As you know, virtual private networks are used to protect data on the Internet for users. Hence today’s topic is on How VPN works and what virtual private network and how to use it. VPN or virtual private networking that allows computers or entire systems to be connected to the Internet securely.
If the office is located in Mumbai and needs to be securely connected to an office in Delhi, a VPN client-server here allows the VPN client to connect the VPN service securely. So today, in this blog, we are going to talk about How VPN works.
After all, how VPN technology works and its practical application in the real world. VPN technology is nowhere sophisticated as most people feel that a VPN is a very complicated process.
So, today this blog is going to describe on how VPN works (virtual private networking). This allows computers or networks to connect to the Internet securely. So to understand VPN or virtual private networking, one has to go back to what the Internet is.
So if you are in Mumbai right now, perhaps thousands upon millions of routers pass data over the Internet. So if you go from Mumbai to contact someone in Delhi using the Internet, then you go through one of these routes to get to Delhi.
So, users information from the first router to the second, second to third. In this way, the information goes to the office in Delhi. So, this router automatically rebuilds a new communication of paths in this system. Thus if this router is damaged, now your connection to Delhi can be obtained through another router.
Use of VPN Technology
The primary reason for inventing VPN technology is that the user has to keep his information secure. Basically, on the Internet, all communication goes through a central hub. All of which are transmitted via the Internet called a communication router.
All information goes through the files that are being transferred through it. So if you are a bad man, you can somehow go into this router. You can collect all the information that passes. You can find this information which is called a man-in-the-middle attack.
You start reading everything that is going by, so when the Internet was created from a physical security standpoint, it was very insecure. If half of these routers are destroyed; communication still exists from computer security from a data security standpoint. It was very, very vulnerable.
You can get information from the router server. You can get all that information. That is why they now go with virtual private networking, which can be connected to the Internet safely.
VPN Service Provider
Using a virtual private network (VPN), when you feel your data is essential, and if you want to be secure on the Intenet, you can use a virtual private network. Here you can work on the Internet safely, there will be no problem of any kind, but sometimes there can be a problem with the internet speed.
There are many virtual private network service providers in India, and you can take service of any one of them. These are the Top 5 VPN service provider in India.
- Express VPN
- Cyber Ghost
- IP Vanish
- Hotspot Sheild
There are many more VPN service providers in India; you can try their service.
How VPN works
So how VPN does work, It is through a pair of safety devices that the first trip is called some tunnel protocol. So when you are trying to connect to any computer or server mentioned in Delhi, the tunnelling protocol sets up a tunnel for you between Mumbai and Delhi from where the information is passing.
So these data (information) goes inside this tunnel. It then encrypts all of the information, then creates a tunnel around the information that you’re sending. Then you encrypt all of the information in the tunnel to the people you’re sending.
What happens or how VPN works? if a bad man is sitting at a router. They’re not able to know to see all the traffic that is going through the secure system which encrypted.
If they are sophisticated bad man, they can enter that tunnel, but even if they sneak into the tunnel to try to pull your data into that tunnel. Well, that information is encrypted, even when they grab that data, but are not able to do it thoroughly.
Well, the cooling part with VPN is part of this tunnelling protocol is if there is a bad man. He tries to penetrate this tunnel will try to detect penetrations.
So it is such that you know everything is going well if it detects that someone is trying to grab it so the tunnel will shut itself and recreate itself through another set of routers.
If a bad guy tries to enter the tunnel, the entire tunnel is closed. The tunnel then finds a new path through the Internet. Even if the bad guy is still here in this router, or going through this router, that bad guy will no longer be able to try to grab your information.
VPN TUNNELLING PROCESS: VPN tunnelling is a process in which data is transported securely through the Internet without compromising privacy. There is no physical tunnel exists; the information (data) has to runs through the same network (wires) as any other data passing through the same private network.
Instead, VPN tunnelling employs concepts known as data encapsulation and encryption to carry data traffic through non-secure environments safely. Encapsulation insulates packets of data from other data travelling on the same network, while encryption makes data unreadable.
The tunneling protocol, which is considered as a tube, thinks of it as a data tube, which runs through the Internet. So the VPN technology tries to secure the information (data) in that virtual tunnel and then the entire information is sent securely through the same private network inside the virtual tunnel.
What is VPN Protocols
VPN protocol provides a high level of security to connected systems. Underlying network infrastructure cannot afford it. A variety of different protocols are included to secure and encrypt users and corporate data. Like…
- Secure Sockets Layer and Transport Layer Security.
- IP Security
- Point-to-Point Tunneling Protocol (PPTP)
- Layer-2 Tunneling Protocol (L2TP)
- Open VPN
What is VPN Technolgy
That VPN virtual private networking is a client-server technology, so client-server technologies what that means is a server that provides a service. Then you have a client that tries to connect to the server to get the service.
So whenever you’re done dealing with a VPN server, This VPN server will be sitting in your office, or wherever it is that you’re going to be trying to connect. Then, you have a VPN client. The VPN client is generally installed on the computer.
