The following service endpoints are used for exmon services. 

These endpoints might be blocked by a local firewall and need to be allowed so that exMon DM services will work.

exMon DM Client uses Login Web Service and DB Service.

To test connection from a client, open Windows Powershell and execute the following commands

Test-NetConnection -ComputerName -Port 1433

Test-NetConnection -ComputerName  -Port 443