ZyXEL Communications unified security gateway 46.3.1 The Packet Capture Files Screen

Chapter 46 Diagnostics

Table 221 Maintenance > Diagnostics > Packet Capture (continued)

LABEL	DESCRIPTION
Number Of Bytes To	Specify the maximum number of bytes to capture per packet. The
Capture (Per Packet)	ZyWALL automatically truncates packets that exceed this size. As a
	result, when you view the packet capture files in a packet analyzer,
	the actual size of the packets may be larger than the size of
	captured packets.
Capture	Click this button to have the ZyWALL capture packets according to
	the settings configured in this screen.
	You can configure the ZyWALL while a packet capture is in progress
	although you cannot modify the packet capture settings.
	The ZyWALL’s throughput or performance may be affected while a
	packet capture is in progress.
	After the ZyWALL finishes the capture it saves a separate capture
	file for each selected interface. The total number of packet capture
	files that you can save depends on the file sizes and the available
	flash storage space. Once the flash storage space is full, adding
	more packet captures will fail.
Stop	Click this button to stop a currently running packet capture and
	generate a separate capture file for each selected interface.
Reset	Click this button to return the screen to its last-saved settings.

46.3.1 The Packet Capture Files Screen

Click Maintenance > Diagnostics > Packet Capture > Files to open the packet capture files screen. This screen lists the files of packet captures stored on the ZyWALL or a connected USB storage device. You can download the files to your computer where you can study them using a packet analyzer (also known as a network or protocol analyzer) such as Wireshark.

Figure 430 Maintenance > Diagnostics > Packet Capture > Files

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	ZyWALL USG 20/20W User’s Guide