Getting know - TCP handshake and messages

[0x00pf (pico)]

You can take a look here… Not exactly what you want but may be interesting

How do those hacking tools work? The Art of Port Scanning

LEVEL: Beginner Port scanning is the process of finding out which ports are open in a given machine. An open port usually means a program listening on that port, and a program means bugs, and bugs means exploits… roughly :). OK, everybody in the world uses nmap for this task. It would be stupid to write your own port scanner when such an advanced and polished tool is available. However, knowing how nmap does its magic and also, why not?, write your own simple scanner just for fun, are two valu…