Để liệt kê các cổng COM có trong máy tính của bạn thì bạn chỉ cần sử dụng phương thức GetPortNames() của lớp SerialPort. Cách làm như sau:

This article describes how you can enable the classic logon screen used by Windows XP Server that resembles the following example:

Data confidentiality is one of the main concerns in windows environment. Your data should be protected even your computer is accessed by unauthorized user.

What is Telnet ? Telnet is an abbreviation of Telecommunication Network, which is an old network protocol. This protocol is used for remote host connection. It provides a two way interactive command / console line interface.