Ausfhrliche Erluterungen zur Funktionsweise und zur Einstellung des Kollektors finden Sie in der SAP-Onlinehilfe sowie in den SAP-Hinweisen, die in Anhang E zusammengestellt sind. From my experience the RFC Gateway security is for many SAP Administrators still a not well understood topic. 2.20) is taken into account only if every comma-separated entry can be resolved into an IP address. Besonders bei groen Systemlandschaften werden viele externe Programme registriert und ausgefhrt, was sehr umfangreiche Log-Dateien zur Folge haben kann. Somit knnen keine externe Programme genutzt werden. The Solution Manager (SolMan) system has only one instance, running at the host sapsmci. this parameter controls the value of the default internal rules that the Gateway will use, in case the reginfo/secinfo file is not maintained. As we learned in part 4 SAP introduced the following internal rule in the in the prxyinfo ACL: Access attempts coming from a different domain will be rejected. Bei groen Systemlandschaften ist dieses Verfahren sehr aufwndig. 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. 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). You can define the file path using profile parameters gw/sec_infoand gw/reg_info. Part 8: OS command execution using sapxpg. RFC had issue in getting registered on DI. The RFC Gateway hands over the request from the RFC client to the dispatcher which assigns it to a work process (AS ABAP) or to a server process (AS Java). 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. Its location is defined by parameter gw/sec_info. The secinfo file has rules related to the start of programs by the local SAP instance. 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. Accessing reginfo file from SMGW a pop is displayed that reginfo at file system and SAP level is different. In this case the Gateway Options must point to exactly this RFC Gateway host. Die erstellten Log-Dateien knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden. Part 3: secinfo ACL in detail Remember the AS ABAP or AS Java is just another RFC client to the RFC Gateway. How can I quickly migrate SAP custom code to S/4HANA? The related program alias also known as TP Name is used to register a program at the RFC Gateway. The default value is: gw/sec_info = $(DIR_DATA)/secinfo gw/reg_info = $(DIR_DATA)/reginfo Check the secinfo and reginfo files. Examples of valid addresses are: Number (NO=): Number between 0 and 65535. (possibly the guy who brought the change in parameter for reginfo and secinfo file). Part 8: OS command execution using sapxpg. Someone played in between on reginfo file. 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. To control access from the client side too, you can define an access list for each entry. Please assist ASAP. 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 default configuration of an ASCS has no Gateway. Please pay special attention to this phase! 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. Somit knnen keine externe Programme genutzt werden. You can also control access to the registered programs and cancel registered programs. The RFC Gateway act as an RFC Server which enables RFC function modules to be used by RFC clients. The reginfo file is holding rules controlling which remote servers (based on their hostname/ip-address) are allowed to either register, access or cancel which 'Registered Server Programs' (based on their program alias (also known as 'TP name')). Program cpict4 is allowed to be registered if it arrives from the host with address 10.18.210.140. Aus diesem Grund knnen Sie als ein Benutzer der Gruppe auch keine Registerkarten sehen. From my experience the RFC Gateway security is for many SAP Administrators still a not well understood topic. A combination of these mitigations should be considered in general. (possibly the guy who brought the change in parameter for reginfo and secinfo file). The prxyinfo file is holding rules controlling which source systems (based on their hostname/ip-address) are allowed to talk to which destination systems (based on their hostname/ip-address) over the current RFC Gateway. We should pretend as if we would maintain the ACLs of a stand-alone RFC Gateway. Da das aber gewnscht ist, mssen die Zugriffskontrolllisten schrittweise um jedes bentigte Programm erweitert werden. 2. P means that the program is permitted to be registered (the same as a line with the old syntax). Part 7: Secure communication D prevents this program from being started. secinfo und reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven . If there is a scenario where proxying is inevitable this should be covered then by a specific rule in the prxyinfo ACL of the proxying RFC Gateway, e.g.,: P SOURCE= DEST=internal,local. Someone played in between on reginfo file. 3. P TP= HOST= ACCESS=,, CANCEL=,local, Please update links for all parts (currently only 1 &2 are working). All programs started by hosts within the SAP system can be started on all hosts in the system. This is for clarity purposes. Spielen Sie nun die in der Queue stehenden Support Packages ein [Seite 20]. The RFC Gateway does not perform any additional security checks. While typically remote servers start the to-be-registered program on the OS level by themselves, there may be cases where starting a program is used to register a Registered Server Program at the RFC Gateway. This is defined in, which servers are allowed to cancel or de-register the Registered Server Program. Whlen Sie nun die Anwendungen / Registerkarten aus, auf die die Gruppe Zugriff erhalten soll (mit STRG knnen Sie mehrere markieren) und whlen Sie den Button Gewhren. Every attribute should be maintained as specific as possible. It is common to define this rule also in a custom reginfo file as the last rule. On SAP NetWeaver AS ABAP registering Registered Server Programs byremote servers may be used to integrate 3rd party technologies. Zu jedem Lauf des Programms RSCOLL00 werden Protokolle geschrieben, anhand derer Sie mgliche Fehler feststellen knnen. With this blogpost series i try to give a comprehensive explanation of the RFC Gateway Security: Part 1: General questions about the RFC Gateway and RFC Gateway security Part 2: reginfo ACL in detail. After implementing this note, modify the Gateway security files "reg_info" and "sec_info" with TP=BIPREC* (Refer notes 614971 and 1069911). Then the file can be immediately activated by reloading the security files. 