When IIS is installed, both the Web and FTP components run as services. In much the same way that any service of a Windows XP Professional system can be started, stopped, or paused, the same is true of these services. Under normal circumstances, you don’t even need to use the Services MMC snap-in to configure these settings. Instead, you can either right-click on the Default Web Site or Default FTP Site to start, stop, or pause either, or use the control buttons in the Internet Information Services menu if you prefer.
Stopping a site will disconnect all users and stop the service, while pausing a service will stop any new connections to the server, but allow existing connections to continue on their way. If you’re not using a particular service (like FTP) but have it installed, then consider disabling it from the Services MMC – this will ensure that users cannot connect, and will help to reduce resource usage on your system.