That you’ reusing that will be connecting to this office somewhere. So if you’re using a laptop computer you may install, or you may use a VPN client, that is already installed on to that computer. So what happens is you turn on the VPN client on your computer on your laptop. It’ll say where are we trying to connect.
So generally you’ll give it something like an IP address or an external IP addressable where you’re trying to connect. So you know this office here has an IP address of 220.127.116.11 let’s say so in the VPN client.
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You will put that IP address you will then put your username and your password what will happen is when you can try to connect to the VPN server in the office. Your connection will go all the way through the Internet you know zigzag around the Internet and then come here to this VPN server.
The VPN server will then look at the credentials that you gave it the username and password and then it’ll say there is this person allowed on the network or not. If you have the right credentials, it will enable you to be on the network, if you don’t have the right connect credentials, it will shut you out.
You won’t be able to use the network, so this is the primary system of how VPN communications happen. Now, something that you should understand is that there’s a lot of different VPN software and hardware out there.
TYPES Of VPN
There are many types of VPN available for Network administrators.
- Site-to-site VPN: A site-to-site VPN uses a device to connect one network to another network in various location. Most site-to-site VPNs were connecting to the Internet using IPsec.
- Remote access VPN: Remote access VPN uses to connect to a VPN gateway server on the organization’s network. The device requires to authenticate its identity before the gateway can provide access to internal server resources, such as printers, file servers etc.
- Mobile VPN: A Mobile VPN server still sits on the edge of the company network, enabling secure tunnel access by certified. Each tube path is bound to a logical IP address. This valid IP address is affixed to the mobile device, regardless of where it rotates.
- An active mobile VPN provides continuous service to users and can seamlessly switch to all access technologies and multiple public and private networks.
- Hardware VPN: Hardware VPNs provide several advantages over software-based VPNs. Besides it increased security, hardware VPNs can provide load balancing to handle larger client loads. Network administration can be controlled through a web browser interface independently. A hardware VPN is more costly than a software VPN.
- DMVPN (Dynamic Multipoint Virtual Private Network): Dynamic multipoint virtual private network (DMVPN) is a secure network that exchanges data between sites without passing through traffic through an organization’s virtual private network router.
- VPN Appliance: A VPN device, also known as a VPN gateway tool, is a network device that enhances security features. SSL (Secure Sockets Layer), also known as a VPN tool, is under the influence of a router that provides security, authorization, authentication, and encryption for VPNs.
- Reconnect VPN: Reconnecting VPNs is a feature of Windows Server that allows virtual private network connections to be kept open during brief interruptions of Internet service. Typically, when a computing device that uses a VPN connection leaves its Internet connection, the end-user must reconnect the VPN manually.
- To reconnect the VPN keeps the VPN tunnel open for a configurable time so that Internet service is restored, the VPN connection is also restored automatically. This feature was designed to improve usability for mobile employees. We learned how VPN works, but we will also learn how VPNs protect users.
How Vpn Protects Users
So you can securely connect to your office. The tunnel protects your data, the data that’s being sent through the tunnel is encrypted. If anyone tries to penetrate that tunnel, the entire tunnel shuts down and then tries to recreate itself.
So you’re going to have a VPN server in your office. You know the building you’ retrying to connect to and then your laptop computer or your smartphone or whatever will have a VPN client will that which will then connect to this VPN server you’ll connect using the external IP address.
You’ll give it your username your password that will all be sent to the VPN server. If it is correct, then you’ll be allowed to be on the network. If it is incorrect, you won’t be allowed to be on the network, but that is the essence of what VPN virtual private networking is.
If you have this VPN connection as soon as you set this up to your computer, thinks that it’s inside the building. The computers inside the building believe that it’s inside the building, so basically, it allows you to act as if you’re local even.
So there’s a couple of things to think about with this that that is very very important if you’re going to be using VPN in the real world.
VPN Connection Problems
So what kind of attacks happen here. Attack It seems that if the data flow slows down for some reason, then the data signal is not stable. If there are too many dropped packets, well many packs with terrible antiquated wiring drops, the old installation slows things down and messes things up.
So many times as VPN connections are terrible and almost completely unusable, the reason for this is that the old wiring in the building. So bad that many packet loss VPN technologies.
If your building has terrible wiring, your VPN connection may bounce up and down. Because VPNs think someone is trying to hack to try to penetrate that connection.
SUMMARY: VPN technology creates a tunnel, it encrypts the data within the tunnel and then if any bad man tries to penetrate the tunnel path. It automatically drops the connection and tries to recreate it somewhere else, and that’s all there is to it.
So you can set up a VPN connection without needing to Microsoft one of the reasons why almost everybody uses Microsoft VPN. Because it’s built into their servers and their client is operating systems.
If you buy windows server, it has routing and remote access their VPN server built into the server for free. You don’t have to pay for this extra, so it’s made in the server then if you have any version of Windows build after like Windows edition. There is a VPN client service built into the operating system.
So you configure the VPN software on the server you can figure the router, and then you set up the VPN client on the computer, and it will be able to connect to the server.