Shark SE400 User's Guide download pdf (Page 92)

Chapter 5. File Input, Output, and

Printing

5.1. Introduction

This chapter will describe input and output of capture data.

• Open capture files in various capture file formats

• Save/Export capture files in various capture file formats

• Merge capture files together

• Import text files containing hex dumps of packets

• Print packets

5.2. Open capture files

Wireshark can read in previously saved capture files. To read them, simply select the File → Open

menu or toolbar item. Wireshark will then pop up the “File Open” dialog box, which is discussed in

more detail in Section 5.2.1, “The “Open Capture File” dialog box”.

It’s convenient to use drag-and-drop

You can open a file by simply dragging it in your file manager and dropping it onto

Wireshark’s main window. However, drag-and-drop may not be available in all desktop

environments.

If you haven’t previously saved the current capture file you will be asked to do so to prevent data loss.

This warning can be disabled in the preferences.

In addition to its native file format (pcapng), Wireshark can read and write capture files from a large

number of other packet capture programs as well. See Section 5.2.2, “Input File Formats” for the list

of capture formats Wireshark understands.

5.2.1. The “Open Capture File” dialog box

The “Open Capture File” dialog box allows you to search for a capture file containing previously

captured packets for display in Wireshark. The following sections show some examples of the

Wireshark “Open File” dialog box. The appearance of this dialog depends on the system. However,

the functionality should be the same across systems.

Common dialog behaviour on all systems:

• Select files and directories.

• Click the Open or OK button to accept your selected file and open it.

• Click the Cancel button to go back to Wireshark and not load a capture file.

Wireshark extensions to the standard behaviour of these dialogs:

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Shark SE400 User's Guide Page 92