The project “Secure LAN communicator a .Net Project” is an easy-to-use system for LAN messaging application. A server is not required and is easy to install. This LAN communicator identifies and works under Windows NT/2000/XP/Vista. This system comes with a host of useful features like message notification alarms, personal or group messaging and an intuitive interface. Strong encryption is provided in this system and no unauthorized person can access the correspondence.-　The project “Secure LAN communicator a .Net Project” is an easy-to-use system for LAN messaging application. A server is not required and is easy to install. This LAN communicator identifies and works under Windows NT/2000/XP/Vista. This system comes with a host of useful features like message notification alarms, personal or group messaging and an intuitive interface. Strong encryption is provided in this system and no unauthorized person can access the correspondence.