1 hour 43 minutes
hi, everyone. Let's get started with our next module regarding that flow.
So what is net flow exactly?
It is a network protocol developed and introduced by Cisco, that collects and monitors outgoing and incoming I p Network traffic from network devices.
Net flow. Coming the case on you to pee default port 2055
but can also be used on port numbers like 99 5 99 6
90 to 5 and a few others.
A net flow collector analyzes thes traffic to determine where the traffic is from where it is going and provides useful, detailed information off The types of services and protocols are running in the network.
You're probably thinking this kind of sounds like S and M p.
The S and P continues to be the most relevant option for real time monitoring.
Net flow can provide information on what services and applications are running on your network and by whom.
Hence it could be helpful in complex network environments.
There are two versions of net flow, which are versions five and version nine.
Version five analyzes only I P V four traffic flows and is a popular version used in many different vendor equipment.
Merchant nine includes version five, never captures and includes analysis on enhanced traffic clothes for features that Version five is unable to do,
such as supporting I P v six
and PLS and provides slightly more information than Version five.