Configuration examples nfsen nfdump fprobe?

Question

Computer networks

Hi everybody.
Now I'm setting up traffic monitoring on the gateway (ubuntu).
In fact, at the moment I need to draw according to traffic, i.e. load tx rx on 1 interface that looks into the local network.
But setting up nfsen is not very trivial, as it seemed to me.
Now I'm getting a graph of all traffic, no matter rx or tx...

that is, it's not clear how much is incoming, how much is outgoing.
I would like to ask you to share configuration examples and if you can explain a little what and what and what to edit, nfsen or fprobe configs or something else ...
Bodu is grateful for links to good guides, preferably in Russian.