Remote Function Calls RFC is the standard SAP interface for communication between SAP systems. RFC calls are also widely used for SAP to non-SAP communication to call a (business) function in a connected SAP system. The underlying protocols used for SAP remote function calls are TCPIP and CPI-C.


The mathematical rule in the economics of Cyber Security Cheap Tom Brady Jersey , "new capabilities equals to new risks" definitely holds true. However, RFC technology is surely no capability which only recently received industry adoption!


New capabilities = New risks


In about every SAP security assessment we perform we are able to upgrade our authorizations using remote function calls Cheap Rob Gronkowski Jersey , how come? In many cases we even upgraded to God rights in the production system, while starting with basic privileges in a development or sandbox environment.


A known vulnerability = A major security risk
when not patched or mitigated


Remediation and mitigation may not exist until risks have been identified or worse Cheap Stephon Gilmore Jersey , disruption manifested.
Securing RFC connections is no rocket science, you will find plenty of elaborated SAP documentation on how to establish secure RFC communication.


SAP Non-SAP communication
as of SAP Kernel Release 720 Cheap Julian Edelman Jersey , the program "rfcexec" from the classic Remote Function Call Software Development Kit (SDK), used for many SAP to non-SAP integration scenarios Cheap Jake Bailey Jersey , is no longer delivered together with the kernel.
Meanwhile the SAP RFC documentation also clearly states: "Do not install the RFC Software Development Kit (RFC SDK) in your production system or on your application servers or front ends."

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