(In fact, I have been using sniffer in wired environment for a long time, but I am not used to it when I switch to wireless environment. I have been looking for sniffer tools in wireless environment. At first, I used ethereal. Although it has various advantages, I can not help but deny its serious shortcomings: there is no good GUI system, report system, expert system, and matrix function similar to sniffer, Until I found OmniPeek.)