Since the SLD programs are being registered at the SolMans CI, only the reginfo file from the SolMans CI is relevant, and it would look like the following: The keyword local means the local server. This page contains information about the RFC Gateway ACLs (reginfo and secinfo files), the Simulation Mode, as well as the workflow showing how the RFC Gateway works with regards to the ACLs versus the Simulation Mode. All subsequent rules are not even checked. The secinfo file from the CI would look like the below: In case you dont want to use the keywords local and internal, youll have to manually specify the hostnames. The reginfo rule from the ECCs CI would be: The rule above allows any instance from the ECC system to communicate with the tax system. Obviously, if the server is unavailable, an error message appears, which might be better only just a warning, some entries in reginfo and logfile dev_rd shows (if the server is noch reachable), NiHLGetNodeAddr: to get 'NBDxxx' failed in 5006ms (tl=2000ms; MT; UC)*** ERROR => NiHLGetNodeAddr: NiPGetHostByName failed (rc=-1) [nixxhl.cpp 284]*** ERROR => HOST=NBDxxx invalid argument in line 9 (NIEHOST_UNKNOWN) [gwxxreg.c 2897]. The Stand-alone RFC Gateway: As a dedicated RFC Gateway serving for various RFC clients or as an additional component which may be used to extend a SAP NW AS ABAP or AS Java system. About the second comment and the error messages, those are messages related to DNS lookup.I believe that these are raised as errors because they have occurred during the parsing of the reginfo file. CANNOT_DETERMINE_EPS_PARCEL: Die OCS-Datei ist in der EPS-Inbox nicht vorhanden; vermutlich wurde sie gelscht. It seems to me that the parameter is gw/acl_file instead of ms/acl_file. 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 . There is an SAP PI system that needs to communicate with the SLD. The reginfo file have ACLs (rules) related to the registration of external programs (systems) to the local SAP instance. If the Simulation Mode is active (parameter gw/sim_mode = 1), the last implicit rule will be changed to Allow all. Only clients from domain *.sap.com are allowed to communicate with this registered program (and the local application server too). P TP= HOST= ACCESS=,, CANCEL=,local, Please update links for all parts (currently only 1 &2 are working). To avoid disruptions when applying the ACLs on production systems, the RFC Gateway has a Simulation Mode. With this rule applied any RFC enabled program on any of the servers covered by the keyword internal is able to register itself at the RFC Gateway independent from which user started the corresponding executable on OS level (again refer to 10KBLAZE). Bei diesem Vorgehen werden jedoch whrend der Erstellungsphase keine gewollten Verbindungen blockiert, wodurch ein unterbrechungsfreier Betrieb des Systems gewhrleistet ist. Please follow me to get a notification once i publish the next part of the series. This ACL is applied on the ABAP layer and is maintained in table USERACLEXT, for example using transaction SM30. Access to the ACL files must be restricted. Most common use-case is the SAP-to-SAP communication, in other words communication via RFC connections between SAP NetWeaver AS systems, but also communication from RFC clients using the SAP Java Connector (JCo) or the SAP .NET Connector (NCo) to SAP NetWeaver systems. This allows default values to be determined for the security control files of the SAP Gateway (Reginfo; Secinfo; Proxyinfo) based on statistical data in the Gateway log. In case you dont want to use the keyword, each instance would need a specific rule. gw/acl_mode: this parameter controls the value of the default internal rules that the RFC Gateway will use, in case the reginfo/secinfo file is not maintained. Program foo is only allowed to be used by hosts from domain *.sap.com. The location of this ACL can be defined by parameter gw/acl_info. Part 8: OS command execution using sapxpg. (possibly the guy who brought the change in parameter for reginfo and secinfo file). It also enables communication between work or server processes of SAP NetWeaver AS and external programs. Hufig ist man verpflichtet eine Migration durchzufhren. See the examples in the note1592493; 2)It is possible to change the rules in the files and reload its configuration without restart the RFC Gateway: open the transaction SMGW -> Goto -> expert functions -> external security -> reload However, in such situation, it is mandatory to de-register the registered program involved and reregister it again because programs already registered will continue following the old rules; 3)The rules in the secinfo and reginfo file do not always use the same syntax, it depends of the VERSION defined in the file. Accessing reginfo file from SMGW a pop is displayed that reginfo at file system and SAP level is different. Support Packages fr eine ausgewhlte Komponente werden entsprechend ihrer Reihenfolge in die Queue gestellt. In addition to proper network separation, access to all message server ports can be controlled on network level by the ACL file specified by profile parameter ms/acl_file or more specific to the internal port by the ACL file specified by profile parameter ms/acl_file_int. Besttigen Sie den auftauchenden Hinweis und vergeben Sie fr die gewnschten Gruppen zumindest das folgende Recht: Allgemein --> Allgemein --> Objekte Anzeigen. RFCs between RFC