VPN encryption –
how secure is secure? 

How can a company protect itself from attacks? In the first instance, the answer is simple: it is all a question of data encryption. The good quality of this ensures that no unauthorised persons or organisations have access to the data that you as a company make available to your employees, business partners and customers – and vice versa. This is where VPN comes into play.

Reports about hacked websites and customer accounts are common. Large companies can be the victim of Internet attacks, as can states and small companies. The fact that users can access data on all their devices today, carry out online banking transactions, view their medical history or access company data from anywhere in the world is thanks to one thing: that the data is stored somewhere on a server or cloud that is connected to the Internet. Regardless of what services you offer, protecting customer data and internal documents should have top priority. Secure Virtual Private Networks can be used to encrypt the data transfer in your network.

The name says it all really: a network is created that is both private and virtual. And so no cables need to be laid, but instead secure, «virtual» lines are created through encryption protocols that cannot be seen from the outside and therefore remain private.

With a Secure VPN network you set the course for secure data traffic that can only be hacked with great difficulty. Find out here how a Secure VPN works and how secure it is.

What is VPN encryption and how secure is it? 

Encryption refers to the conversion of data into ciphertext that can only be decrypted by unauthorised persons with great difficulty. In the encryption process, the data is sent through a VPN tunnel to an authorised recipient who then decrypts the data again.

AES (Advanced Encryption Standard) is the general standard for encrypting data. There are three versions of AES with key lengths of 128 bits, 192 bits and 256 bits. AES-192 and AES-256 are authorised in the USA for official documents with the highest level of secrecy. So it can be presumed that these are the most secure versions of data encryption. AES-128 encryption is sufficient for business use. Depending on the security level, data can also be encrypted several times, which requires more computer capacity. In another article we discuss the question of whether VPN reduces Internet speed and provide answers.

What is the VPN tunnel and how does it work?

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

It is best to configure the router as the VPN server, as this is generally always switched on. If you select a computer, you must make sure that it is always on to receive connection requests.

Which VPN for my corporate structure? 

UPC offers both full-mesh and also hub-and-spoke configurations for VPN. Full-mesh means that every location can communicate directly with any other location. Hub-and-spoke means that the flow of data always takes place via the hub, the main location of the data. In relation to your company, the decision depends on the company size as well as the structure (number of locations, decentralised locations etc.). Reliability, compatibility and security are also important components when selecting the right VPN for a company. A stable VPN is a key requirement for the secure exchange of data.

Security and reliability are the main precepts of VPN. With an encrypted VPN, you can connect national and international company locations within a standardised communication structure.