Computer Security - Importance Of Firewall For Safe Computing

There is no doubt about the fact that advancement of technology has initiated a silent revolution in human civilization. From communication to entertainment, in all sphere of life computer and Internet is playing a very imperative role. But like all other scientific inventions, computer and Internet are also misused by many people.

Cyber criminals, called as hackers, use different tools to break into the computers of the users and try to get access to important information like your passwords, bank account information, and social security numbers, etc. How to block them and enjoy secure computing? Well, here comes the importance of computer security. And your computer is never secure without a firewall.

There are many online technical support providers that help the computer users to protect their computers against any type of attacks. You can opt for their PC security support to enjoy secure computing. Computer services offered by these companies are quite reasonable and one can avail it very easily.

What is a firewall? A firewall could be hardware or software that limits access to a PC from an outside source. Not only that, firewall also limits the access to the outside source. It plays a very important role to protect the PC from unauthorized users by carefully monitoring and checking outgoing and incoming messages to and from the Internet.

Let’s take a closer look. There are packet filter, application gateway, and circuit level gateway and proxy server, etc. in firewall techniques. All of them keep an eye to protect the users. For instance, the packet filter monitors closely at each packet and ascertains whether it is safe or unsafe, and then accordingly it accepts or rejects each packet.

There is application gateway that screens FTP and Telnet servers, while circuit-level gateway looks for TCP and UDP connections. If they find that the servers and connections are not safe, they are blocked. On the other hand, the proxy server hides the network address, which is very important to protect your PC against the criminals who look for options to hack your computer.

So, it is quite clear that a firewall is very important to enjoy safe and secure computing. Windows OS users, be it Windows XP SP2 or Windows 7, includes a built-in firewall. Windows 7 Firewall is quite strong. Whether you are using XP or 7, make sure that the firewall is turned on. In order to check that you can click on Start, then My Network Places, View Network Connections and then click on Change Windows Firewall Settings, and you can turn the firewall ON or OFF.

If you are not satisfied with the performance of Windows Firewall, you may also install a third party firewall. There are plenty of options like ZoneAlarm, Black Ice, Norton Internet Security, etc. you may also consider installing a hardware firewall. If you have hardware and software firewall turn both of them on for the best protection.

For virus or malware removal, the best solution is to consult a remote computer repair company. There are many of them that offer comprehensive support to the users.