Windows 7 firewall Apart from the various anti-virus and anti-spyware programs , there is quite reliable tool that allows you to protect your computer from unauthorized access . The tool is called a firewall. Firewall ( it can also be called a firewall , firewall , security gateway , etc.) — a kind of buffer , located between the local computer and the Internet . Its meaning is to block all attempts to penetrate both from the Internet to your computer or from your computer to the Internet various programs , commands , jobs , etc. The question may arise : it is clear when the firewall blocks unauthorized access from the Internet to your computer , but why block access from your computer to the Internet? Then, in order , for example, a Trojan or other spy who infiltrated into the computer before you install or enable the firewall , had not been able to fulfill the resulting job ( send spam from an infected computer to send information about the computer and the user , etc.). It is permitted Internet access only to those applications that will indicate the user (Internet Explorer, Outlook Express , etc.). It should be noted, however , that not all firewalls can monitor outgoing traffic. In Windows 7 operating system has built-in firewall to connect to the Internet. By default it is enabled, and unnecessarily disconnect it is strongly discouraged. Enabling , disabling, and configuring firewall To open the Windows 7 firewall should be in the Control Panel, select Network and Internet , in this category, click on the link to the Network and Sharing Center , and in the window that opens — click on the link Firewall Windows, which is in the lower left corner . As a result, the screen will display the window shown in Fig. 8.1. Fig . 8.1. Windows 7 firewall This window provides information about the current state of the firewall Windows. The figure shows that the firewall is turned on , all connections to programs not listed on the approved list , will be blocked , and each such blocking the screen will display the corresponding information message.