esxcli system snmp set –communities password
esxcli system snmp set –enable true
esxcli network firewall ruleset set –ruleset-id snmp –allowed-all false
esxcli network firewall ruleset allowedip add –ruleset-id snmp –ip-address 192.20.0.0/16
esxcli network firewall ruleset set –ruleset-id snmp –enabled true
/etc/init.d/snmpd restart
This is just for my reference but you can message me if you need help. Thank you!