All About Virtual Private Network and Benefits

All About Virtual Private Network and Benefits

A virtual private network (VPN) extends a private network through a public network and allows users to send and receive data through public or shared networks as if their computing devices were directly connected to the private network.

Virtual Private Network and Benefits

Virtual Private Network
Virtual Private Network and Benefits

Therefore, applications running on a computing device, for example, a laptop, desktop computer, smartphone, through a VPN can benefit from the functionality, security and administration of the private network. Encryption is a common, but not inherent, part of a VPN connection.

VPN technology was developed to allow remote users and branches to access corporate applications and resources. To ensure security, the private network connection is established through a layered encrypted tunnel protocol, and VPN users use authentication methods, including passwords or certificates, to gain access to the VPN.

In other applications, Internet users can secure their connections with a VPN to bypass geographic restrictions and censorship or to connect to proxy servers to protect personal identity and location to remain anonymous on the Internet.

However, some websites block access to known VPN technology to avoid circumventing its geographical restrictions, and many VPN providers have been developing strategies to overcome these obstacles.

VPN Advantages
VPN Advantages

A VPN is created by establishing a virtual point-to-point connection through the use of dedicated circuits or with tunnel protocols over existing networks. A Virtual Private Network available on the public Internet can provide some of the benefits of a wide area network (WAN). From the user’s perspective, the resources available within the private network can be accessed remotely.


The first data networks allowed VPN-style connections to remote sites through dial-up modem or through rented line connections using virtual circuits X.25, Frame Relay and Asynchronous Transfer Mode (ATM) provided through proprietary networks and operated by telecommunications operators. These networks are not considered true VPNs because they passively protect the data that is transmitted by creating logical data streams.

They have been replaced by VPN based on IP and IP / Multi-Protocol Label Switching (MPLS) networks, due to significant cost reductions and greater bandwidth [4] provided by new technologies such as the digital subscriber line ( DSL) and fiber optic networks.

Virtual Private Network can be characterized as host to network or remote access by connecting a single computer to a network or as a site by site to connect two networks. In a corporate environment, remote access VPNs allow employees to access the company’s intranet from outside the office.

Site-to-site VPNs allow employees in geographically disparate offices to share the same virtual network. A VPN can also be used to interconnect two similar networks through a different intermediate network, such as two IPv6 networks connected through an IPv4 network.

VPN systems can be classified by:

  • The tunneling protocol used to tunnel traffic
  • The location of the tunnel termination point, for example, at the edge of the client or network provider
  • The type of connection topology, such as site to site or network to network
    security levels provided
  • The OSI layer they present to the connection network, such as layer 2 circuits or layer 3 network connectivity.

Security mechanisms

VPNs cannot make online connections completely anonymous, but they can generally increase privacy and security. To prevent the disclosure of private information, Virtual Private Network generally only allow authenticated remote access through tunnel protocols and encryption techniques.

The VPN security model provides:

confidentiality so that even if network traffic is detected at the packet level (see network sniffer and deep packet inspection), an attacker would only see encrypted data

sender authentication to prevent unauthorized users from accessing the VPN
message integrity to detect any case of manipulation of transmitted messages.

Secure VPN protocols include the following:

Internet Protocol Security (IPsec) was initially developed by Internet Engineering Task Force (IETF) for IPv6, which was necessary in all IPv6 implementations that meet the standards before RFC 6434 made it only a recommendation.

This standards-based security protocol is also widely used with IPv4 and the Layer 2 Tunnel Protocol. Its design meets most of the security objectives: availability, integrity and confidentiality.

IPsec uses encryption, encapsulating an IP packet within an IPsec packet. Decapsulation occurs at the end of the tunnel, where the original IP packet is decrypted and forwarded to its intended destination.

Transport Layer Security (SSL / TLS) can tunnel the traffic of an entire network (as it does in the Open VPN project and the Soft Ether VPN project) or secure an individual connection. Several providers offer remote access VPN capabilities through SSL. An SSL VPN can connect from locations where IPsec has problems with network address translation and firewall rules.

Data gram Transport Layer Security (DTLS): used in Cisco Any Connect VPN and Open Connect Virtual Private Network to solve the problems that SSL / TLS has with TCP tunneling (TCP tunneling over TCP can cause large delays and connection abortions).

Microsoft point-to-point encryption (MPPE) works with the point-to-point tunnel protocol and in several compatible implementations on other platforms.

The Microsoft Secure Socket Tunnel Protocol (SSTP) tunnels into the Point-to-Point Protocol (PPP) or the Layer 2 Tunnel Protocol through an SSL 3.0 channel (SSTP was introduced in Windows Server 2008 and in Windows Vista Service Pack.

