Hi Megharaj, On Sat, 2004-07-17 at 02:39, Megharaj wrote: > hi all... > > i want check the network throughput without passing the packet to > userspace. > > (tcp) how can i drop the packet in the kernel sapce? I think u can go for netfilter techniques.. For that you can take either of these two options 1) Use the tool "iptables" from the shell (see man iptables) 2) Define a netfilter hook through a "linux kernel module" (ofcourse u can add code into the kernel source). ( Refer {SRC}/net/ipv4/netfilter/*.c and "netfiler hacking howto" from Rusty Russel ) Hope u are doing good ( he is my ex-colleague) Shine Mohamed Jabbar -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/