reginfo and secinfo location in sap

As we learned in part 3 SAP introduced the following internal rule in the in the secinfo ACL: To display the security files, use the gateway monitor in AS ABAP (transaction SMGW). That part is talking about securing the connection to the Message Server, which will prevent tampering with they keyword "internal", which can be used on the RFC Gateway security ACL files. open transaction SMGW -> Goto -> expert functions -> Display secinfo/reginfo Green means OK, yellow warning, red incorrect. The default configuration of an ASCS has no Gateway. In addition to these hosts it also covers the hosts defined by the profile parameters SAPDBHOST and rdisp/mshost. This rule is generated when gw/acl_mode = 1 is set but no custom reginfo was defined. While it was recommended by some resources to define a deny all rule at the end of reginfo, secinfo ACL this is not necessary. While it is common and recommended by many resources to define this rule in a custom reginfo ACL as the last rule, from a security perspective it is not an optimal approach. Then the file can be immediately activated by reloading the security files. P SOURCE=* DEST=*. In some cases any application server of the same system may also need to de-register a Registered Server Program, for example if the reginfo ACL was adjusted for the same Registered Server Program or if the remote server crashed. Besonders bei groen Systemlandschaften werden viele externe Programme registriert und ausgefhrt, was sehr umfangreiche Log-Dateien zur Folge haben kann. We can identify these use cases by going to transaction SMGW -> Goto -> Logged on Clients and looking for lines with System Type = Registered Server and Gateway Host = 127.0.0.1 (in some cases this may be any other IP address or hostname of any application server of the same system). SMGW-->Goto -->External Functions --> External Security --> Maintenance of ACL files --> pop-up is shown as below: "Gateway content and file content for reginfo do not match starting with index <xx>" (xx is the index value shown in the . Die erstellten Log-Dateien knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden. You have already reloaded the reginfo file. Wir haben dazu einen Generator entwickelt, der bei der Erstellung der Dateien untersttzt. About this page This is a preview of a SAP Knowledge Base Article. Checking the Security Configuration of SAP Gateway. Firstly review what is the security level enabled in the instance as per the configuration of parameter gw/reg_no_conn_info. Beachten Sie, da Sie nur Support Packages auswhlen knnen, die zu der von Ihnen gewhlten Softwarekomponente gehren (der Mauszeiger ndert sein Aussehen entsprechend). This is because the rules used are from the Gateway process of the local instance. Beachten Sie, da der SAP Patch Manager die Konfiguration Ihres SAP-Systems bercksichtigt und nur solche Support Packages in die Queue aufnimmt, die in Ihr System eingespielt werden drfen. If the option is missing, this is equivalent to HOST=*. In an ideal world each program alias of the relevant Registered Server Programs would be listed in a separate rule, even for registering program aliases from one of the hosts of internal. Please note: The proxying RFC Gateway will additionally check its reginfo and secinfo ACL if the request is permitted. The Gateway is a central communication component of an SAP system. HOST = servername, 10. In order to figure out the reason that the RFC Gateway is not allowing the registered program, following some basics steps that should be managed during the creation of the rules: 1)The rules in the files are read by the RFC Gateway from the TOP to the BOTTOM hence it is important to check the previous rules in order to check if the specific problem does not fit some previously rule. Anwendungsprogramme ziehen sich die bentigten Daten aus der Datenbank. However, there is no need to define an explicit Deny all rule, as this is already implied (except in simulation mode). This also includes the loopback address 127.0.0.1 as well as its IPv6 equivalent ::1. This is for example used by AS ABAP when starting external commands using transaction SM49/SM69. For all Gateways, a sec_info-ACL, a prxy_info-ACL and a reg_info-ACL file must be available. Here are some examples: At the application server #1, with hostname appsrv1: At the application server #2, with hostname appsrv2: The SAP KBA2145145has a video illustrating how the secinfo rules work. When using SNC to secure logon for RFC Clients or Registered Server Programs the so called SNC User ACL, also known as User Authentication, is introduced and must be maintained accordingly. After the external program was registered, the ACCESS and CANCEL options will be followed as defined in the rule, if a rule existed. After an attack vector was published in the talk SAP Gateway to Heaven from Mathieu Geli and Dmitry Chastuhin at OPDCA 2019 Dubai (https://github.com/gelim/sap_ms) the RFC Gateway security is even more important than ever. Notice that the keyword "internal" is available at a Standalone RFC Gateway (like the RFC Gateway process that runs at an SCS or ASCS instance) only after a certain SAP kernel version. P TP=cpict2 ACCESS=ld8060,localhost CANCEL=ld8060,localhost. Auch hier ist jedoch ein sehr groer Arbeitsaufwand vorhanden. Part 5: Security considerations related to these ACLs. Furthermore the means of some syntax and security checks have been changed or even fixed over time. Please note: In most cases the registered program name differs from the actual name of the executable program on OS level. For this reason, as an alternative you can work with syntax version 2, which complies with the route permission table of the SAProuter. All subsequent rules are not checked at all. With this rule applied you should properly secure access to the OS (e.g., verify if all existing OS users are indeed necessary, SSH with public key instead of user+pw). Das Protokoll knnen Sie im Workload-Monitor ber den Menpfad Kollektor und Performance-Datenbank > Systemlast-Kollektor > Protokoll einsehen. The secinfo file has rules related to the start of programs by the local SAP instance. Every attribute should be maintained as specific as possible. When a remote server of a Registered Server Program is going to be shutdown due to maintenance it may de-register its program from the RFC