On Wed, 21 May 2003 12:49:54 +0100, "Regina Reine" <regina@xxxxxxxxxxxxxx> wrote in message <000001c31f8f$1866f1d0$88cc858b@xxxxxxxxxxx>: > > Hi, > I am doing an experiment with iptables. I use a hub to connect two ..hub? And being visible wont hurt your experiment? > computers. Computer A captures the video packet (or any packets) and > computer B runs iptables and my code in Red Hat 8. Basically, with > hub, computer B will be able to see the packets coming to computer A. > I would like computer B to preroute this packet and put these packets > in userspace where I run my code. > > I uses : > > ** Iptables -t mangle -I PREROUTING -p udp -I eth0 -j QUEUE > > However, seems like I only be able to capture broadcast packets. (But > TCPDUMP could see the udp packets). I have checked my code (just a > simple code that scan what kind of packets and it worked with udp > generator such as iperf or hping). > I have tried a few other similar ways but still only could capture > broadcast packets. Does anybody spots my mistake or could give me > advice for better solution? Thank you > > Best regards, > Regina Reine > ..you want tcpdump running in promiscous mode, 'info tcpdump' for the gory details, it is also possible to pipe it. ..you could also set up an ip-less sniff bridge, it works nicely for bandwidth throttling too. ;-) -- ..med vennlig hilsen = with Kind Regards from Arnt... ;-) ...with a number of polar bear hunters in his ancestry... Scenarios always come in sets of three: best case, worst case, and just in case.
