How to disable ESXi firewall

If you want to disable the esxi firewall service for some reason, you can disable it with the command below.
 
esxcli network firewall set --enabled false
 
Note that when you stop this service, esxi services are opened to the outside world. so re-enable it after making the necessary changes.

How to Enable SNMPD on ESXi 6.5, 6.7

Running the below steps listed at the above link allowed me to start SNMPD in the EXSi GUI without issue

esxcli system snmp set -r
esxcli system snmp set -c YOUR_STRING
esxcli system snmp set -p 161
esxcli system snmp set -L "City, State, Country"
esxcli system snmp set -C [email protected]
esxcli system snmp set -e yes
You can change the bolded sections according to your wishes.