MicroNugget: What is Netflow?

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In this video, Keith Barker covers NetFlow and how to understand traffic patterns that are coursing through your network. He sets up and uses the common tool that inspects requests, sees who the top talkers of a network are, and figures out what the top destinations are.
When faced with network management's central challenge of understanding what's going through the network, you won't find a better tool than NetFlow. When you need to compare the amount of HTTP traffic to DNS traffic, or see how much ICNP traffic you're getting, or who your network's top talkers are and what their destinations are, you need NetFlow. Using NetFlow can provide you with a security baseline of your traffic and make finding anomalies that much easier. It can change anticipating a new application's impact on traffic patterns from a shot in the dark to an accurate estimate. You'll follow along as Keith configures NetFlow on-screen to view ports, protocols, versions and address configurations, then exports the data to a tool specially made for visualizing the data, creating graphs, and producing reports.
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[@JesusRodriguez-bc3bu]

My CCNP Cisco books does not cover NetFlow at all, but Keith has made super easy to understand through a basic example. I feel better now for my CCNP Routing exam. Thanks Keith..!!

[@user-yh8ce7tg8l]

Can't get used to Keith's voice at normal speed! It is like listening to an entirely different guy. You always sound so cheerful and peppy at x 1.3 and 1.6.

[@ahmedabduljabar6269]

Keith are simply amazing with MicroNugget he give us too much information in few moments .. thanks keith

[@arsimzeka4200]

What a powerfull video Keith, thanks for sharing it with us :)

[@trendyniro]

Thank you Keith. You're a superb educator!

[@D-J-Q]

Thanks Keith! Always been my hero.

[@ramasubramaniansethuraman3881]

very informative video! Thanks!

[@francloiseido3049]

Thank you Keith. :)

[@IceSmacker123]

Thanks a lot Keith!

[@arjhosmena1562]

Thanks!

[@sas10x39]

how about for virtual interface sir?

[@alexilaiho8534]

is netflow for CCNP level guys? what skills to study for network engineer CCNA level?

[@duncannapier5351]

Is netflow data, transactional data or session data?

[@manilaboy1vic]

can the export soure int be loopback 0??

[@GoodGameOKC1]

Yes

[@adedejiemmanuel1]

Hi Keith,
So, is the NetFlow a type of protocol analyzer?

[@cbtnuggets]

Hi Azza, NetFlow is a protocol that collects a data stream of information. For a NetFlow analyzer, the program can disseminate and parse the information. It is similar to SNMP, where the information can be collected, but it will need another program to parse into something usable by an admin. Hope that helps!

[@adedejiemmanuel1]

@@cbtnuggets Thank you.

[@ldavader2704]

Which free software can be used as an alternative to scruitinizer?

[@Lov1atar]

Manageengine NetFlow Analyzer has free version for 2 interfaces

[@responsesu]

Hi keith , plz confirm this micro nugget part of which nugget training video like CCNA SEC , CCNP ?

[@keithbarker4353]

Hello Suresh-
In the CBTNuggets.com course:
Cisco CCNP Security 300-206 SENSS
The 15th video in that course is about NetFlow.
Cheers,
Keith

[@responsesu]

Thanks keith for ur valuable support...

[@PoonamSingh-df3yl]

3

[@allenabishek1478]

you talk too fast but the content of your video is really good.

[@jonathansun3325]

E.