All subsequent rules are not checked at all. Only the first matching rule is used (similarly to how a network firewall behaves). The Gateway uses the rules in the same order in which they are displayed in the file.Each line must be a complete rule (rules cannot be broken up over two or more lines).The first line of the reginfo/secinfo files must be “# VERSION = 2”.Always document the changes in the ACL files.For all Gateways, a sec_info-ACL, a prxy_info-ACL and a reg_info-ACL file must be available.Here, the Gateway is used for RFC/JCo connections to other systems. The default configuration of an ASCS has no Gateway. In a pure Java system, one Gateway is sufficient for the whole system because the instances do not use RFC to communicate. Even if the system is installed with an ASCS instance (ABAP Central Services comprising the message server and the standalone enqueue server), a Gateway can still be configured on the ASCS instance. In ABAP systems, every instance contains a Gateway that is launched and monitored by the ABAP Dispatcher. The network service that, in turn, manages the RFC communication is provided by the RFC Gateway. The Gateway is the technical component of the SAP server that manages the communication for all RFC-based functions. Should a cyberattack occur, this will give the perpetrators direct access to your sensitive SAP systems. Despite this, system interfaces are often left out when securing IT systems. If the Gateway protections fall short, hacking it becomes child’s play. As such, it is an attractive target for hacker attacks – and should receive corresponding protections. The Gateway is a central communication component of an SAP system.
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