McAfee AVDCDE-AA-AA User Guide - Page 142

Using the VShield Scanner 3. Tell the module which sites to filter. The program uses a list of dangerous Internet sites to decide which ones to prevent your browser from visiting. You can enable this function and add to the list of "banned" sites in two ways: • IP Addresses to block. Select this checkbox to tell the module to identify dangerous Internet sites by using their Internet Protocol (IP) addresses. To see or designate which addresses you want the module to ban, click Configure to open the Banned IP Addresses dialog box (Figure 4-32). Figure 4-32. Banned IP addresses dialog box The Banned IP Addresses dialog box identifies which Internet Protocol (IP) addresses you want the Internet Filter module to block whenever you or someone else tries to connect to them. By default, the list includes two sites that download hostile Java or ActiveX objects to your machine as soon as you connect. You can add other sites, then password-protect your settings to ensure that users do not delete them. Each address consists of four numeric groups of one to three digits each, formatted in this manner: 123.123.123.123 The Internet Filter module can use this number to identify a specific computer or network of computers on the Internet and prevent your browser from connecting to it. Each group of numbers can range between zero and 255. The first number series is the banned site's domain address-the number you use to find it on the Internet- and the second is a "subnet mask." A subnet mask is a way to "remap" a range of computer addresses within an internal network. The module lists a default subnet mask of 255.255.255.255. In most circumstances, you will not need to change this number, but if you know that a particular network node at the site you visit is the source of danger, you might need to enter a subnet mask to preserve your access to other machines at this site. 142 McAfee VirusScan Anti-Virus Software