Firewall: An important component of PC security

Securing your PC from viruses and malware has become one of the most challenging tasks these days. Millions of malicious programs are suspended in the web galaxy to gain control over your computer and cause substantial harm to data and software. In such circumstances, you must have an active firewall installed on your PC to block unsolicited and malicious mails, attachments and programs before they could harm your computer. Firewall plays an important role in securing your PC as it can mitigate the threats to larger extent and keep the system safe.

Firewall can be better understood as a security wall that acts as a filter between your computer/network and the Internet. It is the point where you can filter out the unsolicited mail messages and other programs while they are trying to enter your system. Firewalls provide you the freedom to choose programs or mails that you want to allow to your PC and also those which you want to block. Various methods are used by firewall to filter out the information. Firewall uses these methods on the different network layers and thus ensures that specific firewalls are used for various networks.

You can use firewalls in various ways to beef up the security of your home or business computer. For example, big organizations or companies often deploy very complex firewalls to secure their extensive networks. Firewalls are used both at inbound and outbound sites to ensure complete security. At the first point, it can be configured to prevent employees from sending certain e-mails or sending sensitive data out of the network. However, on the inbound site, you can program the firewall to block access to certain websites such as social networking and porn websites.

Another major function of the firewall is to prevent the access of outbound computers to computers inside the network. We can configure the firewalls in various ways depending upon our requirement. For example, you can configure one computer for file sharing and rest others to restrict all the outbound messages and information. You must acknowledge the fact that complex and extensive configuration should always be performed under the close monitoring of trained IT experts.

Configuring firewalls for home computers is comparatively easy. Personal firewall is meant to protect your home computer and private network from malicious agents. The primary threat for your home PC could be malware. Viruses are threats that can creep into your system if it is not safeguarded with adequate firewall arrangements. You may contract virus infections via e-mail messages especially those with attachments. Other malware that can quickly damage your computer are Trojan horse programs and spyware. There are two way in which firewall can prevent threats caused by these viruses and malware. It can either allow all traffic to pass through except those that do not match the pre-determined security criteria, or block the entire traffic unless the security criteria are met in entirety.

The above discussion leaves least to explain about the importance of firewall in ensuring the security of networks and computers both in business and home atmosphere. It undoubtedly plays an integral role in the deployment of overall PC security arrangements.