netcup Certificates rely on TLS 1.2 using Elliptic-curve Diffie–Hellman (ECDH) as the key exchange algorithm with a 128 session encryption key size (bits), SHA2 as the hash function with a digest size of 256, RSA as the authentication mechanism and AES for the session cipher.

When using netcup services such as netcup Domain or netcup Webhosting, you have, by default, the option to use a free certificate from Let's Encrypt, a non-profit Certification Authority that provides free TLS certificates to the public. netcup certificates are for customers with specific or heightened needs that go beyond what Let's Encrypt offers. If you are uncertain whether your requirements warrant a netcup certificate, please contact our support, so that we can help you with any questions you may have.

Using certificates has a wide range of advantages, as they provide you and your visitors with additional security and assurance that the information transferred between your server and their browser has not been altered in any way. Beyond that, every modern internet browser will display a warning message when trying to access a domain that does not have a properly issued certificate, making them indispensable for modern internet usage.

If you have any further questions, please contact our support.

Yes, follow this guide if you are using netcup web hosting.