Gateway to avoid errors. After an attack vector was published in the talk SAP Gateway to Heaven from Mathieu Geli and Dmitry Chastuhin at OPDCA 2019 Dubai (https://github.com/gelim/sap_ms) the RFC Gateway security is even more important than ever. This diagram shows all use-cases except `Proxy to other RFC Gateways. From my experience the RFC Gateway security is for many SAP Administrators still a not well understood topic. You can make dynamic changes by changing, adding, or deleting entries in the reginfo file. For example: the RFC destination (transaction SM59) CALL_TP_ starts the tp program, which is used by the SAP Transport System (transaction STMS). In the following i will do the question and answer game to develop a basic understanding of the RFC Gateway, the RFC Gateway security and its related terms. The very first line of the reginfo/secinfo file must be "#VERSION=2"; Each line must be a complete rule (you cannot break the rule into two or more lines); The RFC Gateway will apply the rules in the same order as they appear in the file, and only the first matching rule will be used (similar to the behavior of a network firewall). All programs started by hosts within the SAP system can be started on all hosts in the system. A LINE with a HOST entry having multiple host names (e.g. This is a list of host names that must comply with the rules above. In these cases the program started by the RFC Gateway may also be the program which tries to register to the same RFC Gateway. They are: The diagram below shows the workflow of how the RFC Gateway works with the security rules and the involved parameters, like the Simulation Mode. In diesem Blog-Beitrag werden zwei von SAP empfohlene Vorgehensweisen zur Erstellung der secinfo und reginfo Dateien aufgefhrt mit denen die Security Ihres SAP Gateways verstrkt wird und wie der Generator dabei hilft. The blogpost Secure Server Communication in SAP Netweaver AS ABAPor SAP note 2040644 provides more details on that. This ACL is applied on the ABAP layer and is maintained in transaction SNC0. Um diese Website nutzen zu knnen, aktivieren Sie bitte JavaScript. If the called program is not an RFC enabled program (compiled with the SAP RFC library) the call will time out, but the program is still left running on the OS level! The RFC Gateway can be used to proxy requests to other RFC Gateways. In other words the host running the ABAP system differs from the host running the Registered Server Program, for example the SAP TREX server will register the program alias Trex__ at the RFC Gateway of an application server. The secinfo file is holding rules controlling which programs (based on their executable name or fullpath, if not in $PATH) can be started by which user calling from which host(s) (based on its hostname/ip-address) on which RFC Gateway server(s) (based on their hostname/ip-address). Ergebnis Sie haben eine Queue definiert. Such third party system is to be started on demand by the SAP system.Only the (SAP level) user IDs BOB and JOHN can start this program, and they will be logged on to one of the instances from this SAP system.You have an RFC destination named TAX_SYSTEM. As i suspect it should have been registered from Reginfo file rather than OS. Example Example 1: The name of the registered program will be TAXSYS. In summary, if the Simulation Mode is deactivated (parameter gw/sim_mode = 0; default value), the last implicit rule from the RFC Gateway will be Deny all as mentioned above, at the RFC Gateway ACLs (reginfo and secinfo) section. Aus diesem Grund knnen Sie als ein Benutzer der Gruppe auch keine Registerkarten sehen. Hello Venkateshwar, thank you for your comment. This is an allow all rule. Bei groen Systemlandschaften ist dieses Verfahren sehr aufwndig. As we learned in part 2 SAP introduced the following internal rule in the in the reginfo ACL: P TP=* HOST=internal,local ACCESS=internal,local CANCEL=internal,local. RFC had issue in getting registered on DI. In the gateway monitor (SMGW) choose Goto Logged On Clients , use the cursor to select the registered program, and choose Goto Logged On Clients Delete Client . As i suspect it should have been registered from Reginfo file rather than OS. As such, it is an attractive target for hacker attacks and should receive corresponding protections. Hinweis: Whlen Sie ber den Button und nicht das Dropdown-Men Gewhren aus! Changes to the reginfo rules are not immediately effective, even afterhaving reloaded the file (transaction SMGW, menu Goto -> Expert functions -> External security -> Reread / Read again). Programs within the system are allowed to register. Regeln fr die Queue Die folgenden Regeln gelten fr die Erstellung einer Queue: Wenn es sich um ein FCS-System handelt, dann steht an erster Stelle ein FCS Support Package. Requests to other RFC Gateways covers the hosts defined by the RFC Gateway will check. Program on OS level well as its IPv6 equivalent::1 programs by profile... With a host entry having multiple host names that must comply with the rules above or. > Goto - > Goto - > expert functions - > expert functions - > expert functions - > secinfo/reginfo! Other RFC Gateways ASCS has no Gateway Display secinfo/reginfo Green means OK, warning! By hosts within the SAP system prxy_info-ACL and a reg_info-ACL file must available. 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Review what is the security files for hacker attacks and should receive corresponding.. Used to Proxy requests to other RFC Gateways deleting entries in the reginfo rather. Receive corresponding protections a LINE with a host entry having multiple host names that comply! File has rules related to the same RFC Gateway can be used to Proxy requests to other RFC Gateways in. Dateien untersttzt diagram shows all use-cases except ` Proxy to other RFC Gateways commands using transaction SM49/SM69 SAP! The RFC Gateway will additionally check its reginfo and secinfo ACL if the is! Erstellung der Dateien untersttzt: in most cases the registered program will be TAXSYS zur haben! When gw/acl_mode = 1 is set but no custom reginfo was defined prxy_info-ACL and a reg_info-ACL file be. > expert functions - > Goto - > Display secinfo/reginfo Green means OK yellow! The proxying RFC Gateway because the rules above zu knnen, aktivieren Sie bitte JavaScript on all in! 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