Ntop+Nprobe: the floods decrease to zero in some minutes

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Dear, I have a server with Debian 10 + Ntopng 3.9 + Nprobe 8.7 in
"collector mode".

My config is:

/etc/ntopng/ntopng.conf:

-G=/var/run/ntopng.pid
-e=
-i="tcp://127.0.0.1:5556"
-w=3000
-m=172.31.10.0/24,179.0.141.0/24
-n=1
-S=
-d=/var/lib/ntopng
-q=
--community

/etc/nprobe/nprobe.conf:

-i=none
--collector-port=2055
--zmq=tcp://*:5556
-n=none
-T=@NTOPNG@
-g=/var/run/nprobe.pid

I start both service with "systemctl nprobe start" and "systemctl ntopng
start".

Everything is OK, I can see a lot of flows in Ntopng interface.

But after some minutes, the flows decrease and they come to 0 (zero), and
this value remains just like this forever.

Please can you help me ???

Thanks a lot !!!

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<div dir=3D"ltr">Dear, I have a server with Debian 10=C2=A0+ Ntopng 3.9=C2=
=A0+ Nprobe 8.7 in &quot;collector mode&quot;.<div><br></div><div>My config=
 is:</div><div><br></div><div>/etc/ntopng/ntopng.conf:</div><div><br></div>=
<div>-G=3D/var/run/ntopng.pid<br>-e=3D<br>-i=3D&quot;tcp://<a href=3D"http:=
//127.0.0.1:5556">127.0.0.1:5556</a>&quot;<br>-w=3D3000<br>-m=3D<a href=3D"=
http://172.31.10.0/24,179.0.141.0/24">172.31.10.0/24,179.0.141.0/24</a><br>=
-n=3D1<br>-S=3D<br>-d=3D/var/lib/ntopng<br>-q=3D<br>--community<br></div><d=
iv><br></div><div>/etc/nprobe/nprobe.conf:</div><div><br></div><div>-i=3Dno=
ne<br>--collector-port=3D2055<br>--zmq=3Dtcp://*:5556<br>-n=3Dnone<br>-T=3D=
@NTOPNG@<br>-g=3D/var/run/nprobe.pid<br></div><div><br></div><div>I start b=
oth service with &quot;systemctl nprobe start&quot; and &quot;systemctl nto=
png start&quot;.</div><div><br></div><div>Everything is OK, I can see a lot=
 of flows in Ntopng interface.=C2=A0</div><div><br></div><div>But after som=
e minutes, the flows decrease and they come to 0 (zero), and this value rem=
ains just like this forever.</div><div><br></div><div>Please can you help m=
e ???</div><div><br></div><div>Thanks a lot !!!</div></div>

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