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A personal computer without firewall means an apartment without any lock. We all know the importance of lock for an apartment.  The same is applied for your computer as well. When a computer is connected to the Internet without a firewall the hackers can easily access to it and steal your important information. Only a firewall can block spyware, malware, viruses and other malicious objects that try to break in at a weak point. So, in the realm of growing cyber crime, firewall has become imperative for all the computer users.

Your computer is 100% secure when it is not connected to the Internet. But you need to connect your computer to the internet to execute various tasks. And the challenge is to make the computer 99.9% secure when it is connected. Here comes the importance of a computer repair company that offers technical support to the PC users to protect their computer from hackers. You can also try some simple things in this regard. There must be a personal firewall and anti-malware software installed on your computer and it should be kept up-to-date. It will help you to find and remove Trojans, viruses, spyware, and other malware. Whether you are using wired or wireless router, its firewall software must be configured.  

If it is the question of home PC firewall, there are several options. Microsoft Windows Firewall is a renowned name in this context. There is firewall inbuilt on the Windows 7, Vista and XP Service Pack 2/3 operating systems. Firewall is by default turned on for blocking threats from the Internet. You should check whether it is turned on or not. If it is not on, turn it on. If you install a third-party software and/or hardware, then you can turn it off.

There is also two-way third-party firewall Software which blocks both incoming and outgoing threats. If your computer is infected with a virus, Trojan horse or spyware, mails or data that you send will comprise threats. This firewall will stop these virus infected files. There are many internet security software suites which comprise two or more security features like personal firewall, anti-virus, anti-spyware and more. Some of the most renowned names include Norton Internet Security 2011, Kaspersky Internet Security, Webroot Internet Security Complete, Checkpoint ZoneAlarm Internet Security Suite, etc.

Usage of hardware firewalls is also very common in recent days. For better computer security, users use this hardware firewall. There is “network address translation” (NAT) that hides your PC from the Internet. Hardware firewall may also include NAT plus “stateful packet inspection” (SPI) for better protection. For home users, three basic types of hardware devices are available in the market. These include Wireless Routers, Wired Routers, and Broadband Gateways. You can use any of them for better protection of your computer and online identity.

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What is a Firewall?
Firewall is a software or hardware which helps users in detecting and keeping all the malwares away from PC. Firewall is the most effective software that helps you in protecting your PC. It is also important to turn on your firewall prior to connecting to the Internet.

Need of Firewall –
Today computer environment has become pretty unreceptive. Hence, it has become very important to get a complete protection for your computer security otherwise hackers can get access to your PC as well as your valuable data. Apart from hackers, your computer can also get affected by Virus and other malwares. Firewall is used as a preventive measure to stay away from all such malicious items.

How does Windows Firewall work?
Windows Firewall monitors every-network traffic which is enabled. Firewall keeps track of every communication that is originated from your PC and also it prevents your PC from all the unsolicited items.

If needed, firewall dynamically opens ports and allows your computer to receive traffic that you have specifically requested, such as a Web page for which you have clicked the address.

Windows Firewall also helps user in blocking of unidentified traffic that can reach to your PC. For special uses, such as networking, hosting online games, or hosting your own Web server, you can select ports which you want to leave open. This allows others to make connections to your computer, but it can also reduce security.

It is always suggested that a firewall product must be well aware of windows firewall basics and use procedure.

Nonetheless, configuration of firewall creates issues in browsing of many websites, such as, gaming sites, web or other server. If you are also facing such issues, these problems can be well-treated with help of expert computer technicians.

(Note – Apart from handling the issues of Windows Firewall, technical support experts also help you configuration of complete PC protection system.)

Benefits

Windows firewall is considered of high importance for big corporate houses. They serve as a core of secure networking environment and keep hackers staying away from your computer and crucial information.
It offers a secure web browsing environment and reduces of your worries any data theft. It also diminishes the percentage on internal threats.
If you want an extensive reach on internet. You can customize your firewall settings. This would help you in blocking only unwanted IP address but rest would be functioning nice.
You can decide upon the protocols to be included in your firewall’s filters. You can customize it for some of the commonly used protocols, which are: IP, HTTP, TCP, FTP, SMTP etc.
Your firewall can be to customized to allow or block any port number

How to configure Windows Firewall on Your PC

Click the Windows icon & select Control Panel
Click on System and Security.
Click on Windows Firewall
If a green check mark is visible, you are running Windows Firewall.

Types of Firewall
There are various types of Firewall which can be configured on your PC. These are respectably -

Packet filtering firewall – this firewall is used to examine the information available in the header of message packet.
Application-level gateways – This firewall work on the application layer of the protocol and it works in a pretty intelligent manner than the packet filtering firewall.
Circuit-level gateways
Hybrid firewall

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