TCPDUMP is a tool that analyses the TCP/IP stack and most of the networking protocols. In this video I run a NodeJS Server and use TCPDUMP to inspect and capture the packets sent to and from my NodeJS App.
0:00 Overview of my NodeJS App
2:00 TCP Dump
4:00 First IP Packet (SYN)
6:00 TCP Offloading
7:30 MSS, Window Scaling
8:30 TCP Sequences wraparound
9:30 Second IP Packet (SYN/ACK)
10:20 Third IP Packet (ACK)
10:50 Request Packet
13:20 Response Packet
16:00 Closing the Connection
17:40 Clean Run
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