Java Open Clients securely connect to ABL application servers using HTTPS (Hypertext Transfer Protocol Secure) connections. This protocol encrypts data sent between clients and application servers. To encrypt the data, the clients and servers must share a certificate. TLS (Transport Layer Security) is configured on the application server by the System Administrator. The System Administrator supplies the necessary certificate files used to verify that the server is a trusted applications server. For more information on how to setup server security, see Use TLS in PAS for OpenEdge. Client developers must then import the server certificates into their client keystore.