It handles incoming connections at the server when the srvcon_auth parameter is specified as CLIENT, SERVER, SERVER_ENCRYPT, DATA_ENCRYPT or DATA_ENCRYPT_CMP, or when srvcon_auth is not specified, and authentication is specified as CLIENT, SERVER, SERVER_ENCRYPT, DATA_ENCRYPT or DATA_ENCRYPT_CMP.
By default, the value is null and the userid-password plug-in library that is supplied with DB2® database is used. For non-root installations, if the DB2 userid and password plug-in library is used, the db2rfe command must be run before using your DB2 database product.