Monitoring pfSense using Zabbix: some doubts about snmp, net-snmp and zabbix agent

[mauro.tridici]

Dear Users,

I would like to monitor pfSense using an already existing Zabbix server.
I just set up the standard SNMP daemon on pfsense and I can see some relevant data on Zabbix server.

Now my question is: I simply need to check the hardware resources usage (cpu, ram, disk and os on) and collect statistics about interfaces traffic.
Is the SNMP daemon enough to achieve my goal?

What are the differences between using SNMP, NET-SNMP or ZABBIX AGENT?
What your suggestions about?

Thank you in advance,
Mauro