deep packet inspection for scada security belden.
All the communication that happens over the internet makes use of packets to. Tofino security understanding deep packet inspection for scada security december 20, 2012 2 the solution is a technology called deep packet inspection dpi and it offers finegrained control of scada network traffic. Uncovering vulnerable industrial control systems from the. Abstract next generation firewalls with deep packet inspection dpi capabilities are now mainstream for it products. Scada hacker was conceived with the idea of providing relevant, candid, missioncritical information relating to industrial security of supervisory control and data acquisition. Common misconceptions about scada system security at the heart of. Understanding deep packet inspection using a suite of ics protocol packets. Together, network analysis and intrusion polic ies provide broad and deep packet inspection. Eric byres, cto and vp engineering of tofino security, a belden company, provides a quick tutorial.
Furthering this risk is the increasing availability of information describing the operations of scada systems. Its scope is limited to the layer 2 and 3 of the osi model. To support competition in product choices, several standards for the interconnection of scada systems and remote terminal units rtus have been published, as. Dpi improves the security and reliability of industrial systems. A more advanced deep packet inspection firewall or a unidirectional gateway would provide greater security than a simple firewall, but additional security capabilities are not specified at this level they may be specified at advanced levels. Deep packet inspection combined with semisupervised machine learning is suitable for efficiently classifying flows to identify audio, video, and interactive data, thereby facilitating fine. The data plane encompasses commands in which the hmi is reading pressure or temperature data from a programmable logic controller plc or writing to a specific register in an interval.
Securing ethernetip control systems using deep packet. Deep packet inspection dpi is an important extension model in scada firewall that allows the firewall to inspect deeper into the application fields of packets, and exactly understand what detailed scada applications are going to be executed in realtime. Since the reliable flow of scada traffic is critical to the average industrial facility, most engineers opted to let everything pass and take their chances with. Understanding deep packet inspection for scada security. Deep packet inspection packet filters found in network devices are the first line of defense against malicious packets. Jul 19, 2017 deep packet inspection dpi shallow packet inspection. In 39, a comprehensive packet inspection based cpi firewall model for scada security is presented. Deep packet inspection refers to the fact that these boxes dont simply look at the header information as packets pass through them. Reviewing the basicsin part 1 of this series i explained dpi technology in detail.
Check point ics security user guide check point software. The diagram in understanding how policies examine traffic for intrusions shows the flow of traffic through a device in an inline, intrusion prevention and amp deployment, as. Deep packet inspection, which is also known as dpi. Since, this has to be done on real time basis at the. These critical systems are largely based on legacy scada and industrial control system ics products and protocols. Securing scada systems from apts like flame and stuxnet part 2. A more advanced deep packet inspection firewall or a unidirectional gateway would provide. Deep packet inspection for scada and process controls. Practical overview of implementing iec 62443 security levels.
Employing deep packet inspection dpi on a realtime copy of network traffic, the system uses a safe, fully passive approach that never impacts industrial control systems or the safety and reliability of the process. Why scada firewalls need to be stateful part 1 of 3. Towards an indepth understanding of deep packet inspection using a suite of industrial control systems protocol packets. The lack of granularity of scadaics protocols, making deep packet inspection a mandatory requirement. A deep packet inspection firewall inspects the content contained in messages and applies more detailed rules. Implementing a prototype for the deep packet inspection as. Securing industrial control systems ics with fortinet.
Learn about deep packet inspection in data protection 101, our series on the fundamentals of information security. Deep packet inspection is a small part of the filtering techniques that are adopted by security providers in their commercial products. Dpi improves the security and reliability of industrial systems the urgent need for dpi that are attacking industrial control systems nowadays. Towards an indepth understanding of deep packet inspection using a suite of industrial control systems protocol packets article pdf available october 2016 with 1,060 reads how we measure reads.
Passive fingerprinting of scada in critical infrastructure. In the past, these networks were secured through isolation and proprietary protocols. Deep packet inspection dpi is used for indepth analysis of the packets sent over the internet. Fixed configuration firewalls, safety systems and reduced human error. Scada cyber security for critical infrastructure protection. To optimize the security of your network, you need to subject every data packet in every stream of network traffic to deep packet inspection. This white paper explains what dpi is, how it compares to traditional it firewalls, and how it is being used to secure critical scada systems throughout the world. They can help you detect, alert on, and protect against network traffic that could threaten the availability, integrity, and confidentiality of hosts and their data. Understanding deep packet inspection and why its important to begin with, we must understand the concepts of the control plane and data plane. Integrity verification for scada devices using bloom. Deep packet inspection radisys white paper 5 dpi in mobile and fixed broadband service provider networks given the nature of ip, dpi elements may be placed anywhere in the communications path, and may be coresident with access gateways, routers, security gateways, border gateways and so on or may be separate elements. The packet is filtered according to the scan results and predefined policies. Jul 27, 2008 deep packet inspection refers to the fact that these boxes dont simply look at the header information as packets pass through them. Integrity verification for scada devices using bloom filters.
