I guess what you would see in a netstat -an where you can see incoming connections listering as well as connections and number of connections ESTABLISHED, TIME_WAIT, CLOSE_WAIT to individual external hosts.
Thanks for the details. We currently do not have something like that. It shouldn't be too hard to either write a OneAgent extension, or write a script that pipes it into the OneAgent metric ingest on a regular schedule. https://docs.dynatrace.com/docs/extend-dynatrace/extend-metrics/ingestion-methods/oneagent-metric-ap...
If you don't have the resources yourself you can also contact a Dynatrace partner or the Dynatrace services team to help you out.