Hi Nikhil,

Latest stable version is 2.2, please consider using it (see
http://packages.ntop.org/centos-stable/7/x86_64/Packages/ and
http://packages.ntop.org/centos-stable/)

-F switch enables flow export to either elastichsearch or MySQL. From the
docs:

[--dump-flows|-F] <mode>            | Dump expired flows. Mode:
                                    | es     Dump in ElasticSearch database
                                    |        Format:
                                    |        es;<idx type>;<idx name>;<es
URL>;<http auth>
                                    |        Example:
                                    |        es;ntopng;ntopng-%Y.%m.%d;
http://localhost:9200/_bulk;
                                    |        Note: the <idx name> accepts
the strftime() format.
                                    | mysql  Dump in MySQL database
                                    |        Format:
                                    |
 mysql;<host|socket>;<dbname>;<table name>;<user>;<pw>
                                    |
 mysql;localhost;ntopng;flows;root;

It is not necessary to use the -F to have a fully functioning ntopng.
Coarser-grained statistics are recorded even without it and include
interface  and host traffic, application protocols, and so on. Use the -F
if you have specific needs to drill down historical flows.

Simone

On Sat, Feb 13, 2016 at 11:41 AM, Nikhil Kala <[email protected]>
wrote:

> Hello,
>
> I have install NtopNG version 2.0 on Centos 7. But I am not able to enable
> the historical option. It say start Ntop NG with -F option. How I can
> enable the historical option?
>
>
> --
> Nikhil
>
> _______________________________________________
> Ntop mailing list
> [email protected]
> http://listgateway.unipi.it/mailman/listinfo/ntop
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