Lab exercise

The steps to capture the normal TCP connection flow (a sample program is provided as part of this book) are as follows:

  1. Open Wireshark, start capturing the packets, and choose display filter tcp.port==8082.
  2. Compile the Java program TCPServer01.java using the javac command:
    bash$ ~ javac TCPServer01.java
  3. Run TCPServer01 using the java command:
    bash$ ~ java TCPServer01
  4. Verify the server is listening on port 8082:
    bash$ ~ netstat -an | grep 8082
tcp46      0      0  *.8082                 *.* LISTEN
  5. Compile the client program Client0301.java using the javac command:
    bash$ ~ javac Client0301.java
  6. Run the client program:
    bash$ ~ java Client0301
  7. View and analyze the packet in Wireshark.
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