Install a program on your computer NetPolice. It exists in both free and paid versions. There is a version for the Linux operating system. Select in the program settings, resources what kind of subjects your child cannot view.
To not install on the machine any software, use the online service of the same service NetPolice: set as primary DNS server the IP address 22.214.171.124, as a secondary - address 126.96.36.199. To implement this in any OS. Will be filtered requests to the sites of the category "Pornography".
The disadvantage of programs that are installed directly on the computer, and reconfigure DNS, is the ability to bypass these measures, for example, when booting from the Live CD (the children are inventive, and reset the BIOS password for them nothing). Much better to make filtering the content of the pages was carried out by the provider. In this case, it would not have to reconfigure your baby equipment, to obtain access to dangerous websites, he can not. For information about the availability of this service, please contact support at your ISP or cellular operator. In the second case, you can limit the access of the child to dangerous sites and mobile phone.
Some providers this service is implemented in some other way. Filtration is carried out not by the content of the pages, and on time. The child will be able to access the Internet only during certain hours, and all you have to do is watch those around him and monitor what resources it sees.
Note, however, that even safe the Internet can be used as "babysitters" for the child, as was the TV. Communicate more with him, and when he uses the Internet, could tell him the interesting sites the subjects that interests him. Themselves engage him in particular, and using the Internet, say, sports, arts, technical creativity.
Advice 2 : How to restrict children access to websites
The Internet is a good tool for learning as it contains a huge Arsenal of useful information and also provides the opportunity to communicate with friends. But apart from useful information on the Internet there are sites that children visit undesirable. Besides, a long "walk" on sites distracts the child from a school homework. Caring parents must control the time of child on the Internet, and restrict him from unnecessary information.
The most effective assistants in these cases are special limiting programs developed by experts in the field of programming and computer science and is designed to control access to the network. Install on your computer KidsControl, Kaspersky Internet Security and/or Norton Internet Security. With these programs you can restrict access to unfavorable information resources according to different categories, such as adult sites, online casinos and games.
Indicate with a tick the category of resources to which access plan to limit. New versions of the above programs also provide the ability to set the control children's access to Internet by days or by hours.
According to the developers of these programs, the functionality of the web filter is based on so-called database with several million sites. To the categories filter can be attributed to music sites and videos.
Limit your children's access to unwanted websites by connecting children's tariff plan, which is offered by Internet service providers. It exists in two variants: for an audience aged six to ten years and from ten to fourteen. For each age group are given access only to those resources that have passed the expert assessment of the National node of Internet security and are protected from malicious content.
Give the kid more time. Spent many hours at the computer, the younger child seeks answers to questions many of the questions that often parents just don't have the time. Organize family trips to the cinema, trips on the nature, play with him Board games. It is the lack of communication creates the need to spend time on the Internet, communicating in social networks. Limit your child to look for answers on different websites, replace it with a virtual circle in a full relationship of parents and children.