How to get the IP header of packet going through an interface

thanh · 06-12-2004, 12:01 PM

Hello every one.

I have setup a computer with two interfaces, and I use that as a router for my small LAN. I want to write a program to records all the host that going through the interface that connect to the Internet.

So I think I need an API that report back the headers of those IP packets that going through an interface. I made several searchs through the program networking materials, but I cannot find the right one.

So if anyone knows of such an API, please tell me.

Thank you very much in advance.

infamous41md · 06-12-2004, 12:26 PM

i think iptables can do that, don't know how tho, check out the docs. if u want to do it programmatically, once again, check out my site, all the way at the bottom this time.