INTERNET FILTERING

Definition ofInternet Filtering:

Internet filtering refers to blocking undesirable content on the Internet.

It helps you filter and deny access to any unwanted material.

The person who sets up the filter provides a system to block certain data. It may include advertising, a virus, file transfer, or other offensive material.

When a user makes a request for a Web page that has been blocked, the Internet filter keeps the request from being completed. It either blocks it completely or redirects it to another location.

Uses of Internet Filtering:

These days, Internet filtering is being used in various fields. Offices may block online file sharing, college labs may deny access to certain sites, and parents and guardians may limit the online activities of their kids.

All this can be done through Internet filtering using filtering software. With it, you can easily put a check on any Internet activity on your computer.The benefits that filter buyers are most often looking for include:

  • Controlling what comes into the home.
  • Keeping their children from accidentally (or intentionally) running across objectionable websites.
  • Peace of mind, knowing that their families are able to safely enjoy all the good that the Internet has to be offer.

As many people spend time using the internet for non-productive use, as such employers look for ways to increase

Productivity so they go to a filter vendor which is all to ready to sell them censorship software.For the same purpose, people are filing demand to circumvent their software.

Internet Filtering through DNS Poisoning:

The simplest way in which Internet filtering is done is by changing the DNS of the Internet Service Provider so that whenever a user types in the URL of a blocked website, the right IP address will not be collected by the web browser and the user will be directed to some other location. This method of Internet filtering is known as DNS poisoning. However, this method can easily fail if someone knows how to correct the DNS settings and change them back to normal.

Problems with Internet Filtering:

  • Gaining access to blocked sites is possible through modification of the settings of Domain Name System. Therefore, anyone with even a little knowledge of Domain Name System can easily outwit the whole DNS poisoning system. The biggest problem is that there is no way to block a particular Web page using DNS poisoning because the entire domain is filtered out at once.

Filtering by Access Point:

Computers typically access the Internet through routers or servers, which are referred to as “access points.” With SiteSURV, you have the ability to connect to all computers that share a common access point, meaning you can manage the corporate web filtering for several computers from one remote location. In fact, you’ll be able to manage all PCs on up to four access points.Filtering software can also be used to block Internet access entirely