The beginning and end of VPN

Most of the time internet users come across the term VPN. The idea of ​​most users is that VPN is a service that allows you to browse the Internet through servers in different countries. It allows you to enjoy the internal sites and content of those countries. Sometimes the technical flaws of some websites can be solved through VPN.

Network and Internet
A network is created by connecting multiple PCs and servers. All PCs and servers connected in the network can exchange information with each other, use mutual hardware and software. Such networks, where the devices can communicate with each other নয় not outside বাইরে are called private networks. Through the creation of connections between private networks that started the Internet, which has gradually become the world wide web of today.

Advent of VPN
Suppose an office has a very large private network. An official wants to be connected to a PC or server within this network, but he is out of the office, having to communicate via the Internet. In this case, the settings of the office PC or server can be changed, so that they can be used by logging in via the Internet. But this method is very insecure, hackers often break into these login methods and steal data. Virtual private network or VPN has been created to avoid this problem. VPN service will be running on the office server, with which the officials will be connected through internet. Communication with the server and user’s PC or phone will be via the Internet; But all types of data will be encrypted, So that no one can read it. Once connected, the user’s PC or phone will be considered part of the private network. As a result, he can use all the services of his internal network even if he is not in the office. Since the data will be encrypted and only the server will run communication services through the Internet, this will reduce the risk of data loss to hackers.

Additional benefits
of VPN Since the user’s PC or phone is covered by the internal network of the office through VPN, the servers of the websites will also communicate with the user through the office server while using the Internet. If the office server is in another country, then the user can see the content for that country even if he is not in that country. If a website does not work in the user’s own country, it can also be seen, because the user’s virtual location is in the VPN server’s country.

Data security can also be ensured through the use of VPN. When using the Internet, the user logs every document of exactly what the user is doing, going to a website or viewing the content, which they can sell to someone else if they want. In most cases, they sell this information to advertising agencies, although many times the user information is more than other companies. When using the Internet via VPN, the ISP will see that the user has contacted only one server, all other information is encrypted so they will not be able to log them.

The rise of VPNs,
data security and freedom to view foreign content were not the main goals of this technology. But due to the growing popularity of VPN among the users for these two tasks, several VPN service providers have emerged in the last few years. These services are often available free of charge; But for quality and fast service you have to buy a subscription. In the interest of data security as well as internet usage through servers of different countries, many users are buying subscriptions, phones and PCs as well as many are running VPN directly on home and office internet routers, so that all the devices in the network are under VPN.

Validity of VPN usage
According to the law of Bangladesh, the use of VPN is only valid in special cases. Government and non-government organizations will be able to launch VPN services for the needs of their officers and employees. Internet service provider license is required to provide VPN service. VPN service can only be used for data exchange, VPN cannot be used for any type of voice call or VoIP service. Internet service providers will keep a log of whether users are using VPN and submit it to the government. The user will keep a log of which IP address the VPN is connecting to, BTRC will monitor whether the VPN server running on that IP is valid or not. If necessary, the government can close the VPN tunnel at any time and if it is illegal, both the user and the service provider will be brought to justice by law. VPNs cannot be used to view or use any type of content that is blocked under government law.

VPN can only be used for the exchange of official information, not for any tripartite information or content. The ISP has been given the responsibility and power to check whether the user needs a VPN tunnel and to shut down the VPN service if necessary.

Caution in using
VPN services Security is the key to VPN service, and at its core is the server providing the service. It is almost impossible to decipher what information is being exchanged between the user and the server. But if the service provider server is insecure or if the service provider wants to use users’ information in a dishonest way, then the user has nothing to do. This is exactly what some free VPN companies do. Users sell information to advertising agencies, leave their login IDs and passwords in the logs, and if credit card or bank information is somehow passed through their servers, there is no question. Interestingly, many times hackers launch various types of free VPN services just to steal information. Therefore, anonymous VPN should not be used.

Some of the most popular VPN services
are Cloudflare VPNs, known as 1.1.1.1. It can be used for free, in which case the ISP cannot see what website the user is visiting or what information they are providing. However, for all other VPN services, you have to buy the service through the in-app purchase inside it.

Hotspotshield has been providing users with free VPN services for many years. In contrast users have to see some ads. The speed of their servers is also quite slow, but there is no record of data logging and sales.

Nord VPN, once the most popular, is still one of the best premium VPN services. There is also private internet access, Express VPN, Surfshark and others. Although these services can be used reliably; But according to the domestic law, one must have the qualification to use it. Before using any VPN service, you must verify that its use is valid for you

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