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Most recent posts by "Oliver Kleineberg"

SCADA Security and Fault Tolerance - A Beautiful Pairing!
Blog Category: Industrial Security

Posted by: Oliver Kleineberg on May 24, 2012

In 2010, the whole industrial automation world was stirred by the sudden appearance of the now infamous Stuxnet malware. In 2011 there were more publicly disclosed vulnerabilities than in the previous decade, with attack code readily available for more than a third of them. The need for improved cyber security for industrial networks has never been more apparent. Besides this targeted need, however, there is another reason why cyber security technology like Tofino is needed. That reason is the broader need for reliable networks that are used in mission-critical applications.


VLANs and Industrial Security – The Underestimated Helper
Blog Category: Industrial Security

Posted by: Oliver Kleineberg on August 09, 2012

Virtual Local Area Networks (VLANs) should not be counted on as a security feature of modern managed Ethernet switch networks. This is now common knowledge, both in IT departments and also in the Industrial Control Community. Indeed in Eric Byres’ article Why VLAN Security isn't SCADA Security at all he points out that switches with VLANS are not firewalls. But are VLANs the boogeyman of industrial control system security...or are they underestimated helpers? This article examines that question in detail.


4 Important Things to Know about IEEE 802.1 & Time Sensitive Networking
Blog Category: Industrial Ethernet

Posted by: Oliver Kleineberg on April 27, 2016

This week a major step forward in Industrial Ethernet is being demonstrated at the Belden Booth at the Hanover Fair (Hall 9, Booth D11) in Germany.

It’s a live demonstration of Hirschmann Ethernet switches using the IEEE 802.1 time sensitive networking (TSN) standard to allow the simultaneous transmission of critical control plus best-effort background traffic. This demo signals the delivery of an important capability which is deterministic, time-critical packet delivery.

It transforms standard Ethernet from an “I’ll get it there as soon as I can” communications technology to one that provides timing guarantees for mission-critical applications.

Time sensitive networking will play an important role in communications infrastructure as greater numbers of devices are connected under the Industrial Internet of Things (IIoT) and Industry 4.0 revolution. Read on to learn the 4 important things you need to know about it.


3 Ways to Use Industrial Firewalls for Defense in Depth
Blog Category: Industrial Security

Posted by: Oliver Kleineberg on June 01, 2016

An important best practice for industrial security is to implement a Defense in Depth strategy. With this approach, multiple layers of defense are implemented, in contrast to just one defense mechanism, such as a single firewall.

A complementary best practice used as part of a Defense is Depth strategy is Zones and Conduits, as defined in the ISA IEC 62443 standard. This involves segmenting the network into zones of devices with similar security requirements and using conduits to restrict the communication between zones.

Using Zones and Conduits as part of a Defense in Depth strategy is not a new concept. If you look at castle construction for any culture, you will see that layers of security were built into their design to contain attackers and make their movements more difficult.

Industrial firewalls play an important role in implementing both Defense in Depth and Zones and Conduits. Let’s look at some examples of how they do that.


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