Free internet filter

Filtering online content has become a real necessity, since the variety of information on the Internet is on a dangerous scale even for an adult. The use of special traffic analysis and filtering programs helps prevent unwanted information from appearing on the user’s screen and limits access to dangerous resources.

Possibilities

The Internet Control Server program has a wide range of capabilities for filtering Internet content, becoming a barrier to dangerous traffic already at the border of the local network. To evaluate the full set of tools, you can download a free test version, which is limited only by time of use, but not by functionality.

With the advent of Federal Law No. 436-FZ, content filtering systems in schools have become not only a mandatory element, but are also subject to reliability checks. The ICS program meets all the requirements established by law for such software products. The solution uses complex technologies, but the program is simple and understandable to the user without special knowledge. Together with technical support, you get a reliable and modern content filtering system for school, office or home.

Basic functions of the ICS

As a content filter:

• Filtering traffic from any source.
• Search queries pass through SkyDNS - this is a Russian Internet service specially created for filtering tasks and works very efficiently.
• The database of prohibited resources is constantly updated.
• Scanning incoming traffic for unwanted content.

In general, “Internet Control Server” is essentially a VPN server, and solves all the problems characteristic of organizing a full-fledged and secure local network:

• certified as a firewall that blocks external threats;
• has a built-in antivirus;
• allows you to manage the network indefinitely - to differentiate the rights and capabilities of users, take into account traffic, keep statistics of visited resources, limit actions on the network by time, connect remote users and entire networks, etc.

Ultimately, the management of the educational institution covers all the needs for organizing the local network of the educational institution - from content filtering to absolute control over events occurring on the network.

There is a lot of good and useful information. Now people have begun to look more often on the Internet to find out current news, weather forecasts, watch videos (instructions on how to do something), cooking recipes, or simply find out how to screw a light bulb into a chandelier. There is a lot of information on the Internet, just have time to enter all kinds of queries into the Yandex or Google search bar. But among the useful information, there is harmful and obscene information in the form of images, obscene text and videos.

It is very important to protect children from such content, as Lately A lot of information has appeared that disrupts the child’s psyche beyond recognition. The first step, of course, is for parents to monitor their child at home, and for teachers at school to monitor what sites they visit on the Internet, conduct conversations, and so on.

But it’s not always possible to keep track of your child, which is why there are content filtering systems (SCF). Currently on the market information technologies SCF offers a lot, for example, one of the popular services SkyDNS– a paid and partially free content filtering system for schools, offices and home.

You can also use the absolutely free Internet access system -.

What is the Rejector DNS server and its functionality

– centralized system content filtering and Internet access control, with which you can create protection for children from obscene information, images, videos and prohibited sites (+18) and plus protection from viruses (since such sites often contain malware). Simply put, Rejector is a DNS server with the ability to manage it remotely and centrally.

The Rejector service has the following functions:

• Support for static and dynamic IP addresses (IP address from which requests are processed);
• Filtration categories (office filter, children's filter, individual filter);
• Exceptions (black and white list);
• Bookmarks (you can save a long site URL under a short name);
• Statistics;
• Feedback from the administrator to network users;
• Time interval (you can specify which days and times filtering will apply).

How the Rejector service works: registration, configuration and launch of content filtering

To take advantage of all the functions of the Rejector service - blocking unwanted sites and content, you need to register, providing all the necessary data.

After registration, the content filtering system control panel will become available to you. And you can start managing the web service. Everything happens centrally, that is, from your computer.

Networks section

First of all, let's go to the section "Networks" and make the settings:

1. Enter the name of your network (any name, you can use Cyrillic or Latin).
2. Select the status: static IP address or dynamic IP address. It all depends on the settings of your provider. You need to check with your provider what your address is.

Explanation:

A static IP address is a permanent address for your computer without any time limit when connecting to the Internet. Issued by the provider and is mainly specified by the user in the settings of the computer or router.

A dynamic IP address is a non-permanent (changeable) computer address that is assigned automatically when the device connects to the network and is used for a certain period of time.