Virtual private multi-route network (MPVPN). Ragula Systems Development Company owns the registered trademark “MPVPN”. [eleven] VPN Secure Shell (SSH): OpenSSH offers Virtual Private Network tunnels (other than port forwarding) to secure remote connections to a network or links between networks.

The OpenSSH server provides a limited number of concurrent tunnels. The VPN function itself does not support personal authentication.


Tunnel endpoints must be authenticated before secure VPN tunnels can be established. Remote access VPNs created by the user can use passwords, biometric data, two-factor authentication or other cryptographic methods. Network to network tunnels often use passwords or digital certificates. They permanently store the key to allow the tunnel to be established automatically, without administrator intervention.


All Benefits

Virtual Private Network are more popular than ever today, but despite that, there are still many people who don’t know what that service can offer them. Well, in this article we will discuss the real benefits and disadvantages of VPN services, to make it easier for you to decide if they are right for you or not.

VPN services secure your online connections

WiFi is everywhere today, and it is extremely convenient to use, especially if you have a tight mobile data plan. The only problem with free Wi-Fi is that it is often not secure, which means that you are putting your personal data at risk every time you use them. After all, cyber criminals can discover a lot about you, which can lead them to steal your:

  1. Credit card details
  2. bank account details
  3. Login credentials via email

However, if you use a VPN, you will not have to worry about those dangers. Why? Because a VPN uses encryption to secure its online communications, effectively ensuring that no one can monitor them. Basically, if a hacker tried to look at your connection traffic, he would only see gibberish.

This is also the reason why VPNs are also a good option to access work files remotely. If you ever need to verify a customer file while taking a break in a cafeteria and using your WiFi, your best option is to use a VPN to ensure that no possible hacker can compromise your connection and your work data.

A VPN can avoid bandwidth limitation

Haven’t you heard of bandwidth limitation yet? Basically it is when your ISP limits your bandwidth, effectively reducing your online speeds. They can do it regularly, or only once a week or month. Usually, ISPs do that to improve their services by getting rid of network congestion and making sure there is enough bandwidth for all users.

However, more often they participate in bandwidth limitation as a way to “convince” users (like you) to buy more expensive subscriptions and data plans.

Well, the good news is that, since a VPN encrypts all your Internet traffic, your ISP will not be able to see what you are doing online. They will not know if you are using “too much” bandwidth to play online games, download files or stream TV shows. Therefore, they cannot limit their bandwidth by doing any of those things.

VPNs can prevent firewalls

When you are at work, school, the airport or even in a hotel, you may have to deal with annoying network firewalls that prevent you from accessing certain websites. Network administrators do that because they often need to comply with various regulations, but that doesn’t do it just for you.

Fortunately, you can easily skip any firewall you encounter with a VPN, as it hides your IP address, the address to which the firewall restrictions have been applied.

And yes, a VPN would even allow you to avoid government-imposed firewalls (such as the Great Firewall of China, for example), so you won’t have to deal with any government censorship while browsing the Internet.

VPNs offer secure torrents

Torrents are not really dangerous if you know what you are doing, but they can jeopardize your privacy if you are not using a Virtual Private Network. You see, all Swarm members (all people who download and upload a torrent) can see their real IP address. That means you have unwanted strangers who can see what country and city it is from, and potentially find out what your zip code is and who your ISP is.

Also, don’t forget that torrents can be illegal according to the laws of your country. Using a VPN is a smart way to ensure that you don’t end up in legal problems, receive DMCA notices or that your ISP terminates your contract just by downloading a simple torrent.

VPNs improve online games

Because a VPN encrypts your connections and hides your IP address, there are many reasons to use that service to improve your gaming experience. You can play in any geographic region you want, you can play forbidden games, stay safe from DDoS attacks and you can even avoid unfair IP bans.

In case you want to get more information about VPNs and games, see our detailed article on that topic.

VPNs could help you avoid price discrimination online

Online retailers and airlines sometimes like to show different prices to their website visitors based on the geographic region they come from. They usually do it to better segment their markets and also to generate more profits. Of course, having to pay more money for the same product / service just because you are from a different part of the world is not fair.

As a Virtual Private Networks hides your IP address, it also masks your real geographic location. So, if you’re from a more developed country (like the U.S., for example), you might try to make it look like you’re from a less developed area of ​​the world to get a better price.

Just remember that a VPN is not 100% guaranteed to always help you deal with online price discrimination. Why? Because websites can sometimes use cookies (files that are downloaded to your device) to “remember” your device, which may result in you being exposed to higher prices when you visit the website again. In general, it is also better to clear the cache in addition to using a VPN.

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