OpenEdge uses Transport Layer Security (TLS) to secure network connections. TLS provides data privacy and reliability over network connections using elements of Public-Key Infrastructure (PKI). It does so by allowing a client to authenticate a server in order to establish a connection between them and to negotiate an encryption algorithm and cryptographic keys before the application protocol transmits or receives its first byte of data.

Note: All Progress Application Server (PAS) for OpenEdge components have TLS 1.2, 1.3 installed on them. The default is set to TLS 1.3. If a client is configured with either TLS 1.2 or TLS 1.3 then Progress Application Server (PAS) for OpenEdge establishes a connection using the default TLS 1.3. If the client is configured with only TLS 1.2, then Progress Application Server (PAS) for OpenEdge switches to TLS 1.2 and establishes a client connection.

The following topics provide an overview of TLS including its standards, features, and requirements, and describes the elements of PKI that it employs. They also reference how OpenEdge supports TLS and define terms used in the OpenEdge documentation set.