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What makes VPN encryption secure?

Updated: Nov 4, 2021

How can a company protect itself from attacks? The answer is first of all simple: it is all a question of data encryption. Good quality data encryption ensures that no unauthorised person or organisation has access to the data that you as a company make available to your employees, business partners and customers - and they to you. This is where the VPN comes into play.

Mediacom Business VPN Internet
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There is no end to reports of hacked websites and customer accounts. Corporations are just as much victims of Internet attacks as states and small businesses. The fact that today's users can access data on all their end devices, conduct online banking transactions, view their medical history or even edit company data anywhere in the world is thanks to a single circumstance: the data is stored somewhere on a server or cloud that is connected to the internet. No matter what services you offer, protecting customer data and internal documents should therefore be a top priority. Secure Virtual Private Network is a good choice for encrypting data transmission in your network.


This already hints at what it is all about: creating a network that is firstly private and secondly virtual. This means that no cables need to be specially laid; instead, encryption protocols are used to create secure, "virtual" lines that cannot be viewed from the outside and consequently remain exactly what they promise: private.


With a Secure VPN network, you set the course for secure data traffic that is very difficult to crack. You can find out how a Secure VPN works and how secure it is here.


What is VPN encryption and how secure is it?

Encryption is the conversion of data into a ciphertext that can hardly be decrypted by unauthorised persons. During encryption, the data is sent through a VPN tunnel to an authorised recipient, who decrypts the data again.

The general standard for encrypting data is AES (Advanced Encryption Standard). AES is available in three versions with key lengths of 128 bits, 192 bits and 256 bits. AES-192 and AES-256 are approved in the USA for government documents with the highest level of secrecy. It can therefore be assumed that it is the most secure variant of data encryption. For business purposes, AES-128 encryption is sufficient. Depending on the security level, data can also be encrypted multiple times, which requires more computer capacity. In another article, we deal with the question of whether the VPN affects the internet speed and provide corresponding answers.


What is the VPN tunnel and how does it work?

A VPN connection is always established peer-to-peer from a client (e.g. laptop or smartphone) to a server. To establish the connection, the access data of the VPN and the IP address of the server are required. The VPN server can be a computer or the router in the office. The VPN tunnel is the encrypted connection between the client and the server when transferring data.

It is best to configure the router as the VPN server, as this is usually always switched on. If you choose a computer, you must ensure that it is always running to accept connection requests.


Which VPN for my company structure?

UPC Business offers both full-mesh and hub-and-spoke configurations for VPN. With the full-mesh configuration, each location can communicate directly with every other location. With hub-and-spoke, on the other hand, the data flow is always via the hub, the main location of the data. In relation to your company, the decision depends on the size of the company as well as on the structure (number of locations, decentralised locations, etc.). Furthermore, reliability, stability and security are important components in relation to the VPN selection for a company. A stable VPN is a central requirement for secure data exchange.


Security and reliability are the top priorities of VPN. With an encrypted VPN, you connect national and international company locations in a unified communication structure.


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