How to periodically wipe ntop-ng data

[SipriusPT]

Hey,

I am using ntop-ng in pfsense and as expected it accomulates lots of data, so my question is if there is a way through ntop-ng or pfsense to wipeout that data through crontab for example.

The only way that I have to wipe this is in ntop-ng settings and doing a manual wipe.

Anyone knows a safe way to do this?