I had a request from an engineer to monitor an instance of an SFTP server. Ping wasn't the answer because the server could be up, but not the service. NetPath seemed to be an obvious answer. It worked fine until recently when the "owner" of the server contacted me and asked why SolarWinds was hitting his box 30,000+ times a day. When I looked (wireshark and firewall logs) I see that when the NetPath fired (once per 10 minutes) it would send hundreds of transactions.
I thought NetPath basically said are you there and responding on the port I'm using - if it got a proper response NetPath would turn green - if it did not it would turn red.
Why so many transactions?
How can I monitor that SFTP service without so many transactions?