The information obtained is used for routing the packet to the destination address. Deep packet inspection, ethernetip, common industrial protocol, cip, cip object, cip service, firewall, access control list, acl, security, gui, user interface, usability, scada. Deep packet inspection dpi is important for the future of scada ics security and in this article i explain why. Anyone working with scada or industrial control systems ics in the oil and gas industry is aware of the pressure to increase productivity and reduce costs through network integration. But recently, electronics manufacturers have developed socalled deep packet inspection dpi technology capable of tracking internet communications in real time, monitoring the content, and. A guide to deep packet inspection digital experience. It is designed to understand the specific scada protocols and then apply filters. Minimize downtime to maximize your reliability and safetyanyone working with scada or industrial control systems ics in the oil and gas industry is aware of the pressure to increase. Introduction scada security for managers and operators. The industry has embraced new technologies but many systems werent designed with security in mind and are therefore now exposed to increased risk. Deep packet inspection combined with semisupervised machine learning is suitable for efficiently classifying flows to identify audio, video, and interactive data, thereby facilitating finegrained adaptive qos traffic engineering yu et al.
An advanced technology called deep packet inspection dpi can offer a control solution against malicious attacks until more secure ics and scada devices and protocols are used. Understanding scada system security vulnerabilities page 2 january 2001 2001 riptech, inc. Deep packet inspection radisys white paper 5 dpi in mobile and fixed broadband service provider networks given the nature of ip, dpi elements may be placed anywhere in the. To understand dpi, it is first important to understand how the. General overview identified in 2009 the diagram below displays a structured overview of scada cyber security elements. Spi inspects the packets header to identify the source and destination ip address.
Towards an indepth understanding of deep packet inspection using a suite of industrial control systems protocol packets abstract industrial control systems ics are increasingly at risk and vulnerable to internal and external threats. This white paper explains what dpi is and how it is being used to secure critical scada systems throughout the world. For more information, see configuring scada preprocessing. The following chapters will go into detail on these topics. Dissecting industrial control systems protocol for deep packet. Eric byres, cto and vp engineering of tofino security, a belden company, provides a quick tutorial on how deep packet inspection provides a more thorough defense for industrial control systems. Dpi is used in a wide range of enterpriselevel applications, by telecommunications service providers, and by governments.
The solution combines nozomi networks scadaguardian. Understanding deep packet inspection for scada security the worlds manufacturing, energy and transportation infrastructures are currently facing a serious security crisis. Sans scada security summit ii september 28, 29, 2006 disclaimer references made herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the u. Scada protocol deep packet inspection secure crossing.
Attendees of this presentation will not only gain a better understanding of industrial security and the protocols that power communications, they will learn how to secure. Scada security and deep packet inspection part 2 of 2. First, a traditional deep packet inspection dpi enabled scada firewall only partially inspects. Deep packet inspection, ethernetip, common industrial protocol, cip, cip object, cip service, firewall, access control list, acl, security, gui, user interface, usability, scada, industrial control systems, ics. Generic firewalls make use of this type of inspection. For the past 30 years, industrial control system ics products were. It is designed to understand the specific scada protocols and then apply filters on fields and values that matter to control systems. Similarly, the demand for remote support has made many control systems accessible via remote access technologies. Understanding deep packet inspection for scada security retrieved from. Deep packet inspection clearly the firewall needs to dig deeper into the protocols to understand exactly what the. In 39, a comprehensive packet inspectionbased cpi firewall model for scada security is presented. Deep packet inspection dpi is a type of data processing that inspects in detail the data being sent over a computer network, and usually takes action by blocking, rerouting, or logging it. They can help you detect, alert on, and protect against network traffic that could threaten the availability. Deep packet inspection motivations, technology, and.
Deep packet inspection is a highly effective way to reveal suspicious content in the headers or the payloads in any packet processing layer, except when the payload is encrypted. The lack of granularity of scada ics protocols, making deep packet inspection a mandatory requirement. The barracuda cloudgen firewall is, at its heart, a. Scada hacker provides visitors with a comprehensive collection of security related resources including tools commonly used to secure and test ics architectures, information on the latest threats, vulnerabilities, and exploits that exist for ics architectures, and a comprehensive library of the latest in standards, best practices, guidelines. Deep packet inspection and filtering enables advanced network management, user service, and security functions as well as internet data mining, eavesdropping, and internet censorship. Understanding the deep packet inspection dpi errors.
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