Zabbix proxy on Opnsense firewall

[NetCyber]

Hello Professionals,

I'm new to Zabbix and Opnsense world. Probably a very small question here, I got the design to implement and need help to understand the benefit of using Zabbix proxy on Opnsense firewall. I installed the OS-Zabbix6 plugin and need to configure that, what else changes I need to perform on Firewall?

I'm going to implement the Individual Zabbix server on a Debian virtual machine, and will configure the Opnsense Firewall with Zabbix Proxy. This Firewall will be connected to the Customer's Firewall to monitor their environment.

Now I'm looking for a help to understand the reason of implementing Zabbix proxy. In terms of security, remote monitoring, and what else?

Thank you very much in advance! :)