Monitor : Monitor > Packet Capture

Monitor > Packet Capture
All Palo Alto Networks firewalls have a built-in packet capture (pcap) feature you can use to capture packets that traverse the network interfaces on the firewall. You can then use the captured data for troubleshooting purposes or to create custom application signatures.
CAUTION: 
The packet capture feature is CPU-intensive and can degrade firewall performance. Only use this feature when necessary and make sure to turn it off after you collect the required packets.
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