关于防火墙的基本原理:您真的了解防火墙吗?

2014/11/21

Firewall basic principle is to filter your computer / network and the Internet. You can set that you want to avoid and what you can accept. Everything else is not allowed any. There are several different firewall filtering method, and some are used in combination. These methods will work at different levels of the network to determine how a specific filtering options.

Firewall can be used in many ways to add the security of your home or business. Large companies often have very complex firewalls to protect their extensive networks. For external connection, the firewall can be configured to prevent employees from sending certain types of e-mail or network to transmit sensitive information outside the company. Internally, the firewall can be programmed to prevent access to certain sites (such as social networking sites). In addition, the firewall can also be used to prevent external computer accessing internal computer network. The company may choose a specific single computer network to share files and restrict other computers to share. Use a firewall configuration without any restrictions. For a wide range of configurations, typically it requires trained IT experts to handle and maintain.

If only for home use, a firewall is a simple job. The main purpose of a personal firewall is to protect your personal computer and a dedicated network to protect against malware intrusion. Malicious software is a major threat to your home computer. Virus often appear first in your mind malware. The virus can be transmitted via e-mail or the web to your computer, and can quickly destroy a large number of your document. Including Trojans and other malicious software and spyware. These programs are usually designed to get your personal information for identity theft. There are two ways a firewall can prevent this from happening. It can allow all traffic except those intended by standard data, or it may block all traffic, except through a predetermined standard.

Comodo firewall using the latter method to prevent malicious software installed on your computer. This comes from the world’s leading security solutions and certification authority of the free firewall to use a patent-pending “clean PC mode” to prohibit any application installed on your computer, unless the program to meet any of the following criteria:

a) Allow users to install

b) The application appears in the approved application list provide Comodo

With this feature, you do not have to worry about without your authorization to install any application in knowledge.

Comodo Firewall was named the top firewall, recommended for beginners and advanced users. It has many unique features, including the “Defense +” and advanced host intrusion prevention system (HIPS), can prevent change important system resources. This software is highly customizable, you can adjust to your specific needs.

Comodo Internet Security combines the award-winning Comodo Firewall and powerful anti-virus software to protect the few around the world millions of computers, and it’s free.

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