|By Lisa Lorenzin||
|October 18, 2012 02:00 PM EDT||
A wealth of security information exists in our networks from a variety of sources - policy servers, firewalls, switches, networking infrastructure, defensive components, and more. Unfortunately, most of that information is locked away in separate silos due to differences in products and technologies, as well as by companies' organizational boundaries. Further complicating the issue, information is stored in different formats and communicated over different protocols.
An open standard from the Trusted Computing Group (TCG) offers the capability to centralize communication and coordination of information to enable security automation. The Interface for Metadata Access Points - IF-MAP for short - is like Facebook for network and security technology, allowing real-time sharing of information across a heterogeneous environment.
IF-MAP, part of TCG's Trusted Network Connect (TNC) architecture, makes it possible for any authorized device or system to publish information to a Metadata Access Point (MAP), a clearinghouse for information about who's on the network, what endpoint they're using, how they're behaving, and many other details of the network. Systems can also search the MAP for relevant information and subscribe to any updates to that information. Just as IP transformed communications, IF-MAP revolutionizes the way systems share data.
Security automation is any part of a security system that is able to operate without - or with only limited - administrative involvement. As shown in Figure 1, a security administrator can define a unified security policy that applies to different types of protective mechanisms, such as next-generation firewalls (NGFW), intrusion prevention systems (IPS), unified threat management (UTM) systems, and more. Best-of-breed components from multiple vendors can share information using a standard information bus.
Figure 1: Effective security automation includes several protection mechanisms.
This coordination can extend beyond front-line access control products to back-end systems such as authorization databases, virtualization technology, and reputation systems. A policy server might create and modify policy based completely on the information received from other resources in the environment.
Logs from multiple sources can be collected and correlated by a security information and event management (SIEM) system, which itself acts as both a consumer of information and a provider of real-time intelligence based on that information. Security operations personnel can easily oversee activities in the network and provide human intervention in cases where full automation may not be achievable or desirable. Security automation enhances fundamental security solutions, adding dynamic, responsive, intelligent decision-making.
Establishing Network Trust
One of the basic solutions enabled by the TNC architecture is Comply to Connect, which incorporates Network Access Control (NAC) principles - an endpoint must first show its compliance with selected endpoint health requirements before being granted access to the network. Figure 2 shows a common Comply to Connect scenario.
Figure 2: The TNC architecture enables evaluation and enforcement of compliance at admission.
The endpoint, on the left, is a device attempting to access a protected network. The enforcement point is a guard that grants or denies access based on instructions from the policy server. The policy server is really the brains of the operation; it looks at the configured policy and decides what level of access should be granted. Then it informs the enforcement point, which executes those instructions.
Many enforcement options exist; the example in Figure 2 shows a wireless access point and a switch, but environments may also use a firewall or a virtual private network (VPN) gateway. Each of these has its own pros and cons; for example, a wireless access point with 802.1X can totally block unauthorized users. But while it provides admission control, it doesn't offer enforcement deeper in the network. For that reason, most NAC solutions support a combination of different enforcement points, which can be used individually or in combination.
The security policy controlling the compliance check shown in Figure 2 is quite simple: every Windows 7 endpoint on the network must have a self-encrypting drive (SED), up-to-date anti-virus protection, and a personal firewall. When a new Windows 7 endpoint comes on the network, the enforcement point will query it and then consult the policy server. If the endpoint complies with security policy, it is given access to the production network. Another endpoint that does not have an SED may be given only limited access to the network. That way, if either endpoint is lost or stolen, protected information is only on the endpoint that could store it securely on an SED.
Expanding Network Trust Evaluation
Behavior monitoring is another way to evaluate an endpoint. Many security-related sensor devices are already deployed in networks to monitor behavior: intrusion detection systems, leakage detection systems, endpoint profiling systems, and more. The TNC architecture lets users integrate those existing systems with each other and with the NAC solution by sharing information via a MAP.
Figure 3 shows an approach to check behavior. Security sensors in the network monitor behavior, and a security policy identifies acceptable behavior.
Figure 3: Behavior checking enables automated response to changes in the endpoint's activity.
Once an endpoint has connected to the network, even if it has passed authentication and compliance checks, it could behave in an unauthorized fashion. If the endpoint starts violating security policy by trying to spread a worm, that traffic is detected and stopped by an IPS sensor.
Even more important, that sensor publishes information to the MAP about the attack it stopped. The MAP notifies the policy server, which evaluates its security policy and instructs the enforcement point to move the endpoint to a remediation network until it can be addressed.
The end result is an entire network security system that is working together. Each part performs its function, and each piece is integrated with the whole using the open IF-MAP standard.
