Capture data to multiple files

Click on the Output tab, and the following window will open:

This window enables capture in multiple files. To configure this, write a filename in the Capture to a permanent file area. Wireshark will save the captured file under this name, with extensions 0001, 0002, and so on, all under the path that you specify in the Browse... button. This feature is extremely important when capturing a large amount of data, for example, when capturing data over a heavily loaded interface, or over a long period of time. You can tell the software to open a new file after a specific amount of time, file size, or number of packets.