NetVizura Blog

NetFlow Analyzer

NetFlow Analyzer

Vladimir Stankovic

5 Reasons for Using NetFlow

Network traffic and network complexity have substantially increased by globalization, virtualization, widespread use of personal devices (BYOD), DDoS attacks and similar trends, bringing up new security issues. Traditional approaches to network monit...
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netflow netflow analyzer network monitoring bandwidth monitoring
1209 Hits
Nemanja Ninkovic

Multicast accounting configuration using Flexible NetFlow - Part Two

As the problem of multicast flow analysis was addressed in our previous blog , we have distinguished two scenarios – input and output flow accounting configuration. Therefore, during the following demonstration, we will investigate how NetFlow multic...
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netflow netflow analyzer network monitoring bandwidth monitoring
1247 Hits
Nemanja Ninkovic

Multicast accounting configuration using Flexible NetFlow - Part One

​ With the rapid proliferation of video services, particularly video streaming, deployment of multicast services demands an appropriate monitoring to be in place in order to keep track of this traffic type. Adequate and comprehensive monitoring is pa...
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1373 Hits
Vladimir Stankovic

5 ways to use NetFlow Analyzer for Network Security

The frequency of cyber attacks increased a variety of vectors (e.g. unprotected IoT device botnets, Attack as a Service software, SSL-based attacks, etc.) and their overall sophistication has made them a serious threat to networks around the World. G...
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  1911 Hits
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netflow netflow analyzer network monitoring bandwidth monitoring
1911 Hits
Milica Pajazitovic

Main Reasons for Automated Network Security Protection

So, lets analyze some facts... Looking at the usual work tempo and time consuming activities, it is easy to note significant growth of all apps and programs that can save valuable time in different areas.  Same thing happens in network moni...
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netflow netflow analyzer network monitoring bandwidth monitoring
1595 Hits
Nemanja Ninkovic

Specific traffic patterns monitoring (Facebook, YouTube, Twitter...) that will make your life easier

Enterprise network administrators are facing an increasing number of challenges when it comes to network monitoring. Business critical services must be clearly distinguished from the other traffic classes and always monitored in terms of specific QoS...
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netflow netflow analyzer network monitoring bandwidth monitoring
1644 Hits
Vladimir Stankovic

How to rotate Scrum Master role?

Sometimes it may happen that your team finds itself without a dedicated Scrum Master, so very few things are done to improve process of work, which leads to productivity stagnation and decline.   Typically some members spontaneously take over so...
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netflow netflow analyzer network monitoring bandwidth monitoring
1391 Hits
Milica Pajazitovic

NetVizura VS NFSEN - Paid vs Free Solution tested

We have made a short comparison between paid NetVizura and free NFSEN software for NetFlow Analysis and here is what we have concluded... Obviosly, small companies that have only few exporters and not a lot of traffic to monitor, would more ofte...
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  1516 Hits
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netflow netflow analyzer network monitoring bandwidth monitoring
1516 Hits
Vladimir Stankovic

Free or Paid NetFlow Analyzer?

Let's say you are a network admin responsible for managing growing or distributed network, that you have a need for a more in-depth monitoring of your traffic and events, and now you need to make a first decision about which type of tool you would li...
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  1405 Hits
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netflow netflow analyzer network monitoring bandwidth monitoring
1405 Hits
Sinisa Uskokovic

All you need to know about Manual Deduplication

In our previous posts we have talked about duplication problem and possible solutions. We have explained how to set up automatic deduplication and hopefully this was helpful. Now we are going to go one step further and explain how to set up manual de...
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netflow netflow analyzer network monitoring bandwidth monitoring
1188 Hits
Vladimir Stankovic

When to use Network Traffic Sampling

​In our past blog posts we have already wrote about NetFlow configuration and exporting settings for various situations that you might find yourself in. Now we will go one step further in Flow Analysis and try to help you make up your mind whether to...
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  1315 Hits
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netflow netflow analyzer network monitoring bandwidth monitoring
1315 Hits
Nemanja Ninkovic

Flow export configuration on Juniper network devices

Juniper first started with Jflow support, similar and compatible to Cisco Netflow standard, and later added support for vendor-neutral IPFIX. Flow export in Juniper terminology refers to inline active flow monitoring. This feature is implemented dire...
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netflow netflow analyzer network monitoring bandwidth monitoring
3238 Hits
Nemanja Ninkovic

Flow export configuration on Cisco network devices

The topics in our previous posts were mainly related to flow optimization and configuration in terms of achieving optimal results on the flow collector side. The diversity of routers and L3 switches on the market as well as their support of different...
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netflow netflow analyzer network monitoring bandwidth monitoring
2252 Hits
Sinisa Uskokovic

Exporting NetFlow Traffic to Multiple Servers

Until now we have wrote about different ways and options for exporting and collecting NetFlow traffic. Today we will go one step further in this area...  Often it is necessary to export NetFlow traffic on more than one server (production, develo...
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  1461 Hits
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netflow netflow analyzer network monitoring bandwidth monitoring
1461 Hits
Sinisa Uskokovic

2 Ways of Exporting Without Netflow Capable Device

​There are situations when you need to get NetFlow statistics, but having a device that does not export Netflow can be a bummer. There is always a solution...  When a network device is not supporting NetFlow protocol, you can use a server with a...
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netflow netflow analyzer network monitoring bandwidth monitoring
1475 Hits
Vladimir Stankovic

How to solve duplicated NetFlow caused by multiple exporters

We have already wrote about configuration duplication in the previous post How to configure devices and not duplicate NetFlow.   Now we will help you understand and solve exporters deduplication - what to do when same flow is exported by differe...
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  1497 Hits
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netflow netflow analyzer network monitoring bandwidth monitoring
1497 Hits
Sinisa Uskokovic

How to configure devices and not duplicate NetFlow

This post gives a short explanation of NetFlow duplication problem, why it is important and how to overcome it. Network admins think about their data and if it is actually correct and deduplicated. And rightfully so! This should not be on their list of concerns - NetFlow analyzer should include out-of-the-box solution to this problem. Unfortunately, this is often not the case because exporting and processing NetFlow data depends on the network and its complexity.

In general, there are two ways duplication can occur:

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