Highlight that applied Filename filters are used
|Filename filters, Directory listing filters
|Operating system type:
|Operating system version:
I suggest you should add some sort of highlighting, indicating that a "Filename filters"/"Directory listing filters" are used in the view.
For instance the frame around the remote directory listing could have a red/orange colored line in the frame or a slightly modified background with large grey text saying that a filter is used, or just a striped background.
I forgot that I had a filter and started to investigate why I couldn't find the files on the remote server, then I realized I had applied a filter matching that file I was looking for. :-)
I also assume there might be other scenarios where applied settings might be good to highlight in the UI.