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Packet Capture

Support > Technical Assistance > Packet Capture

When requested by Support, use this tab to capture packets for appliances that are selected in the appliance tree.

The following table describes each field on this tab.

Field Description
Maximum number of packets Enter the maximum number of packets to capture.
Filter by IP (optional) Enter the host or IP address to capture from.
Filter by port number (optional) Enter the port to capture from. For example, to capture DNS traffic, enter 53.
Bytes to capture from each packet (snap length) Enter the number of bytes (the amount of data) for each frame to capture. For example, enter 96 to capture headers only or 1500 to capture full frames.

NOTE: Configuring a large snap length will result in larger packet capture file sizes.
Additional filter options Enter other options to filter the capture. For example, proto 17 src
Enable circular storage Select this check box to limit the amount of data to store by setting a maximum number of files and maximum file size for the capture. For example, set the Number of files to 5 and Max size per file to 100 (MB). Once the size limit is reached for a file, a new file will be written. Once the maximum number of files is reached, the oldest file will be overwritten.
Number of files If you enabled circular storage, enter the maximum number of files that can be stored for this packet capture.
Max size per file If you enabled circular storage, enter the maximum file size that can be stored for this packet capture.
Command preview Displays the progress of the packet capture.

Click Run to initiate the packet capture.

Click Stop to cancel the packet capture.

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