With a static IP address everything is simple, it is displayed in the upper right corner. You need to copy and paste it into the IP address field or look at it.

With dynamic addresses, everything is much more complicated, because they can change every day, and some providers have it set in their settings every 3-4 hours.

To configure a dynamic IP address, it is recommended to use a web service dyn.com/DNS/, although as I noticed, it has become paid. You can also search free dyndns online. Operating room users Windows systems can use Rejector Agent .

In the following articles, I will try to write how to set up automatic detection and updating of dynamic addresses.

Chapter "Filtration" You can select a white and black list that suits you according to which content will be filtered. There are ready-made ones: office filter, children's filter, bladeless filter and others.

By selecting You can configure content filtering according to individual settings, that is, select categories of sites that will be blocked.

In chapter "Exceptions" You can finalize the list of sites that need to be blocked or, conversely, that must be accessible on the Internet. To put it simply, finalizing the white and black lists.

Section "Bookmarks"

Section "Statistics"

The “Statistics” section is designed to track the number of requests for website URLs, blocked web resources, erroneous requests for a certain period of time (the user can set the time period he needs).

Section "Requests"

In the “Requests” section, the administrator receives messages from network users requesting the opening (unblocking of the site). Users can submit requests from the blocking page. By the way, the blocking page can be configured in the “Networks” section by clicking on the link Tune on your ban page.

Section "Time Interval"

The “Time interval” section is devoted to settings regarding the operating time of content filtering on the network. For example, you can configure the Rejector service not to block sites after 17:30, etc.

To clear the cache in Windows you need to run the command ipconfig /flushdns.

After the steps described above, we can say that most of the work has been done to fully filter the content.

All that remains is to configure the network adapter in operating system, which is installed on your computer or make settings in the router (router).

Setting up a network adapter and router (router)

There is absolutely nothing left to fully launch the Rejector content filtering system on your computer or in your organization (office, school). You need to register the Rejector DNS servers: 95.154.128.32 and 78.46.36.8. Without this, there is no way to filter prohibited sites and content.

Setting up DNS servers to use Rejector on Windows (Windows XP, Windows Vista and Windows 7) is written. Therefore write new instructions I don't see the point. It's written there step-by-step instruction with screenshots.

But I couldn’t find the router settings for Rejector on their website. There are a lot of routers and therefore it is not possible to describe each router. The example shows instructions for setting up a router (router)D-Link DIR-300NRUB5.

Then the administrative panel of the router will open in all its glory, where you can make settings. If your router has already been configured by your provider or by you yourself and you have access to the Internet, then you need to make changes to the name servers (in in this case). To do this, go to the “Advanced” menu section and select “Name Servers”. Next, as shown in the screenshot, enter the DNS server of the Rejector: 95.154.128.32 And 78.46.36.8 .

Save the changes and reboot the router for the settings to take effect!

For example, I recently set up . In the control panel of this router you need to go to the menu section "Net", Further WAN and into the fields preferred and alternate DNS server enter the appropriate Rejector DNS servers.

If you have problems setting up your router, write in the comments below, we will try to help you set up contextual filtering.

If you do not want to spend money on a content filtering system for your home, small office or school (educational organization), then the Rejector service will be a suitable tool for you to block computers from unwanted content on the Internet.

Write in the comments how you protect your children and what tools you use to block unwanted sites on your computer.

To ensure that the user can be online safely, special programs have been developed to filter traffic and web content.

How content filtering works

The main goal of a content filter is to limit access to prohibited or malicious resources. This is achieved using lists of allowed/denied resources.

Every user needs protection, but children and teenagers need it especially badly. After all, many pages contain scenes of violence, eroticism, advertising harmful substances and alcohol. To protect children from such information, it is necessary to use a content filtering system.

