Wellenreiter is a wireless network sniffer. However, unlike other similar products it also includes a new and unique ESSID-bruteforcing feature. The bruteforce functionality needs at least 2 Cisco cards. One card will constantly sniff and the other will try to bruteforce the ESSID. Further, the bruteforcing card changes its MAC Address every single request it does, therefore no flood-protection will work against it.