3062891 - SSSLERR_NO_SSL_REQUEST after activating the parameter system/secure_communication

• The parameter "system/secure_communication" was set to ON.
• The system does not work correctly after the change.
• The ASCS may present (but not limited to) a "running but not responding" status.
• The trace file of the Message Server or Enqueue Server has entries similar to the below:

[Thr 01] *** ERROR => NiISSLStartOnServerConn: SapSSLSessionStartNB failed (-25, SSSLERR_NO_SSL_REQUEST) [nixxi.cpp    11027]
[Thr 01] *** ERROR => MsSHandleSSLHandshake: NiSSLStartOnServerConn failed (NIESSL_NO_SSL3_REQUEST), connect from <hostname or IP address> [msxxserv.c   32046]

or

[Thr 01] *** ERROR => NiISSLStartOnServerConn: SapSSLSessionStartNB failed (-25, SSSLRC_NO_SSL_REQUEST) [nixxi.cpp    11043]
[Thr 01] *** ERROR => MsSHandleSSLHandshake: NiSSLStartOnServerConn failed (NIESSL_NO_SSL3_REQUEST), connect from <hostname or IP address> [msxxserv.c   32257]

• The local triggering of a batch event with the standalone kernel program sapevt fails. On dev_evt trace file we can see following information:

Now SSL prolog
<<- SapSSLSetTraceFile()==SAP_O_K
SSL not passed via command line
Now check, if SSL shall be used
SSL shall not be used

..

***LOG Q0I=> NiIRead: <MS hostname:port>: recv (104: Connection reset by peer) [/bas/753_REL/src/base/ni/nixxi.cpp 5434]
*** ERROR => NiIRead: SiRecv failed for hdl 1/sock 14
    (SI_ECONN_BROKEN/104; UD; ST; <MS hostname:port>) [nixxi.cpp    5434]
*** ERROR => MsINiRead: NiBufReceive failed (NIECONN_BROKEN) [msxxi.c      322]
*****************************************************************************
*
*  ERROR       The connection to the specified message server (<hostname>
*              / <service>) failed.
*              Please check the trace file of the message server
*              Please check hostname and/or service for typing errors
*              Please check whether a network filter has been activated
*              (parameter ms/acl_file_int)

• SAP NetWeaver 7.4 or newer

system/secure_communication, SSSLERR_NO_SSL_REQUEST, activating, setting, adding, implementing, parameter, ON, ASCS, running but not responding. , KBA , BC-CST-STS , Startup Service , BC-SEC-SSL , Secure Sockets Layer Protocol , BC-CST , Client/Server Technology , Problem