Extending Security to Mobile Devices
TNC standards have enabled NAC to evolve into a foundation technology for business requirements such as mobile security and Bring Your Own Device (BYOD). A common scenario in today's connected world occurs when a mobile user accesses the Internet and social networks on a personal device, such as a smartphone, which they also use to access their corporate network. If the smartphone inadvertently becomes infected with malware, corporate data on that device is now at risk. And it's even worse when the user connects their smartphone to the corporate network; the attacker, who has taken control of the device, can access sensitive information.
This situation occurs when a company's security team lacks the tools to accommodate employees using their own consumer devices to improve productivity. Without the appropriate technology, the IT team cannot:
- detect malware on the mobile device
- protect the user from cloud-based threats
- control access based on user identity, device, and location
- coordinate security controls to protect sensitive information
This clearly needs a new approach!
Addressing the new requirements of BYOD and providing broad protection involves flexible deployment models that can be tailored to individual environments and security context, and coordination to keep users protected against the dynamic threat landscape.
Security automation makes it possible to detect and address compromised mobile devices; protect the user from malicious sites and applications; restrict network and resource access based on user identity, device, and location; and correlate endpoint activity monitoring across the corporate network infrastructure.
Leveraging Standard Network Security Metadata
These capabilities are enabled by TNC's standardization of basic metadata for network security. Metadata is the information stored in a MAP, representing anything that is known about the network: traffic flows, scan results, user authentications, or other events. In the case above, metadata represents information about network components and applicable security policies. The MAP is a clearinghouse for metadata; MAP clients can publish metadata to it, search it for specific metadata, and/or subscribe to metadata about endpoints in the network.
These inquiries include common things that it might be helpful to know about an endpoint - the type of device, identity of the user operating the device, role assigned to that user, association between the MAC address and IP address of the endpoint, location of the endpoint, and any events related to that endpoint.
Extending Security Automation to Other Use Cases
While standard metadata is useful for out-of-box interoperability, much more information about an endpoint or a network is available. IF-MAP can be extended by creation of vendor-specific metadata, similar to Vendor-Specific Attributes (VSAs) in RADIUS, enabling anyone to publish anything that can be expressed in XML!
Imagine a manufacturing line, where a physical process is controlled by a digital component called a Programmable Logic Controller (PLC). An operator display panel, the Human Machine Interface (HMI), is typically physically remote from the actual process that needs monitoring. As changes in the process occur, the operator display updates in real-time.
Many HMIs use a legacy protocol called Modbus to poll the PLC, retrieve these process variables, and display them. Originally designed to be run over a serial connection, Modbus has been ported to TCP. One of the problems with the Modbus protocol and many others in this space is that there are zero security features in the protocol - no authentication, no authorization - which means no way of knowing whether a requestor is authorized to gain access requested, or even who is sending data the request. If an endpoint (or intruder) can ping the PLC, it can issue commands to it!
Many control systems components operate this way. Until now, they have been small islands of automation with very little interconnection to other systems. Running over a serial bus required physical serial connections - typically, the operator had to be present in front of the machine to affect it, so physical security was sufficient. And once these systems are in place, they are designed to stay in production for decades. So now these systems are getting more and more interconnected with the enterprise network - and, by extension, to external networks - and they encounter the same types of security issues as enterprise systems.
Overlaying Security onto Industrial Control Systems
A single manufacturing line could have hundreds, or even thousands, of these PLCs. Replacing them is out of the question, as is retro-fitting them to add on security. But what if a transparent security overlay was inserted to protect these legacy components?
Deployment and lifecycle management for such an overlay would be a huge challenge - unless there was a mechanism for provisioning certificates, communication details, and access control policies to the overlay components. That's exactly what one manufacturing company has done with IF-MAP, by using vendor-specific metadata for provisioning of certificate information and access control policy, as shown in Figure 4.
Figure 4: IF-MAP enabled security overlay protects industrial control system components.
The first step is to add the overlay protection. In this case, the enforcement points are customized components, designed for Supervisory Control And Data Acquisition (SCADA) networks, that can create an OpenHIP "virtual private LAN" on top of standard IP networks. This requires no changes to the underlying network, protects communications between SCADA devices, and is completely transparent to the protected SCADA devices.
A MAP and a provisioning client enable centralized deployment, provisioning, and lifecycle management for the myriad enforcement points. The provisioning client publishes metadata to the MAP to define the HMIs and PLCs and to specify security policies that allow them to talk to each other, but do not allow external access to them.
