“Read” can mean reading from a file and interpreting the on-screen output. To read tcpdump output from a file captures.pcap, use tcpdump -r /path/t...

If you want to capture five packets on the network interface eth0, use tcpdump -i eth0 -c 5. The example below demonstrates the capture of five pac...

Locate the packet capture (PCAP) file. Suppose it’s at /path/to/captures.pcap. Now, use the command tcpdump -r /path/to/captures.pcap.

Use the options -x, -xx, -X, and -XX. Note that when you capture HTTPS traffic using tcpdump, the output appears gibberish because tcpdump captures...

Ensure you use the -w switch to save your tcpdump output as a .pcap file, which you then open in Wireshark. Check out our Wireshark Cheat Sheet for...

Although Wireshark and tcpdump are for capturing data packets over a network, Wireshark is a graphical user interface, while tcpdump is a command-l...