Tenable Scan will dynamically open up various ports "SMTP Server Non-standard Port Detection" only on 2 out of the 16 gateways in our production environment. So far it has only happened on the secondaries.
It does this everytime even after a fresh reboot of the gateway.
All GW's are running R77.30 Jumbo 286. Anyone ever heard of this. We had a case opened a few months back but got no where. Any advice would be greatly appreciated.