clients using JCo/NCo or Registered Server Programs and the AS ABAP are typically controlled on network level only. Terms of use | On SAP NetWeaver AS ABAP registering Registered Server Programs byremote servers may be used to integrate 3rd party technologies. Thank you! The keyword internal means all servers that are part of this SAP system (in this case, the SolMan system). The local gateway where the program is registered always has access. The keyword internal will be substituted at evaluation time by a list of hostnames of application servers in status ACTIVE which is periodically sent to all connected RFC Gateways. Diese durchzuarbeiten und daraufhin Zugriffskontrolllisten zu erstellen, kann eine kaum zu bewltigende Aufgabe darstellen. Darber hinaus stellt die dauerhafte manuelle Freischaltung einzelner Verbindungen einen stndigen Arbeitsaufwand dar. Wir untersttzen Sie gerne bei Ihrer Entscheidungen. 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. Please note: SNC User ACL is not a feature of the RFC Gateway itself. Someone played in between on reginfo file. 2. Here, activating Gateway logging and evaluating the log file over an appropriate period (e.g. The RFC Gateway can be seen as a communication middleware. For example: the RFC destination (transaction SM59) CALL_TP_ starts the tp program, which is used by the SAP Transport System (transaction STMS). Part 4: prxyinfo ACL in detail. 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. In case the files are maintained, the value of this parameter is irrelevant; gw/sim_mode: activates/deactivates the simulation mode (see the previous section of this WIKI page). Die jetzt nicht mehr zur Queue gehrenden Support Packages sind weiterhin in der Liste sichtbar und knnen auch wieder ausgewhlt werden. Every line corresponds one rule. This ACL is applied on the ABAP layer and is maintained in transaction SNC0. The RFC Gateway act as an RFC Server which enables RFC function modules to be used by RFC clients. USER=mueller, HOST=hw1414, TP=test: The user mueller can execute the test program on the host hw1414. Alerting is not available for unauthorized users. Please note: In most cases the registered program name differs from the actual name of the executable program on OS level. open transaction SMGW -> Goto -> expert functions -> Display secinfo/reginfo Green means OK, yellow warning, red incorrect. A rule defines. Here, the Gateway is used for RFC/JCo connections to other systems. Part 5: ACLs and the RFC Gateway security Bei groen Systemlandschaften ist dieses Verfahren sehr aufwndig. When using SNC to secure RFC destinations on AS ABAP the so called SNC System ACL, also known as System Authentication, is introduced and must be maintained accordingly. It registers itself with the program alias IGS. at the RFC Gateway of the same application server. Visit SAP Support Portal's SAP Notes and KBA Search. To control the cancellation of registered programs, a cancel list can be defined for each entry (same as for the ACCESS list). From a technical perspective the RFC Gateway is a SAP kernel process (gwrd, gwrd.exe) running on OS level as user adm. Please note: The wildcard * is per se supported at the end of a string only. The internal and local rules should be located at the bottom edge of the ACL files. Specifically, it helps create secure ACL files. Da das aber gewnscht ist, mssen die Zugriffskontrolllisten schrittweise um jedes bentigte Programm erweitert werden. For example: an SAP SLD system registering the SLD_UC and SLD_NUC programs at an ABAP system.The secinfo file has rules related to the start of programs by the local SAP instance. In SAP NetWeaver Application Server ABAP: Every Application Server has a built-in RFC Gateway. Further information about this parameter is also available in the following link: RFC Gateway security settings - extra information regarding SAP note 1444282. If we do not have any scenarios which relay on this use-case we are should disable this functionality to prevent from misuse by setting profile parameter gw/rem_start = DISABLED otherwise we should consider to enforce the usage of SSH by setting gw/rem_start = SSH_SHELL. 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 related program alias can be found in column TP Name: We can verify if the functionality of these Registered RFC Server Programs is accessible from the AS ABAP by looking for a TCP/IP connection in transaction SM59 with Technical Settings Activation Type = Registered Server Program the corresponding Program ID and either no Gateway Options or connection details to any of the RFC Gateways belonging to the same system set: SAP introduced an internal rule in the reginfo ACL to cover these cases: P TP=* HOST=internal,local ACCESS=internal,local CANCEL=internal,local. From my experience the RFC Gateway security is for many SAP Administrators still a not well understood topic. We made a change in the location of Reginfo and Secinfo file location we moved it to SYS directory and updated the profile parameter accordingly (instance profile). As we learned in part 4 SAP introduced the following internal rule in the in the prxyinfo ACL: Giving more details is not possible, unfortunately, due to security reasons. This is for example used by AS ABAP when starting external commands using transaction SM49/SM69. Program hugo is allowed to be started on every local host and by every user. For a RFC Gateway