okay now im a noob and new at this packet stuff and programming okay , now after i sniff a packet from a packet sniffer and get it and know the packet type and packet length what i do that's the question with the other offsets after offset 4 !! i really don't understand what i do with them after i know the type and the length if any one would put a full guide about packets in general like from step 1 of sniffing 2 last step of writing it i would be highly appreciated :) thanks for helping to everyone