Internet traffic filtering

Our company has developed a special Internet traffic filtering mechanism, which not only helps maintain network access in working order, but also ensures the continuity and integrity of business processes. The web filter allows you to manage the streams included in local network, automatically reducing its load. At the same time, the problems of inappropriate access to extraneous resources, irrational use of the network and working time are eliminated

An Internet traffic filtering system is necessary at different levels: for home use and for the corporate network. It exists in different forms:

• utilities;
• applications;
• browser add-ons;
• separate server.

A-Real Consulting company is actively developing different ways ensuring network security, providing customers with a comprehensive solution. We have extensive experience in implementing Internet content filtering systems in schools and organizations.

Our content filter works based on web traffic data reported by the proxy server module. Then a check is made against the list of prohibited resources. This database includes several million sites divided into categories, which allows you to individually configure web content filtering parameters.

Users of the Internet Control Server filtering system simply need to ban a category, and all sites on this topic will automatically become inaccessible.

Content filtering also includes anti-virus modules, automatically checking all incoming traffic for malware. Our solution guarantees reliability and security, providing all the tools to manage network access.

Content filtering in schools and educational institutions

According to statistics, more than 100,000 educational institutions have access to the Internet, where students are exposed to a stream of aggressive and potentially dangerous content. Therefore, the Federal System for excluding access to Internet resources that are incompatible with the tasks of upbringing and education of students in the Russian Federation (SID) was approved and approved.

In accordance with Federal Law No. 436 “On the Protection of Children from Information Harmful to Their Health and Development” and Federal Law No. 139 “On Amendments to the Federal Law “On the Protection of Children from Information Harmful to Their Health and Development”, installation of content filtering in an educational institution is a mandatory requirement.

Possible options

Internet filters can be configured in 2 ways:

1. contact your Internet provider for help;
2. install and configure specialized software.

In the second case, you will have to independently download and configure a content filter for a school or other organization. Our company offers to use the IKS Internet gateway. It is regularly updated and contains addresses of resources with information that is distributed in Russian Federation prohibited, i.e. complies with Federal Law No. 139 “On Black Lists”.

ICS functions for content filtering

• organizing access only to reliable resources;
• filtering access to resources from the Ministry of Justice list;
• restricting access by URL, keywords, patterns, regular expressions;
• the ability to create your own prohibiting and allowing rules;
• ready-made sets of rules for schools (just turn on) and a register of safe educational sites;
• security from malicious objects that seek to enter the local network, carried out using a built-in firewall;
• control of user access to the network;
• keeping records of consumed traffic.

Advantages of the Internet gateway ICS

• possibility of preliminary assessment and testing using a demo version for 35 days;
• unlimited duration of the licensed version;
• accessible training in the form of videos;
• free full version Lite up to 8 users;

ICS setup

Another advantage of ICS is the ease of installation and configuration. To do this you need to perform only 5 actions:

This is how you can easily set up Internet filtering, providing complete protection against external threats.

Type of organization

Select organization type Educational institution State-financed organization commercial organization

Prices DO NOT APPLY to private non-governmental institutions and postgraduate institutions vocational education

IKS license

Editorial

No ICS required Standard ICS FSTEC

To calculate the cost of FSTEC, contact the sales department

Delivery type

ICS ICS + SkyDNS ICS + Kaspersky Web Filtering

License type

New license License extension Technical support

Number of users

In this article we will look at a multi-platform (Linux, Windows) solution for effective content filtering, its installation and configuration. This filter can be used in schools or other educational institutions.

Introduction

First, a little theory, if anyone is not interested, you can move on to the next chapter. What kind of filtration is there? Traffic filtering can be of two types: server and client.

How server filtering works

There is a dedicated computer, the Internet is configured on it, and this Internet is distributed to other computers via a local network. Filtering occurs on a dedicated computer. Famous programs to organize server content filtering:

For :

• UserGate
• Kerio
• ISA Server
• SafeSquid
• Here you can enter many proxies on which you can organize filtering.

But there is one big drawback for solutions for Windows OS: almost all of them are paid, and if they are free, like MKF, then they require the installation of a paid product.

For Linux:

• DansGuardian
• Mindwebfilter
• and etc.

