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Edited text of question<br />

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The answer for your question depends on the OS you are using. For the DOS, for example, you have to use/write the packet driver which differs for different network cards.<br />

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The answer for your question depends on the OS you are using. For the DOS, for example, you have to use/write the packet driver which differs for different network cards.


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Please give us more information. What's your OS, what do you want to do etc.<br />

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Please give us more information. What's your OS, what do you want to do etc.


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I want to do it in the unix os. I'm using solaris 2.5<br />

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I want to do it in the unix os. I'm using solaris 2.5


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How to write a network layer program ?<br />
(Examples : a simple IP packet filtering program )
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How to write a network layer program ?
(Examples : a simple IP packet filtering program )

Network layer program ?

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.