Netflow Collector using ELK, Logstash, Kibana filebeat on ubuntu 20.04

Hi All,
I'm trying to configure netflow collector and analyzer using Elasticsearch,logstash and Kibana.I configured the all the three in ubuntu version 20.04. The modules are up and running. But the configuration part to to unite modules is somehow difficult. I tried varies config bu none was successful.Please help me to configure Neflow collector. or is there opensource tool to for neflow on linux distros. I have made changes on

filebeat.yml
elasticsearch.yml
logstash.yml
kibana.yml
netflow.yml

All are running but not showing any data.

Netflow is a type of data record streamed from capable network devices. It contains information about connections traversing the device, and includes source IP addresses and ports, destination IP addresses and ports, types of service, VLANs, and other information that can be encoded into frame and protocol headers. With Netflow data, network operators can go beyond monitoring simply the volume of data crossing their networks. They can understand where the traffic originated, where it is going, and what services or applications it is part of.

 

I copy-pasted

Code:

opensource tool to for neflow on linux distros

to Internet Search Engine. Seems to find quite a few.

 

Yes I did the same but after some study I made some changes and I can the server logs. But flow logs are not there. I tired of making changes.