One-armed sniffer deployment

Hi Guys,

As per subject above, I would like to seek your guys knowledge and advice on the deployment and information.

I have deployed 1 unit Fortigate 200D as one-armed sniffer without FortiAnalyzer, All working as planned but I'm having issue on question raised below.

Question:

1. Does on board reporting covered for Sniffer traffic or FortiAnalyzer is required?

2. How to calculate/view traffic session on one-armed deployment?