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SSL Policy Firepower

SSL Decryption

Encrypted traffic over the world wide web has increased significantly considering the boom of digitization. SSL Policy mainly in any firewall describes how your encrypted traffic is handled. 

 SSL Policy in firepower  has two main objectives

  • HTTP Decryption
  • Selective blocking of encrypted traffic .
FTD supports two main SSL/TLS encryption decryption method 
  • Known Key 
            - Used for traffic coming to your server/application
            - Server's private key and certificate is uploaded to FTD.
  • Resign
           - Used for outgoing traffic from your endpoint usually.
           - Server private key is not required.

Defining PKI Objects

Object >  Object Management > PKI

  • Internal CA   
          -  Internal CA's certificate
          -  Needed for "Decrypt Resign"
          -  Used for outgoing traffic source NAT


  • Internal Certificate      
          -  Your server certificate & keys
          -  Needed for "Decrypt Known Key" rules
          -  Used for incoming traffic destination NAT



         

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