With the Internet become a common hang out place for nasty viruses, spyware and other perilous matter, you can’t take your computer’s security for granted. Such a situation pushes a need for PC security products like computer firewall. The basic function of firewall protection is to prevent unauthorized access to a network. A network can include your local area network, wide area network, and the Internet or it can simply be an Internet Service Provider (ISP) trying to prevent unacceptable access to the files.
