NetVizura Blog

Multicast accounting configuration using Flexible NetFlow - Part Two

Multicast-NetVizura
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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Multicast accounting configuration using Flexible NetFlow - Part One

Multicast-accounting-configuration-using-Flexible-NetFlow
​ 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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5 ways to use NetFlow Analyzer for Network Security

Netflow-analyzer-network-security-2
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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Main Reasons for Automated Network Security Protection

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

Social-media
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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How to rotate Scrum Master role?

Scrum-master
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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NetVizura VS NFSEN - Paid vs Free Solution tested

NetFlow-Analyzer-Netvizura
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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Free or Paid NetFlow Analyzer?

NetVizura-Free-vs-Paid-solution-2
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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All you need to know about Manual Deduplication

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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When to use Network Traffic Sampling

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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Flow export configuration on Juniper network devices

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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Flow export configuration on Cisco network devices

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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Exporting NetFlow Traffic to Multiple Servers

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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2 Ways of Exporting Without Netflow Capable Device

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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How to solve duplicated NetFlow caused by multiple exporters

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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How to configure devices and not duplicate NetFlow

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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Top 5 DevOps commands for PostgreSQL

Top 5 DevOps commands for PostgreSQL

Searching for these SQL commands is tempting every time, whether you have done it before.To avoid collecting these commands from different sources and wasting a lot of time, we have collected them all here to be reachable and available for everyone, anytime. These are the ones we needed and considered to be very useful...

 

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How to choose a NetFlow Analyzer?

How to choose a NetFlow Analyzer?

As you probably noticed, interest toward NetFlow has sharply risen in the previous years. This is due to the fact that its dataset provides much more detail and effective traffic analysis than simple SNMP monitoring. It is also lightweight and it does not require to store big data and intrude on people's privacy as in the case of Deep-Packet Inspection. For this reason, NetFlow has expanded its application beyond networking and it is now used even by system and security admins.

 

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