In my opinion, I would suggest to stay with v6.2.2 as this is very
stable, unlike v6.4.x that has bugs as outlined below. If you are not
using one of these features that I have outlined then you can proceed
with v6.4.0 or v.6.4.2 v6.4.0 - If Fortissl...
If you wanted to view the active NAT sessions, the command is "get
system session list".------------------------------AnandSr. Manager -
Network Services------------------------------
I have multiple FG-300D and FG-500D spread across the locations and the
HA are configured in A-P Please refer the following document as
reference
http://help.fortinet.com/fos50hlp/54/Content/FortiOS/fortigate-high-availability-52/HA_FGCP_ap_aa.htm
You can view real time bandwith utilization in the Fortivew but it does
not display the top bandwidth IP, it just displays all the IPs and you
need to figure out or filter by going through at a glance.