High Performance, High Capacity SSL Offload
Internet users today are much more alert about web security than just a few years ago. People are all too aware of potential malicious activities that can compromise their personal information or worse. TLS/SSL is used to ensure the communication between a client and the application is encrypted, so even if the transaction is intercepted, the content can't be read by a third party.
The encryption strength is determined in part by the key length. The minimum key length that is supported by Certificate Authorities and web browsers changed from 1024 to 2048-bit. Many environments such as banking and financial institutions operate with higher security standards and will require stronger encryption and therefore longer key lengths such as 4096-bit, to guarantee higher degrees of data security.