What Is A VPN Concentrator & How To Actually Use It [Detailed Guide]


In spite of the name, VPN concentrators are usually found in corporate settings where many devices and multiple networks are used to protect servers. What is a VPN Concentrator?

While VPN concentrators are quite common, their uses are not well understood in the world, and thus a great many of us have no idea what they are or how they work.

Thus, we present a complete guide on what a VPN concentrator is, how it works, and when and where to use it.

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VPN Concentrator

A VPN Concentrator is a device that can establish secure connections across a TCP/IP network, such as the Internet. Using this feature, users can establish secure private connections across public networks without having to worry about hackers intercepting their communications.

The VPN Concentrator is a networking device that enables numerous VPN tunnels to share a single network connection. VPN tunnels are secure connections that protect data from the Internet using modern encryption techniques.

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vpn concentrator

Site-to-site VPN designs are often built using a VPN concentrator.

It may be able to

  1. Construct and configure tunnels.
  2. Users are authenticated before tunnel/IP addresses are assigned to them.
  3. Data encryption and decryption
  4. Ensure that data is delivered from beginning to finish.

After reading so far, you may now know what a VPN concentrator is.

How Does A VPN Concentrator Work?

VPN concentrators use tunneling protocols to construct and manage VPN tunnels. It accepts incoming data, encrypts and de-encrypts it. It wraps incoming network data in encrypted packets and sends it across the VPN tunnel.

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In addition to user authentication, a VPN Concentrator assigns IP addresses to each user. It also handles network interactions using standard protocols and manages cryptographic keys.

how does a vpn concentrator work

The “man-in-the-middle” attacks take advantage of VPN concentrators and routers to listen in on connections to a target company’s network.

You’ve probably been told many times not to connect to your workplace network through public Wi-Fi. Because publicly accessible routers may not even require passwords to connect, cyber attackers can quickly sniff login credentials or intercept emails.

Why Use VPN Concentrators?

VPN concentrators deliver high-performance output, are very efficient and productive, and maybe scaled up utilizing Scalable Encryption Processing (SEP) modules. These allow consumers to boost overall capacity and performance even further.

why use vpn concentrators

VPN concentrators can accommodate tens of thousands of users. With remote-access users connected to the VPN network, VPN concentrators can function at the core of a small organization. They’re also necessary for businesses and organizations, as they can handle more than 10,000 users with ease.

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VPN Concentrator VS. VPN Routers

Both devices do much the same thing, yet they’re different in many ways. A concentrator can manage thousands of VPN clients, resulting in excellent business environments where employees may securely connect to private networks from anywhere.

On the other hand, VPN concentrators are not suitable for use at home. Unless you live in a top-level government or private workplace with many corporate secret data, buying and installing a device is not a good investment.

vpn concentrator vs. vpn routers

Our small businesses and homes can use routers for connecting to private networks. VPN routers are less expensive than concentrators, yet they often have the same functions as concentrators, such as USB connections, Ethernet ports, wireless connectivity, etc.

So far, you know what a VPN concentrator is and how it works. Let us see its encryption protocol types.

VPN Concentrator Encryption Protocol Types

A VPN concentrator employs at least two encryption protocols to protect communications, discussed in greater depth below.

Encryption Using IPsec

Most VPN concentrators employ Internet Protocol Security (IPsec) to protect connections. Although the protocol is incredibly safe and effective, it necessitates installing VPN connection software on all devices in a business.

encryption using ipsec

It’s best for a corporation with a headquarters and multiple branch offices.

Encryption With SSL

Another alternative is to use Secure Socket Layer (SSL) encryption. This protocol uses the Transmission Control Protocol (TCP) Port 443. It does not necessitate the installation and configuration of software on users’ computers or devices.

encryption with ssl

It also allows them to connect to their business network from any location; however, they can only connect to web-based applications.

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Key Benefits Of Using VPN Concentrators

Users having internet connections from anywhere globally may safely connect to the company network. The VPN Concentrator reroutes and reshapes its network traffic.

Over an encrypted tunnel, the encryption procedure transfers the data and requests to the business server after completing the encryption process. When a communications request is generated, the VPN tunnel usually is created instantaneously.

When you first run the program, it will immediately construct a tunnel to the VPN concentrator, allowing you to receive any data that comes via it.

We can set software programs to be Always-On, which means that whenever you turn on your device, it will connect to the corporate network via the VPN concentrator over an encrypted tunnel.

A company’s network can be hacked by hackers to plant malware or steal confidential data. In these commercial contexts, VPN concentrators provide security and encryption.

key benefits of using vpn concentrators

The use of a remote desktop program can be helpful for home users, especially if you have a changing IP, but is not appropriate for company servers.

At the absolute least, they should have a VPN router connected to the network. Because manufacturers no longer produce standalone concentrators, this term has become synonymous with VPN concentrators.

They include the features of multifunctional routers that also have a firewall. A VPN concentrator acts as a specialized router. They use more complex protocols and algorithms.

Frequently Asked Questions

Is VPN Concentrator a router?

Yes, VPN concentrators are routers. However, not the ones you use at home. These concentrators are used explicitly for integrating multiple VPN networks.

What are the disadvantages of using a VPN?

As good as it looks, using VPN has its disadvantages as well. Lack of granular security, unreliability, degraded performance are some of the drawbacks we face while using a VPN.

What are the types of VPN networks?

Although there are numerous VPN networks available, three major types of VPN prevail worldwide: IPsec tunnels, Dynamic MultiPoint VPN, MPLS-based L3VPN.

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There are various options for securing your networks with dependable encryption and protecting them from external threats. One of the most complex security network solutions available is the VPN concentrator, which is only one of the options.

While prominent vendors’ VPN concentrators support both SSL and IPsec VPNs, lower-cost equipment often only supports one of these protocols.

Some applications are incompatible with SSL-VPN clients. Furthermore, specific SSL-VPN systems may not allow for centralized storage or shared access to resources like printers. Your unique needs will determine the procedure you should employ.

IPsec VPNs are the most secure and give a higher level of security than SSL-based VPNs. In addition, the SSL-VPN concentrator will be easier to set up and administer, lowering the possibility of security flaws due to misconfiguration.

We hope to answer your questions on what a VPN concentrator is and how to use it.

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