Hacking is a method of stealing information. Password sniffing is a common hacking technique in which steal the password and used for their own purposes. Through this project sniffing password from LAN is by a tool wlans. This can access the LAN. It includes fast port scanner for gathering information about open ports on remote computer also it shares user accounts. Using python scripts identify the active users on LAN and see usernames, passwords. Steal the victim’s cookies. Inject arbitrary HTML into pages they visit. Hook their browser with BEeF (Browser Exploitation Tool) and send them a fake flash update to download whatever payload you want. Take total control or silently watch victim’s every movement. This is a multithreaded, asynchronous packet parsing or injecting ARP poisoner. Through this tool we can access the hooked systems: URLs visited, usernames, passwords, messages, and searches made, perform a fast and simple port scan prior to catching their packets.