Sniffing Methodology
=Use tools such as Yersinia and macof
=Use tools such as yersinia
=Run rogue DHCP server
=Use tools such as Ufasoft sniff, BetterCAP, Etterca
=Use tools such as technitium MAC add changer.
=Send spoofed IRDP router advertisement messages
=Use techniques such as arpspoof/dnsspoof
=Send trojan to the victims machine
=Run Rogue DNS