also an interesting blog
Enterprise VPN in plain language
Today, many who are interested in computer technology and communications have heard about such a popular technology as VPN. However, most of the articles describe subtle nuances of technology that are often not understood by less experienced network users. This article will help you understand the basics of VPN technology. We tried to state everything in the simplest language and include at least technical terms in the text.
The acronym VPN stands for Virtual Private Network (Virtual Prvate Network). This technology is designed to organize an internal network within another network with reliable protection of the transfer of all data between users. Typically, the core network for a VPN is the Internet.
In order to imagine the meaning of technology, it is enough to take as a basis any company that has a head office and several branches in different parts of the city or even in different regions of the country. Each branch has its own local area network for data exchange. At the same time, data transfer between branches is carried out through publicly and insecure channels. Continue reading
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
