|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.
Fact is, enterprises have significant legacy voice infrastructure that’s costly to replace with pure IP solutions. How can we bring this analog infrastructure into our shiny new cloud applications? There are proven methods to bind both legacy voice applications and traditional PSTN audio into cloud-based applications and services at a carrier scale. Some of the most successful implementations leverage WebRTC, WebSockets, SIP and other open source technologies. In his session at @ThingsExpo, Da...
Sep. 25, 2016 04:45 AM EDT Reads: 1,486
SYS-CON Events announced today that China Unicom will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. China United Network Communications Group Co. Ltd ("China Unicom") was officially established in 2009 on the basis of the merger of former China Netcom and former China Unicom. China Unicom mainly operates a full range of telecommunications services including mobile broadband (GSM, WCDMA, LTE F...
Sep. 25, 2016 04:15 AM EDT Reads: 1,677
SYS-CON Events announced today that Roundee / LinearHub will exhibit at the WebRTC Summit at @ThingsExpo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. LinearHub provides Roundee Service, a smart platform for enterprise video conferencing with enhanced features such as automatic recording and transcription service. Slack users can integrate Roundee to their team via Slack’s App Directory, and '/roundee' command lets your video conference ...
Sep. 25, 2016 04:15 AM EDT Reads: 1,379
Technology vendors and analysts are eager to paint a rosy picture of how wonderful IoT is and why your deployment will be great with the use of their products and services. While it is easy to showcase successful IoT solutions, identifying IoT systems that missed the mark or failed can often provide more in the way of key lessons learned. In his session at @ThingsExpo, Peter Vanderminden, Principal Industry Analyst for IoT & Digital Supply Chain to Flatiron Strategies, will focus on how IoT de...
Sep. 25, 2016 04:15 AM EDT Reads: 943
DevOps at Cloud Expo, taking place Nov 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 19th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long dev...
Sep. 25, 2016 03:15 AM EDT Reads: 3,341
Almost two-thirds of companies either have or soon will have IoT as the backbone of their business in 2016. However, IoT is far more complex than most firms expected. How can you not get trapped in the pitfalls? In his session at @ThingsExpo, Tony Shan, a renowned visionary and thought leader, will introduce a holistic method of IoTification, which is the process of IoTifying the existing technology and business models to adopt and leverage IoT. He will drill down to the components in this fra...
Sep. 25, 2016 03:00 AM EDT Reads: 1,447
There is growing need for data-driven applications and the need for digital platforms to build these apps. In his session at 19th Cloud Expo, Muddu Sudhakar, VP and GM of Security & IoT at Splunk, will cover different PaaS solutions and Big Data platforms that are available to build applications. In addition, AI and machine learning are creating new requirements that developers need in the building of next-gen apps. The next-generation digital platforms have some of the past platform needs a...
Sep. 25, 2016 02:45 AM EDT Reads: 1,696
I'm a lonely sensor. I spend all day telling the world how I'm feeling, but none of the other sensors seem to care. I want to be connected. I want to build relationships with other sensors to be more useful for my human. I want my human to understand that when my friends next door are too hot for a while, I'll soon be flaming. And when all my friends go outside without me, I may be left behind. Don't just log my data; use the relationship graph. In his session at @ThingsExpo, Ryan Boyd, Engi...
Sep. 25, 2016 02:15 AM EDT Reads: 1,204
SYS-CON Events announced today that Numerex Corp, a leading provider of managed enterprise solutions enabling the Internet of Things (IoT), will exhibit at the 19th International Cloud Expo | @ThingsExpo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Numerex Corp. (NASDAQ:NMRX) is a leading provider of managed enterprise solutions enabling the Internet of Things (IoT). The Company's solutions produce new revenue streams or create operating...
Sep. 25, 2016 12:45 AM EDT Reads: 1,928
Information technology is an industry that has always experienced change, and the dramatic change sweeping across the industry today could not be truthfully described as the first time we've seen such widespread change impacting customer investments. However, the rate of the change, and the potential outcomes from today's digital transformation has the distinct potential to separate the industry into two camps: Organizations that see the change coming, embrace it, and successful leverage it; and...
Sep. 25, 2016 12:45 AM EDT Reads: 1,033
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. 24, 2016 09:45 PM EDT Reads: 1,607
The vision of a connected smart home is becoming reality with the application of integrated wireless technologies in devices and appliances. The use of standardized and TCP/IP networked wireless technologies in line-powered and battery operated sensors and controls has led to the adoption of radios in the 2.4GHz band, including Wi-Fi, BT/BLE and 802.15.4 applied ZigBee and Thread. This is driving the need for robust wireless coexistence for multiple radios to ensure throughput performance and th...
Sep. 24, 2016 08:30 PM EDT Reads: 1,444
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. 24, 2016 08:00 PM EDT Reads: 1,654
SYS-CON Events announced today the Enterprise IoT Bootcamp, being held November 1-2, 2016, in conjunction with 19th Cloud Expo | @ThingsExpo at the Santa Clara Convention Center in Santa Clara, CA. Combined with real-world scenarios and use cases, the Enterprise IoT Bootcamp is not just based on presentations but with hands-on demos and detailed walkthroughs. We will introduce you to a variety of real world use cases prototyped using Arduino, Raspberry Pi, BeagleBone, Spark, and Intel Edison. Y...
Sep. 24, 2016 07:00 PM EDT Reads: 2,792
If you’re responsible for an application that depends on the data or functionality of various IoT endpoints – either sensors or devices – your brand reputation depends on the security, reliability, and compliance of its many integrated parts. If your application fails to deliver the expected business results, your customers and partners won't care if that failure stems from the code you developed or from a component that you integrated. What can you do to ensure that the endpoints work as expect...
Sep. 24, 2016 04:30 PM EDT Reads: 1,514
Enterprise IT has been in the era of Hybrid Cloud for some time now. But it seems most conversations about Hybrid are focused on integrating AWS, Microsoft Azure, or Google ECM into existing on-premises systems. Where is all the Private Cloud? What do technology providers need to do to make their offerings more compelling? How should enterprise IT executives and buyers define their focus, needs, and roadmap, and communicate that clearly to the providers?
Sep. 24, 2016 01:00 PM EDT Reads: 1,490
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. 24, 2016 12:00 PM EDT Reads: 781
The Transparent Cloud-computing Consortium (abbreviation: T-Cloud Consortium) will conduct research activities into changes in the computing model as a result of collaboration between "device" and "cloud" and the creation of new value and markets through organic data processing High speed and high quality networks, and dramatic improvements in computer processing capabilities, have greatly changed the nature of applications and made the storing and processing of data on the network commonplace.
Sep. 24, 2016 12:00 PM EDT Reads: 775
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. 24, 2016 11:45 AM EDT Reads: 1,045
SYS-CON Events announced today that Pulzze Systems will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Pulzze Systems, Inc. provides infrastructure products for the Internet of Things to enable any connected device and system to carry out matched operations without programming. For more information, visit http://www.pulzzesystems.com.
Sep. 24, 2016 10:45 AM EDT Reads: 1,726