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NetFlow definitions?

freemen

In NTA, what is the difference between a transmitter, receiver and an endpoint?

Can any of these be either internal or external to your network?

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davidmaltby

Transmitter = endpoint that is a source of traffic

Receiver = endpoint that is a recipient of traffic

For example, as I understand it, if you had a user on the solarwinds.com domain and they were streaming from itunes.com, their box, with its assigned IP, would be a receiving endpoint, or receiver. Likewise, if they were podcasting from their cube, their box would be a transmitting endpoint. It is also possible that any given routing device could be considered as both a transmitter and a receiver, as it both receives and transmits traffic.

Of course it depends on how you've configured NTA and your network, but yes, it is a very common scenario for them to either internal or external to your network.

Thanks,

David

freemen

Thanks, David. If you want to be able to track conversations all the way to internal (i.e. 192.x.x.x) addresses, how should you set up your NetFlow sources so that the endpoints are not always seen as only the external address of the router?

freemen

David? Is this a matter of setting up DNS correctly on my network rather than a problem with NetFlow?