Firewalls are structured to be the best companions that a computer can have in terms of protection. There are two major types of firewalls which are host based firewalls, mainly considered as personal firewalls, and network based firewalls. Both work on the same principle of protecting the computer from malicious attacks by unauthorized parties who may wish to get access to privileged information. A firewall is the only option that a person may be able to utilize in the spirit of making sure that their information and computer is maintained confidential and that no foreign interference is allowed to tamper with the same.

Firewalls are oriented to provide a shield that unauthorized people and malware cannot penetrate and they do this through establishing a security mechanism which works on the same principle as passwords. Corporations and firms employ the network based firewall which in turn creates the protection ring around the network that is used by the firm or company. In this wavelength, a person who is outside the radius of this network is automatically restricted from accessing information that is shared within the network and this ensures that files and other documents are kept safe from prying and competitors' eyes.

The best way of ensuring that firewalls work efficiently is to ensure that they are up and running every time the computer is joining a network whether it is a wireless Internet network at a local restaurant or the company network. Hackers and other malicious software including viruses are always at hand to infect the computer and a small portion of these can really cause incomprehensible damage which may not be immediately remediable. In this respect providing zero vulnerability through the deployment of firewalls is the only principle that can work effectively and efficiently to record the preferred results. Combining both network firewalls and the personal or host based firewalls is the best practice that will satisfy the security requirements of your computer and your corporation.