Answer :
Yes, When you close Wireshark, it saves the entire capture file, not just the packets currently displayed with the filter.
To copy the display filter: Apply the filter and then Right-click on it and select "Copy."
Also, to check if the whole capture was saved:
- Close Wireshark.
- Restart it and reload the file.
- Compare the total packet count with the displayed packets count.
So, in Copying the Display Filter, the steps are:
- In Wireshark, ensure you have applied the desired display filter to your capture.
- Right-click anywhere in the packet list pane (the area showing captured packets).
- Select Copy -> Copy Filter String. This copies the current display filter to your clipboard.
So, If the counts match, only displayed packets were saved. If different, the whole capture was saved.