Internet speed check (monthly statistics)
Checking the speed of the Internet is a fairly simple task if a single measurement is required. There are a ton of online tests on the Internet for this. But…

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Personal Data Security
What is personal information, and why does the state develop entire laws designed to protect such data? Imagine that you are making an order online. In the process of forming…

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Destination of proxies and NAT
A proxy server is the link between users and the Internet. Proxy server - a server that is constantly on the Web, transmitting all requests from the user computer to…

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the network

Bat files, examples

You can perform all the examples published below not only by creating and running a BAT file containing these commands, but also copying them directly to the command line.

To open the command line in the right place (in the folder with files, for example), you need to call the context menu (RMB) with the Shift key held down:

command line call

You can read about how to work with the command line in this article. We pass directly to the teams. Continue reading

A bit about CCTV systems

When it comes to business security, peace of mind for the life and health of relatives, it is necessary to carefully approach the choice of security system. Over the past year alone, more than 100 thousand surveillance cameras have been installed in Russia!

Depending on where the camera is located, video surveillance systems can be external, internal and hidden. In any case, such systems monitor the object using a video camera. Using one or more cameras, you can follow it from one or several points.

Today, digital or analog systems are used. The first system uses analog means to record or reproduce a signal. As a result, the signal that will be transmitted from the cameras to the video surveillance monitors is presented in the same Continue reading

How to calculate a person’s location by IP

Each computer has its own network card – IP, designed specifically for searching, receiving and transmitting information. The IP address on the PC can be local, dynamic, or static. The latter is fixed directly to the device and remains unchanged.

Dynamic is provided by providers: it changes every time you disconnect from the network and connect to it again. Local is designed to connect peripheral devices in one territory (this can be a home network, office or an entire enterprise), as well as to create local networks. Depending on what kind of IP a person is using, you can determine his exact location or the zone from which he goes to the Internet. Continue reading

Online Programs
With the development of the Internet, cloud services and various online software are becoming more widespread. Some of the services are paid, but mostly services at such sites are provided…

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What is a firewall and why is it needed?
We will not go into little things like translating words, occupying them some part of the article. Just point out that a firewall (from the English - fire wall), or…

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Why does the computer not see the USB flash drive? 8 reasons
Sometimes at the most inopportune moment, when it is urgent to remove information from a USB flash drive to a PC, the computer refuses to see the new device. It…

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Home network: Ethernet or Wi-Fi
If you do not go into the jungle of network technology and do not utter such terrible words as a router, a switch, a hub and a routing table, the…

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