- Navigate to Services | SNMP.
- Check the Enable SNMP Daemon checkbox, as shown in the following screenshot:
- Leave the Polling Port set to the default value of 161.
- Optionally, enter a location and contact name in the System Location and System Contact edit boxes.
- In the Read Community String edit box, enter a passphrase. This string is roughly equivalent to a password, restricting access to querying SNMP to devices specifying the correct community string.
- In the SNMP Modules section, specify the modules to be queried by checking the appropriate checkboxes.
- In the Interface Binding section, choose the interfaces on which to listen (the default value is All).
- When you are done making changes, click on the Save button.
By enabling SNMP on pfSense, the system can now query vital SNMP information from different SNMP agents.