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When you want the BIG-IP system to process application traffic over SSL, you can configure the system to perform the SSL handshake that destination servers normally perform. This ability for the BIG-IP system to offload SSL processing from a destination server is an important feature of the BIG-IP system.
The most common way to configure the BIG-IP system is to create a Client SSL profile, which makes it possible for the BIG-IP system to decrypt client requests before sending them on to a server, and encrypt server responses before sending them back to the client.
Within a Client SSL profile specifically, you can specify multiple certificate/key pairs, one per key type. This enables the system to accept all types of cipher suites that a client might support as part of creating a secure connection. The system then decrypts the client data, manipulates any headers or payload according to the way that you configured the Client SSL profile, and by default, sends the request in clear text to the target server for processing.
For those sites that require enhanced security on their internal network, you can configure a Server SSL profile. With a Server SSL profile, the BIG-IP system re-encrypts the request before sending it to the destination server. When the server returns an encrypted response, the BIG-IP system decrypts and then re-encrypts the response, before sending the response back to the client.
For more information on configuring SSL and Online Certificate Status Protocol (OCSP) profiles, see the guide BIG-IP System: SSL Administration at http://support.f5.com.