Hi, Try reading the manpage of libipq (http://www.cs.princeton.edu/~nakao/libipq.htm, for example) there is an example how you can access the packet data. If you want to modify data, read the ipq_set_verdict manpage (http://www.die.net/doc/linux/man/man3/ipq_set_verdict.3.html) David 2006/2/7, tim tim <tictactoe.tim@xxxxxxxxx>: > hai all... > i captured packet using netfilter hook and queued to > user space.. can some body tell me how to access the packet data using > libipq ..bye > > it's me. .. the unknown gye.. > >