We use an alias for getting information how many established connections are for sshd process name. Recently we updated all our packages. Even we have lots of connections to sshd server, they are not reported by process name in netstat. Process name appears as a figure, the first one is 0 and increments by 1.
I am using netstat command then grepping by process name then by port as root. Listen ports shows correctly PID/process name, but for Established connections it shows PID/number. Process name is missing for established connection.