What is content filter? Content filter is a device or software that is use to block or allow internet sites and content from being accessed and viewed by an individual, a group of individuals, or all the connected users. Businesses can block content based on traffic type. For example, Web access might be allowed, but file transfers may not be allowed. Content can also be filtered by site through the use of lists of URLs that are cataloged by content which are updated frequently. Parents can control and restrict their children’s access to inappropriate content via special browsers and content filtering programs.
Content filter are fast getting implemented in corporate, government, and school sectors. Most organizations today have their own internal e-mail infrastructure. Many of them also implement other communications systems such as Instant Messaging (IM) and peer-to-peer (P2P) collaboration software such as Microsoft Groove. These technologies have had a tremendous impact in recent years, greatly simplifying collaboration and globalization efforts. But they come with a price, which is not limited to the price of lost productivity. E-mail, IM and P2P communications are all popular replication systems for malicious software or malware. They can also enable other security threats such as phishing and social engineering. Because of this, many organizations have disallowed P2P and IM systems. However this is not always possible and can sometimes cause more harm in lost productivity. This is why organizations should have a content filter in place.
Implementing content filters will limit the possiblity of an network attack. Content filters examine network traffic as it flows to determine whether it contains an attack. Today there are a number of content filters designed specifically for different types of communication including e-mail, IM and P2P collaboration systems. These content filters are able to prevent malicious use of systems while still enabling the rich work environment that helps boost the productivity of today’s tech-savvy user.
They are many types of content filter providers available. It’s to your advantage to shop around. Content filters are not by any means cheap. Some are very expensive in the range from $30,000 to $60,000 per year. Most content filter providers provide their own content server or network device. Some only provide content software that you could install on your server. Again, you need to evaluate what you have and the cost and risk to have your traffic filter or not.