If DCAS is invoked externally, that is, by a program outside of Enterprise Server for .NET such as the Micro Focus Host Access Management and Security Server, you must define a DCAS listener channel for each region that provides DCAS services. You can do this from the Enterprise Server for .NET UI, or manually by editing the seelistener.exe.config file.
The DCAS listener channel definition must include client authorization configuration. We recommend that the client authorization configuration enables mutual authentication by requiring a client certificate, and restricts the CAs that are allowed to issue client certificates for the DCAS channel.