I noticed it hours ago, so I haven't do some experiments about it.
But after I close WinSCP and restart with the same SSH connection configuration, only one port is bounded now.
My usage is usual. Only operations are changing/refreshing local/remote working directories in explorer view and uploading/downloading files (cancelled sometimes).
I think the problem comes from time. I use WinSCP in my working environment, so the connection will be kept for weeks until my local machine has to close.
I also met the same problem months ago, but I didn't check it with netstat.
Status of these ports are all "bound" but not listening or in a connection. It looks like something like memory leak.
I will keep observing ports in following days.
martin wrote:
Thanks for you report.
Can you tall what operation causes an additional port to be bound?
Are you using some unusual settings? Like SSH tunneling?