Two of them, McAfee's Desktop Security Suite and eSafe Protect , also offer protection from viruses. Despite these similarities, each of the three employs a different security strategy. Personal Firewall Firewalls are typically thought of as a network security measure.
Similar technology exists for the desktop.
Desktop Security Suite , a bundle of utilities, includes a module called PCFirewall that employs this model. The Sandbox The sandbox security model has been popularized by Java, a programming language and environment that uses the sandbox to minimize the chances that a downloaded applet will damage your system. The sandbox is a safe area where programs such as downloaded ActiveX controls and Java applets are permitted to run without having access to the rest of your system. Scanning When you want to verify that there are no viruses on your system, you launch an antivirus program to scan all your drives. It compares your files with a library of known viruses to ferret out any suspicious code.