Hello,
I had the same issue.
Problem solved after adding rule:
{
"direction": "inbound",
"name": "AppServer",
"port": "7116",
"porttype": "dst",
"protocol": "tcp"
},
{
"direction": "inbound",
"name": "GRE",
"port": "15000:15999",
"porttype": "dst",
"protocol": "tcp"
}
And restarting Vcenter.