Check for DES encryption
If the result is positive, there is no need for further action. If the result is negative, please read the following instructions.
|Result positive||No outdated DES encryption supported|
|Result negativ||Obsolete DES encryption supported|
|Description||Your server is configured to support the encryption feature DES Cipher Suites, which is now considered insecure. This allows Man-in-the-middle attacks.|
|Background||The term Cipher Suite stands for a collection of cryptographic methods used (encryption of information). This collection includes the key exchange procedure, the signature procedure, the encryption and cryptographic hash functions. This combination of cryptographic individual components ensures the secure connection in communication between two parties, e.g. your mail program and a server. In the TLS protocol, the cipher suite (cryptographic procedure) determines which algorithms are to be used to establish a secure data connection and is responsible for the security of the connection.|
|Consequence||Attackers can use DES encryption to decrypt the communication between your server and your customer's mail-client, as DES does not offer sufficient security. This can be used to decrypt mail content and misuse them for criminal purposes.|
|Solution/Tips||If Obsolete DES encryption supported was reported, disable support for DES Cipher Suites in your web server software.|