_Please note that **AllowRoot=1** option is required in order to execute correctly OpenVPN checks and others._
Also increase the **Timeout** value at least to **5**, otherwise some checks will fail.
Then import xml templates in Zabbix and add your pfSense hosts.
If you are running a redundant CARP setup you should adjust the macro {#EXPECTED_CARP_STATUS} to a value representing what is CARP expected status on monitored box.