Generally speaking, we recommend SpyOFF’s Ultra Secure mode. Here the extremely reliable OpenVPN protocol is used, which supports the AES encryption method with block lengths of 128 and 256 bits on all popular devices, such as Android, iOS, Linux, Mac OS X and Windows. Using digital certificates, OpenVPN authenticates data on both sides by means of a user name and password. When comparing the protocols, OpenVPN not only offers very good security, but also very high speed.
L2TP is the all-round alternative to our protocols and is available for iOS, Linux, Mac OS X and Windows. L2TP supports the AES block cipher with key length of 128 bits, which is also combined with the Point-to-Point encryption from Microsoft. This combination is also considered highly secure and also functions extremely reliably. L2TP generally delivers a very good balance, as it achieves a middle ground with a good level of security and acceptable speed. However, the connection doesn’t quite achieve the speed of PPTP. In any case, L2TP is recommended as an alternative to OpenVPN.
With PPTP you should then really only use SpyOFF if you want to bypass country blocks when streaming and are reliant on achieving the best possible speed. The setup of PPTP may be very simple, but this encryption does have security flaws. Via PPTP only the Point-to-Point encryption from Microsoft is supported, which on the one hand ensures a very fast connection, but on the other hand causes problems if your router does not support Generic Routing Encapsulation technology.
Via our Expert mode, you can independently configure your VPN protocol. Here protocols such as L2TP are available to you, which is recommended if a balanced performance is required. Furthermore, PPTP delivers a very high speed, the benefits of which are most evident when streaming. In addition to a fast speed, OpenVPN also gives you the option to avail yourself of the highest level of security, which is why this SpyOFF configuration is recommended.
The Advanced Encryption Standard (AES) is currently the most used and the most secure encryption process. In 2001, AES replaced the DES encryption standard. Originally AES, with a block length of 256 bits, was the first encryption algorithm approved in the USA for government documents with the highest security rating. The reasons in favour of this encryption procedure are, among others, the security, the performance and its flexibility.
The underlying working involves substitutions, permutations and linear transformations. These take place on 16-byte data blocks and are repeated several times, although in each round an individual key is generated, which is incorporated into the calculation. By changing a single bit in the data block or key, a completely different cipher block is generated, which represents a considerable advantage over classic encryptions. In contrast to DES, with a key length of just 56 bits, AES uses key lengths of 128, 192 or 256 bits. To date, no procedure is known by which an attack against AES would be possible, which is why the Advanced Encryption Standard is preferred by banks, governments and high-security systems around the world.