For Windows traditional mode clients to be able to connect to a UNIX database server without using ESD, you must verify that the rexec daemon is enabled in the inetd configuration file. You must verify this fact on each UNIX database server or engine computer that is accessed by Windows clients. The location of this configuration file can vary, depending on the platform on which you are running.
If you are using web mode or a secure engine connection with ESD, it does not matter whether the rexec daemon is enabled.
ESD is applicable only if you are using it for Rational® Change.