Michael Patterson : Advanced NetFlow Traffic Analysis
Michael Patterson
Founder and Product manager for Plixer's Scrutinizer NetFlow and sFlow Analyzer as well as Flow Analytics.

A Massive Wave of Cybercrime Coming

Get ready for biggest year yet in cybercrime.  We have learned over the last few years that hackers have honed their penetration...

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Coming of the Mobile Advertising Age

Many of you probably know about the yearly Internet Trends report that comes out from Mary Meeker.  There is always a lot...

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Procera Helps Carriers Shape Even Encrypted Traffic

One of the biggest challenges for network operators is certainly dealing with the growth of network traffic in a margin-compression environment. Video...

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MultiTech Intros New 4G-LTE Cat 1 and LoRa Solutions

For anyone who worked with PCs during the 1980s they remember MultiTech as a major player in the world of modems. In...

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Cybersecurity and the Terrible, Horrible, No Good, Very Bad Week

There are perhaps four major cybersecurity incidents in my mind which are world-changing. The first is the OPM data breach which allowed...

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Value-Added Services in the VoLTE World - Enterprises

From an enterprise value-added services perspective, voice conferencing could be a good one.  Enterprises still need to host conferences, so conferences that...

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Value-Added Services in the VoLTE World - Leveraging the Device

Looking at the subscriber from a different perspective, that is, one who is going to use the mobile device as an on-ramp...

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A Massive Wave of Cybercrime Coming

September 29, 2016

Get ready for biggest year yet in cybercrime.  We have learned over the last few years that hackers have honed their penetration skills to the point that any targeted company can easily become a victim.  Most business owners have accepted that being connected to the Internet means that they can and probably will be compromised regardless of the defensive measures taken.  It is more than just a game of probability. 

DNS Firewall

June 4, 2016

I don’t think I’ve ever spoken with a company – at least that I can remember that didn’t have a firewall in place.  Cisco ASA (Fire Power), Palo Alto, Checkpoint and Fortinet seem to be the more popular ones.  Barracuda, SonicWALL and StormShield we hear about as well.  These systems do a relatively good job at protecting our internal jewels.  However, what I find missing in most solutions, is their ability to stop DNS tunneling and other tactics that abuse the DNS protocol.

Security Analytics - Network as a Sensor

April 4, 2016

Security is going through an evolution in IT. The new assumption is that some malware will make it onto the network. This forces the security team to consider the actions they will need to take when following up on an event.  What details will they want access to? What devices on the network gather this information? How will they want to display it?

Cisco Cyber Threat Defense : 4 Tell-Tale Signs of Data Exfiltration

March 19, 2016

A potential threat could come from anywhere at any-time and it doesn’t have to start from the Internet.  Many threats are initiated internally by infected handhelds and laptop devices which walk right past the firewall.  Anti-virus has become nearly ineffective against targeted threats.  Even next generation firewalls aren't stopping the outbound connections created by unwanted data exfiltration. 

Phishing Attack Training

January 13, 2016

If you are being repeatedly targeted by a phishing attack, chances are you will eventually click. And if you end up infected, often times your computer will show no obvious signs of the virus or bot. What can you do?

Cisco nvzFlow Reporting

December 22, 2015

There has been lots of excitement this week at our company since the release of Cisco’s nvzFlow.  Companies which utilize the Cisco ASA for VPN access have the option to upgrade to AnyConnect 4.2.  With this latest release admins can configure remote users to export IPFIX right from their laptops to the flow collector for real time and future analysis.


Splunk NetFlow Support : Vendor Comparison

November 10, 2015

You are in luck because you have several options to get Splunk NetFlow support.  I know of three however, there are probably more. This post will list them all and discuss the benefits of each.

Software Defined Network: 8 BIG Benefits

October 23, 2015

Are you looking to get up to speed on the benefits of a Software Defined Network? This post will save you some time by providing 8 areas where SDNs promise to deliver.  It will also provide you with a few links where you can learn even more about the technology.

IPFIX Flow Direction and Packet Counters

July 8, 2015

In the world of NetFlow and IPFIX, flow direction is a topic that can confuse some of the best technical minds. It is an important concept in relation to routers because where information (e.g. byte counters) is gathered can have a significant impact on perceived accuracy.  This is sort of 3 part blog.  Although it isn't totally necessary, it might help the reader to understand a different type of flow directionality first as posted in my other blog. 

Monitoring DNS Traffic for Security Threats

May 13, 2015

As you are probably aware, the Domain Name Server (DNS) plays an important role in how end users connect to the internet. In order to gain some background before reading this blog, you may want to read my post on An Overview of DNS. Once you have a bit more technical information on the DNS behaviors, I think you will find this post more informative.

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