Monthly Archives: October 2019
VPN Basic Concepts and Classification
The term VPN (Eng. “Virtual Private Network”) refers to a group of technologies that provide a network connection, or the so-called logical network, functioning on top of some other network, usually the Internet.
Although data is transferred to a VPN over networks with a low level of trust, thanks to the use of cryptography, the level of trust in a VPN can be arbitrarily high. Among the cryptography tools used are encryption, means to protect against changes in transmitted messages, public key infrastructure and authentication. Depending on the final destination, the VPN implements three types of connections: network-to-network, node-to-network and node-to-node.
VPN implementation and structure Continue reading
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 as it is also called brandmauer (with German – fire wall) in Russian has two names that display its purpose (inter) firewall. This is a screen that protects the user from influences coming from outside. When connecting to the Internet, having a firewall is not a luxury, and indeed such a risk is hardly justified, it will most likely lead to raking up a bunch of viruses, or even just to reinstall the system.
In addition, the firewall performs the function of blocking access by unauthorized persons to your computer via the network. This is not to say that the standard Windows Firewall is bad, it is quite suitable for the initial level of protection. But this is if you do not store important information on your computer or do not work with means of payment via the Internet. If you are interested in the security of your data, then changing the Firewall will not be a stupid idea. Our article, in fact, is written based on what would help you, ordinary users, to choose a firewall that suits you. Continue reading
Security in Firefox Browser
When working on the Internet, the highest priority should be to ensure the safety of users. Indeed, in the “global web” there is a huge number of fraudulent sites and simply dishonest personalities. To protect their users, Mozilla developers put a huge amount of effort. They came out and went out well, but they did the most important thing – they gave a start to their users. Simple and intuitive add-ons (plug-in) began to appear quite quickly. It is about such plugins that will be discussed in this article.
Written both by craftsmen and professional programmers, these plugins perform one, but very important function – to warn the user about the danger that awaits him. They work quite simply, in fact in two stages. The first step is to track complaints or recommendations of a particular site and by comparing their number we get a positive or negative reaction to the site. Some programs simply suggest that the site is dangerous, others allow you to see why, but they are based on the same algorithm – collecting and displaying information. Continue reading
