hi,
I am trying to develop a content filter.For sniffing the packets i'm using the "libipq" library.Here while blocking filetypes(suppose image file) i'm using "NF_DROP"...which is causing a problem that once the packet is dropped,the status is in dropped state for a long time ,since requests will sent by browser to the host if the required packet is not reached to the browser.....so i thought of rejecting packets instead of dropping.But i couldn't understand how to reject the packets.Please help me.

Thanx in advance............

Hi,

You can use "NF_REJECT" instead of "NF_DROP" to reject packets instead of dropping them. If you are using iptables command, you can specify '-j REJECT' as the action of the command.