cookiesniffer is a simple and powerful cookie sniffer that recognizes (through heuristics) and reconstructs (through libnids) new and existing HTTP connections, parsing any valid or partially valid HTTP message. The output is a set of files containing the gathered information with time-stamps in a format that can be trivially searched and parsed with standard UNIX tools such as grep, awk, cut and sed. It supports wireless (AP_DLT_IEEE802_11) networks.