It's often too easy for you busy laptop warriors to assume your Windows PCs are safe. A computer virus? That's not going to happen to me ... until it does. However, Windows 7 has built-in security settings and updates. We look at the five best security features within the OS that help keep the bad guys at bay.
Windows Firewall is an easy feature to turn on or off and can help prevent hackers and worms from slithering into your computer through a network or the internet. A firewall can also help stop your computer from sending malicious software to other computers.
Unless you have another firewall enabled, such as a corporate network firewall, you should turn on Windows Firewall to protect your computer and network (if you have one).
To turn on Windows Firewall, click the Start button, and then click Control Panel. In the search box, type firewall, and then click Windows Firewall. In the left pane, click 'Turn Windows Firewall on or off.' If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Click Turn on Windows Firewall under each network location that you want to help protect, and then click OK.
Note: If your computer is connected to a corporate network, your company's group policy settings might prevent you from turning on Windows Firewall.