Protecting your PC from attacks is really important and this process is tricky as well. If your computer stays connected to the internet, then there is more probability for hackers to attack on your system. To minimize or even to eliminate this problem, you can install a suitable firewall utility to protect your system from hacker attacks.
Using the firewall software, you can control which program will have access to internet and block others from accessing internet. Here-in are the best Firewall utilities that are available for download for free and install them to protect your system.