I m trying to create a network packet inspector.
I know you can do this with libpcap, but it s not a sniffer, i need to forge network packet, before it was sent on network. (sending via socks server)
I found 2 ways to do this :
Which method do you think is the best ?
Neither, use a tun/tap device: http://tuntaposx.sourceforge.net/
You ll need to route the traffic to that device, modify it, then send it back. You can do this with firewall rules. There are lots of examples of using tun/tap all over the open-source world, it isn t hard.
Advantage: it s a kernel extension, but a standard kernel extension, and therefore you don t need to worry about debugging it.
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