For example, when an HMI comes into the network and queries for a PLC, the HMI does an Address Resolution Protocol (ARP) lookup. The enforcement point receives that traffic, searches the MAP, and finds the access control policy determining whether this specific HMI can talk to that particular PLC. Enforcement points can be moved around the network without requiring manual reconfiguration or reprovisioning, since all of the provisioning is centralized via the MAP.
This is not just a neat thought experiment - it is actually in production deployment on hundreds of endpoints in critical manufacturing lines today!
The Future of Security Automation
We've barely scratched the surface of security automation. For one thing, it goes far beyond access control. Imagine...
- A content management database (CMDB) receives notification of a new device on the network and scans the new endpoint, then updates its data store
- An analysis engine observes some behavior on the network and requires more information about the associated endpoint, so it requests an investigation by another component such as an endpoint profiler or vulnerability scanner
- Carrier routers redirect traffic through deep packet inspection based on suspicious user activity
- A security administrator modifies an existing security policy, or adds a new policy, and various policy servers / sensors are notified, triggering a re-evaluation of the network's endpoints
- An application server publishes a request for bandwidth for a particular user based on the service the user is accessing, and network infrastructure components change QoS settings for those traffic flows based on that request
- An IF-MAP enabled OpenFlow switch controller makes packet-handling decisions based on information from other network components
- An analysis system determines that there's an attack underway; in addition to triggering a response, it notifies security administrators of the attack taking place, populating a dashboard with information to create a "heat map" of the attack
All of these are examples of a common three-step process: sensing, analysis, and response. Security automation is enabled by the abstraction and coordination of these functions across multiple disparate components in the network.
Imagine the power gained by linking together information from all of the various infrastructure and security technologies in a network and using that information to make dynamic, intelligent, automated decisions. That's the true promise of security automation - and the realization of that promise is in its infancy.
"My role is working with customers, helping them go through this digital transformation. I spend a lot of time talking to banks, big industries, manufacturers working through how they are integrating and transforming their IT platforms and moving them forward," explained William Morrish, General Manager Product Sales at Interoute, in this SYS-CON.tv interview at 18th Cloud Expo, held June 7-9, 2016, at the Javits Center in New York City, NY.
Sep. 29, 2016 10:30 PM EDT Reads: 4,013
The Internet of Things can drive efficiency for airlines and airports. In their session at @ThingsExpo, Shyam Varan Nath, Principal Architect with GE, and Sudip Majumder, senior director of development at Oracle, will discuss the technical details of the connected airline baggage and related social media solutions. These IoT applications will enhance travelers' journey experience and drive efficiency for the airlines and the airports. The session will include a working demo and a technical d...
Sep. 29, 2016 10:00 PM EDT Reads: 1,804
Why do your mobile transformations need to happen today? Mobile is the strategy that enterprise transformation centers on to drive customer engagement. In his general session at @ThingsExpo, Roger Woods, Director, Mobile Product & Strategy – Adobe Marketing Cloud, covered key IoT and mobile trends that are forcing mobile transformation, key components of a solid mobile strategy and explored how brands are effectively driving mobile change throughout the enterprise.
Sep. 29, 2016 08:45 PM EDT Reads: 2,209
Developing software for the Internet of Things (IoT) comes with its own set of challenges. Security, privacy, and unified standards are a few key issues. In addition, each IoT product is comprised of (at least) three separate application components: the software embedded in the device, the back-end service, and the mobile application for the end user’s controls. Each component is developed by a different team, using different technologies and practices, and deployed to a different stack/target –...
Sep. 29, 2016 08:45 PM EDT Reads: 1,546
Identity is in everything and customers are looking to their providers to ensure the security of their identities, transactions and data. With the increased reliance on cloud-based services, service providers must build security and trust into their offerings, adding value to customers and improving the user experience. Making identity, security and privacy easy for customers provides a unique advantage over the competition.
Sep. 29, 2016 06:15 PM EDT Reads: 3,684
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze Sponsor” of SYS-CON's 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management solutions, helping companies worldwide activate their data to drive more value and business insight and to transform moder...
Sep. 29, 2016 05:15 PM EDT Reads: 2,855
Personalization has long been the holy grail of marketing. Simply stated, communicate the most relevant offer to the right person and you will increase sales. To achieve this, you must understand the individual. Consequently, digital marketers developed many ways to gather and leverage customer information to deliver targeted experiences. In his session at @ThingsExpo, Lou Casal, Founder and Principal Consultant at Practicala, discussed how the Internet of Things (IoT) has accelerated our abil...
Sep. 29, 2016 04:45 PM EDT Reads: 2,794
SYS-CON Events has announced today that Roger Strukhoff has been named conference chair of Cloud Expo and @ThingsExpo 2016 Silicon Valley. The 19th Cloud Expo and 6th @ThingsExpo will take place on November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. "The Internet of Things brings trillions of dollars of opportunity to developers and enterprise IT, no matter how you measure it," stated Roger Strukhoff. "More importantly, it leverages the power of devices and the Interne...
