What does IPsec mean?

IPsec stands for Internet Protocol Security. This is an extension of the Internet Protocol (IP) to include encryption and authentication mechanisms.

More security in data transmission.

With IPsec, the Internet protocol is extended by additional security mechanisms. The aim behind this is secure communication via the potentially insecure IP network, e.g. the Internet. IP packets are cryptographically secured before they are transported over public insecure networks.

If two computers connect via the internet - or in the case of the Internet of Things, computers or systems and end devices - third parties may be able to view this connection and extract private information or smuggle in harmful files. IPsec was developed to prevent this access by unauthorised third parties. They should not be able to see data or access it in any way.

For this reason, the connections are encrypted via security protocols. All transmitted data is virtually mixed and can only be read correctly again via a specific security key. If this security key is not available on the other side, it cannot process the data further. Since security keys are very complex, it is very difficult to guess or calculate them. And since only the sender and receiver have the key, the connection between them is secure. Encryption is possible via various protocols and usually works automatically with all VPN clients. Along with SSL, IPSec is one of two roughly differentiated protocols.

IPsec was developed by the Internet Engineering Task Force (IETF) as an integral part of IPv6. Because the Internet protocol of version 4 originally had no security mechanisms, IPsec was subsequently specified for IPv4.