The KeyStore tab in the Network Security panel displays the public key certificates that the Delphix Engine uses for its identity in HTTPS and DSP (Delphix Session Protocol) communication. For a selected service, the tab will show the full certificate chain starting from the end-entity certificate and ending with the root CA.
There are two methods of replacing a certificate. The key difference between the two is whether Delphix or the user is providing the key pair (public and private key). For more information see Configuring Network Settings.