Sep. 29, 2016 04:45 PM EDT Reads: 3,445
Digital innovation is the next big wave of business transformation based on digital technologies of which IoT and Big Data are key components, For example: Business boundary innovation is a challenge to excavate third-party business value using IoT and BigData, like Nest Business structure innovation may propose re-building business structure from scratch, as Uber does in the taxicab industry The social model innovation is also a big challenge to the new social architecture with the design fr...
Sep. 29, 2016 04:30 PM EDT Reads: 1,343
So, you bought into the current machine learning craze and went on to collect millions/billions of records from this promising new data source. Now, what do you do with them? Too often, the abundance of data quickly turns into an abundance of problems. How do you extract that "magic essence" from your data without falling into the common pitfalls? In her session at @ThingsExpo, Natalia Ponomareva, Software Engineer at Google, provided tips on how to be successful in large scale machine learning...
Sep. 29, 2016 04:00 PM EDT Reads: 2,401
If you had a chance to enter on the ground level of the largest e-commerce market in the world – would you? China is the world’s most populated country with the second largest economy and the world’s fastest growing market. It is estimated that by 2018 the Chinese market will be reaching over $30 billion in gaming revenue alone. Admittedly for a foreign company, doing business in China can be challenging. Often changing laws, administrative regulations and the often inscrutable Chinese Interne...
Sep. 29, 2016 04:00 PM EDT Reads: 482
In his session at @ThingsExpo, Kausik Sridharabalan, founder and CTO of Pulzze Systems, Inc., will focus on key challenges in building an Internet of Things solution infrastructure. He will shed light on efficient ways of defining interactions within IoT solutions, leading to cost and time reduction. He will also introduce ways to handle data and how one can develop IoT solutions that are lean, flexible and configurable, thus making IoT infrastructure agile and scalable.
Sep. 29, 2016 03:30 PM EDT Reads: 1,629
Data is an unusual currency; it is not restricted by the same transactional limitations as money or people. In fact, the more that you leverage your data across multiple business use cases, the more valuable it becomes to the organization. And the same can be said about the organization’s analytics. In his session at 19th Cloud Expo, Bill Schmarzo, CTO for the Big Data Practice at EMC, will introduce a methodology for capturing, enriching and sharing data (and analytics) across the organizati...
Sep. 29, 2016 03:15 PM EDT Reads: 1,794
SYS-CON Events announced today that Bsquare has been named “Silver Sponsor” of SYS-CON's @ThingsExpo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. For more than two decades, Bsquare has helped its customers extract business value from a broad array of physical assets by making them intelligent, connecting them, and using the data they generate to optimize business processes.
Sep. 29, 2016 03:00 PM EDT Reads: 2,973
Internet of @ThingsExpo has announced today that Chris Matthieu has been named tech chair of Internet of @ThingsExpo 2016 Silicon Valley. The 6thInternet of @ThingsExpo will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
Sep. 29, 2016 03:00 PM EDT Reads: 2,833
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, wh...
Sep. 29, 2016 02:00 PM EDT Reads: 3,958
Video experiences should be unique and exciting! But that doesn’t mean you need to patch all the pieces yourself. Users demand rich and engaging experiences and new ways to connect with you. But creating robust video applications at scale can be complicated, time-consuming and expensive. In his session at @ThingsExpo, Zohar Babin, Vice President of Platform, Ecosystem and Community at Kaltura, will discuss how VPaaS enables you to move fast, creating scalable video experiences that reach your...
Sep. 29, 2016 02:00 PM EDT Reads: 1,184
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, provided an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life sett...
Sep. 29, 2016 02:00 PM EDT Reads: 3,627
Cloud computing is being adopted in one form or another by 94% of enterprises today. Tens of billions of new devices are being connected to The Internet of Things. And Big Data is driving this bus. An exponential increase is expected in the amount of information being processed, managed, analyzed, and acted upon by enterprise IT. This amazing is not part of some distant future - it is happening today. One report shows a 650% increase in enterprise data by 2020. Other estimates are even higher....
Sep. 29, 2016 02:00 PM EDT Reads: 4,206
SYS-CON Events announced today that SoftLayer, an IBM Company, has been named “Gold Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York, New York. SoftLayer, an IBM Company, provides cloud infrastructure as a service from a growing number of data centers and network points of presence around the world. SoftLayer’s customers range from Web startups to global enterprises.
Sep. 29, 2016 01:45 PM EDT Reads: 1,130