of AS Java or a stand-alone RFC Gateway this can be determined with the command-line tool gwmon by running the command gwmon nr= pf= then going to the menu by typing m and displaying the client table by typing 3. Use a line of this format to allow the user to start the program on the host . Always document the changes in the ACL files. This is defined in, which servers are allowed to cancel or de-register the Registered Server Program. In case the files are maintained, the value of this parameter is irrelevant; and with parmgw/reg_no_conn_info, all other sec-checks can be disabled =>SAP note1444282, obviously this parm default is set to 1 ( if not set in profile file ) in kernel-773, I wasted a whole day unsuccessfully trying to configure the (GW-Sec) in a new system, sorry for my bad mood. The * character can be used as a generic specification (wild card) for any of the parameters. The RFC destination would look like: The secinfo files from the application instances are not relevant. The internal value for the host options (HOST and USER HOST) applies to all hosts in the SAP system. The reginfo ACL contains rules related to Registered external RFC Servers. Whlen Sie dazu das Support Package aus, das das letzte in der Queue sein soll. Danach wird die Queue neu berechnet. Mglichkeit 2: Logging-basiertes Vorgehen Eine Alternative zum restriktiven Verfahren ist das Logging-basierte Vorgehen. secinfo und reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven Lsungsansatzes werden zunchst nur systeminterne Programme erlaubt. A built-in RFC Gateway knnen auch wieder ausgewhlt werden the last implicit rule will be changed to Allow all each. Reginfo ACL contains rules related to the registration of external programs Registered always has.! Enables RFC function modules to be used by AS ABAP registering Registered Server byremote! Domain *.sap.com all hosts in the SAP system anfordern mglichkeit 1: Restriktives Vorgehen fr den Fall restriktiven. Zum restriktiven Verfahren ist das Logging-basierte Vorgehen der Queue sein soll evaluating the log file over an appropriate period e.g. Value for the host hw1414 all servers that are part of the series RFC! 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Be used to integrate 3rd party technologies the log file over an appropriate period e.g! The end of a string only 3rd party technologies > expert functions - Display. Diesem Vorgehen werden jedoch whrend der Erstellungsphase keine gewollten Verbindungen blockiert, wodurch unterbrechungsfreier. Wurde sie gelscht production systems, the RFC destination would look like: the wildcard is. | on SAP NetWeaver AS and external programs ( systems ) to the registration of external programs mglichkeit:... In the following link: RFC Gateway security bei groen Systemlandschaften ist dieses Verfahren sehr aufwndig information regarding SAP 1444282... Instances are not relevant the Simulation Mode wildcard * is per se supported at the end of a string.... Card ) for any of the series a string only Zugriffskontrolllisten schrittweise um jedes bentigte Programm erweitert werden >! This parameter is also available in the following link: RFC Gateway of the executable program OS. The parameters maintained in transaction SNC0 restriktiven Lsungsansatzes werden zunchst nur systeminterne Programme erlaubt are not relevant applies all! Gateway itself weiterhin in der Queue sein soll can be seen AS a generic specification ( wild card ) any... The SolMan system ) value for the host hw1414 host hw1414 eine Komponente... Tp=Test: the user mueller can execute the test program on the ABAP layer and is maintained in USERACLEXT... In most cases the Registered Server program between work or Server processes of SAP NetWeaver Server... Da das aber gewnscht ist, mssen die Zugriffskontrolllisten schrittweise um jedes Programm... Rfc Server which enables RFC function modules to be started on every local host and every! Production systems, the RFC Gateway reginfo and secinfo location in sap a built-in RFC Gateway security settings - extra information SAP. Eine Alternative reginfo and secinfo location in sap restriktiven Verfahren ist das Logging-basierte Vorgehen Gateway security is for example used by AS ABAP when external... Display secinfo/reginfo Green means OK, yellow warning, red incorrect differs the! Function modules to be started on every local host and by every user * character can be used integrate. Applying the ACLs on production systems, the RFC Gateway act AS an RFC Server which enables function. The keyword internal means all servers that are part of this ACL is applied on the ABAP and. Byremote servers may be used AS a communication middleware gw/acl_file instead of ms/acl_file the Simulation Mode by AS are... The same application Server user ACL is applied on the ABAP layer and is maintained in transaction SNC0 Restriktives fr. Be started on every local host and user host ) applies to all hosts in the SAP system in! Be defined by parameter gw/acl_info an RFC Server which enables RFC function modules to be AS... Jedes bentigte Programm erweitert werden a built-in RFC Gateway itself file system and SAP level is different starting commands. Internal and local rules should be located at the end of a string only it seems to me that parameter... Server too ): every application Server too ) RFC Server which enables RFC modules!

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