These programs are free. But they are more difficult to configure.

How client filtering works

On each computer where content filtering is needed, a program that does this is installed and configured. Examples:

Windows

• censor;
• netpolice;
• KinderGate and others

Linux

• netpolice ALT Linux, etc.

Theory

Now let's talk about something quite simple. free way content filtering, but still quite effective. Over the years I have tried many methods of content filtering, but this one has proven itself to be one of the best and simple solutions. It can also be used together with any of the other methods as a supplement.

What do we need for this?

• Any OS: windows or ;
• Mozilla Firefox browser or browsers based on it that support Firefox plugins and extensions;
• Internet connection.

How it works?

The Mozilla Firefox browser has many add-ons. Based on such additions, we will do content filtering.

Description of add-ons

The first addition on our list is WOT

WOT (Web of Trust) is a free browser add-on that warns the Internet user about potentially unsafe web pages while searching for information or making purchases. WOT is compatible with browsers such as Internet Explorer, Mozilla Firefox, Opera (in version 11 using the extension) Chrome. Wikipedia

This plugin also has parental controls. Using this plugin we will perform content filtering.

Second addition. Adblock Plus

Adblock Plus- an extension for browsers and other Gecko-based software: Mozilla (including mobile), Mozilla Thunderbird, Mozilla Suite, SeaMonkey, Songbird and Mozilla Prism, which allows you to block downloading and display various elements pages: excessively intrusive or unpleasant advertising banners, pop-ups and other objects that interfere with the use of the site. Wikipedia

Content filter- device or software to filter sites by their content, preventing access to certain sites or services on the Internet. The system allows you to block websites with content that is not intended for viewing.

The content filter works on a statistical principle, that is, it counts predetermined words of text and determines the category to which the site content belongs. The purpose of such devices or programs is to restrict access to the Internet for schools, businesses, religious organizations, etc. Most often, content filters are used to restrict access for children and adolescents, in educational institutions, libraries and workplaces in various institutions, and also gaming clubs and internet cafes.

Principle of operation
Filtering often takes place at the HTTP request level. To do this, the URL of the requested site is checked against the blacklist using regular expressions. Such lists must be regularly updated; protection with their help is considered ineffective. More advanced methods are pattern recognition and natural language processing. To classify sites according to various criteria (for example, “pornography / non-pornography”, “warez / freeware directory”, etc.), the text of the requested page is analyzed for the number of different keywords(e.g. “free”, “download”, etc.). These and other text properties are used to calculate the probability of falling into a dangerous category. If this probability exceeds a specified level (for example, 95%), access to the page is blocked.

The simplest programs allow you to enter words that the system will search for manually. The most complex devices already have a large vocabulary and require a ready-made database of links that have already been classified. As a rule, manufacturers provide periodic updates of the link database for complex devices. Those websites that are not automatically recognized are reviewed by a human and manually assigned a site category.

An obvious requirement for access restriction programs is classification speed.

NetPolice Lite

A lightweight version of the personal filter, which provides the most important functions for limiting user access to negative, unwanted and dangerous Internet resources. The most necessary categories and functions for safe use of the Internet are supported.

KinderGate

a paid program that has extensive capabilities and flexible settings.

http://www.kindergate.ru/ - Program website.

http://www.kindergate.ru/support/kindergate_setup - installation instructions.

http://www.kindergate.ru/support - Technical documentation for configuration and installation.

http://www.kindergate.ru/download/ - Here you can download the program.

WebOfTrust + AdBlock

free extensions for web browsers that will help protect your child from inappropriate content.

http://www.mywot.com/ru - Program website.

http://www.mywot.com/ru/faq - Questions and answers.

To install this protection tool, you need:

1. Follow the link http://www.mywot.com/ru/download and download the add-on for your browser
2. Follow the instructions during installation.
3. During installation of the add-on, you can register as a user. You can use the WOT addon and also rate websites without registration.

Registered users have more customization options.

Click “Install”

Follow installation instructions.