If i have a Windows Hook, which function do i need to stop packets being received?

im able to hook registry accesses, file accesses etc- because i know which Win32 method is responsible a开发者_运维百科nd i can 'hook' the behaviour of this.

However, i wish to be able to 'hook'/stop packets being received when ive detected an intrusion but im not sure which Win32 function i need to 'hook'.

Does anyone know? I was getting slightly lost on the MSDN website

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The Win32 API which applications use for receiving packets is probably the "Winsock" API: see functions like socket, recv, etc.