Communication Paths that Support
SNC
In this section, we provide an overview of the communication paths you can protect with SNC (see the figure below).
SAP System Communication Paths
The following system components are involved in the SAP system communication schema:
· SAP GUI for Windows
· Application Server for ABAP (AS ABAP)
· Application Server for Java (AS Java)
· External RFC programs
· External CPIC programs
· SAPlpd
· SAProuter
The communication paths that result are shown in the table below.
SAP System Communication Paths
From → To |
Using |
See |
SAP GUI for Windows → AS ABAP |
Dialog / RFC |
|
External program → AS ABAP |
RFC |
|
External program → AS ABAP |
CPIC |
|
AS ABAP → AS ABAP |
RFC |
|
AS ABAP → AS ABAP |
CPIC |
|
AS ABAP → External program (running on an application server) |
RFC |
RFC: TCP/IP Connection – Start an External Program on an AS ABAP |
AS ABAP → External program (running on an explicit host) |
RFC |
RFC: TCP/IP Connection – Start an External Program on an Explicit Host |
AS ABAP → External program (started over SAP GUI) |
RFC |
RFC: TCP/IP Connection – Start an External Program over SAP GUI |
AS ABAP → External program (registered program) |
RFC |
|
AS ABAP → External program (started over a gateway) |
CPIC |
|
AS ABAP → External program (registered program) |
CPIC |
|
AS ABAP → AS Java |
RFC |
|
AS Java → AS ABAP |
RFC |
|
AS ABAP → SAPlpd |
|
|
SAProuter → SAProuter |
|
For information about how to establish SNC protection for these connections, see Configuring the Communication Partners to Use SNC.
Before proceeding with the configuration, see the General Comments Pertaining to the SNC Configuration and our Recommendations.