Jamie Lee, Author at Plixer

Enabling NetFlow on a vSwitch

With the increasing popularity of vSwitches; some of you may be asking “how do I go about enabling NetFlow / IPFIX in a virtual environment?” Well today, I’m going to help answer that question for not one, but 3 of the most popular virtual switches: OpenVSwitch, VMware vSphere, and the Cisco Nexus 1000v. Read more

Network Operations

Username NetFlow Reporting

05.25.13 - Jamie Lee

Username NetFlow Reporting is a hot topic since the Cisco Visual Networking Index (VNI) report in late May. By 2016, Cisco’s forecast predicts that there will be “nearly three networked devices per capita”. Firewall vendors like Dell-SonicWALL and Palo Alto are also paying attention. Network admins are asking “Who is authenticating all of these devices onto the network?” Read more

Network Operations

Cisco ASA Cyber Threat Defense: Part 2

04.17.13 - Jamie Lee

The Cisco ASA is a great tool for Cyber Threat Defense. In part one of this blog I described the 3 components of Cisco’s threat defense solution. In this half I will be showing you some more benefits of the solution, and how it can be used in correlation with other technologies to give you end to end visibility in your network.

Network Operations

Calculating NetFlow Volume

03.26.13 - Jamie Lee

Often these days, we’re asked for a general rule of thumb or guidelines that can help with calculating NetFlow Volume. How much disk space should an average NetFlow Deployment consume. One of the biggest concerns is that exporting NetFlow (or one of its cousins) for Network Performance Analysis will have a drastic impact on the available bandwidth, CPU overhead on devices, or on the hard drives storing it. This is simply not true.

Network Operations

Intrusion Detection: Event Correlation

03.08.13 - Jamie Lee

Network Intrusion Detection, Cyber Threats, Advanced Persistent Threats (APTs), Polymorphic Malware, Event Correlation – today all of these terms are foremost on many IT Security Professionals minds. What cyber security layer can we add to our existing protection efforts that will bring us greater peace of mind? Read more