I am failing a PCI scan because UDP Port 500 is showing as open|filtered on Nmap scans. I see that this is the ISAKMP service. However I do not have any IPsec connections defined, I have Cisco VPN disabled, and I even went so far as to create a Deny/Drop firewall rule for everything incoming hitting port 500, put it at the top, and that still doesn't work.
How do I find out what service on the XG has this port open and then close it?
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