It is important to remember that the Internet, like other networks, provides two-way communication. When you are connected to the Internet, other computers can see your computer. By default, Windows NT Workstation security protects your computer from casual intrusion. However, while it is very unlikely that your computer will be attacked while you are browsing the Internet, it is still a good idea to configure your computer securely. Before you install and configure TCP/IP and Dial-Up Networking, you should review the security configuration of your computer.
If your computer is also connected to an in-house network (an intranet), it is especially important to prevent access to your intranet from the Internet. This section provides tips to help you secure your computer before connecting to the Internet.