Hi, iptables provides facilites to queue packets that traverse the kernel to a user space application. You can specify rules that define which packets are sent to user space. Furthermore, you can modify packet data to be reinjected into the kernel. I would suggest reading the manpage of libipq, providing a simple API to receive the packets. A very simple example application can be found there as well. As to reinjection, read the ipq_set_verdict man page. Hope that helps a little bit. David 2006/2/10, Rob Sterenborg <rob@xxxxxxxxxxxxxxx>: > On Fri, February 10, 2006 05:35, aparna misri wrote: > > hello, > > I am doing a small project in networking.I read > > somewhere that I can use iptables to capture network > > data.I want to capture IP packets so that I can > > compress it and then send it to the receiver.Receiver > > decompresses it at its side.Is it possible to do it > > with iptables? > > I'd capture it with tcpdump, ethereal or something like that. These are packet > sniffers, iptables is not. I'm not sure if iptables can capture (and log) all > packets just like a sniffer can. > > > Gr, > Rob > > > >