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. Auch hier ist jedoch ein sehr groer Arbeitsaufwand vorhanden. Observation: in emergency situations, follow these steps in order to disable the RFC Gateway security. Since proxying to circumvent network level restrictions is a bad practice or even very dangerous if unnoticed the following rule should be defined as last rule in a custom prxyinfo: The wildcard * should be avoided wherever possible. This is defined in, which RFC clients are allowed to talk to the Registered Server Program. The default rules of reginfo and secinfo ACL (as mentioned in part 2 and part 3) are enabled if either profile parameter gw/acl_mode = 1 is set or if gw/reg_no_conn_info includes the value 16 in its bit mask, and if no custom ACLs are defined. There are two different syntax versions that you can use (not together). Part 6: RFC Gateway Logging. The default rule in prxyinfo ACL (as mentioned in part 4) is enabled if no custom ACL is defined. Datenbankschicht: In der Datenbank, welche auf einem Datenbankserver liegt, werden alle Daten eines Unternehmens gesichert. If USER-HOST is not specifed, the value * is accepted. As such, it is an attractive target for hacker attacks and should receive corresponding protections. There is a hardcoded implicit deny all rule which can be controlled by the parameter gw/sim_mode. If these profile parameters are not set the default rules would be the following allow all rules: reginfo: P TP=* Depending on the settings of the reginfo ACL a malicious user could also misuse this permissions to start a program which registers itself on the local RFC Gateway, e.g.,: Even if we learned starting a program using the RFC Gateway is an interactive task and the call will timeout if the program itself is not RFC enabled, for eample: the program still will be started and will be running on the OS level after this error was shown, and furthermore it could successfully register itself at the local RFC Gateway: There are also other scenarios imaginable in which no previous access along with critical permission in SAP would be necessary to execute commands via the RFC Gateway. 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. Whlen Sie dazu das Support Package aus, das das letzte in der Queue sein soll. 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 . Diese Daten knnen aus Datentabellen, Anwendungen oder Systemsteuertabellen bestehen. Program cpict4 is allowed to be registered by any host. The RFC Gateway does not perform any additional security checks. Please note: The wildcard * is per se supported at the end of a string only. In case of AS ABAP for example it may be defined as $(DIR_GLOBAL)$(DIR_SEP)security$(DIR_SEP)data$(DIR_SEP)$(FN_PRXY_INFO) to make sure all RFC Gateways of the application servers of the same system relay on the same configuration. Part 4: prxyinfo ACL in detail. Please note: SNC User ACL is not a feature of the RFC Gateway itself. Host Name (HOST=, ACCESS= and/or CANCEL=): The wildcard character * stands for any host name, *.sap.com for a domain, sapprod for host sapprod. In other words the same host running the ABAP system is also running the SAP IGS, for example the integrated IGS (as part of SAP NW AS ABAP) may be started on the application servers host during the start procedure of the ABAP system. 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. three months) is necessary to ensure the most precise data possible for the . SAP Gateway Security Files secinfo and reginfo, Configuring Connections between Gateway and External Programs Securely, Gateway security settings - extra information regarding SAP note 1444282, Additional Access Control Lists (Gateway), Reloading the reginfo - secinfo at a Standalone Gateway, SAP note1689663: GW: Simulation mode for reg_info and sec_info, SAP note1444282: gw/reg_no_conn_info settings, SAP note1408081: Basic settings for reg_info and sec_info, SAP note1425765: Generating sec_info reg_info, SAP note1069911: GW: Changes to the ACL list of the gateway (reginfo), SAP note614971: GW: Changes to the ACL list of the gateway (secinfo), SAP note910919: Setting up Gateway logging, SAP KBA1850230: GW: "Registration of tp not allowed", SAP KBA2075799: ERROR: Error (Msg EGW 748 not found), SAP KBA2145145: User is not authorized to start an external program, SAP KBA 2605523: [WEBINAR] Gateway Security Features, SAP Note 2379350: Support keyword internal for standalone gateway, SAP Note 2575406: GW: keyword internal on gwrd 749, SAP Note 2375682: GW: keyword internal lacks localhost as of 740. ooohhh my god, (It could not have been more complicated -obviously the sequence of lines is important): "# This must always be the last rule on the file see SAP note 1408081" + next line content, is not included as comment within the default-delivered reginfo file or secinfo file (after installation) -, this would save a lot ofwasted life time, gw/acl_mode: ( looks like to enable/disable the complete gw-security config, but ). 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. The * character can be used as a generic specification (wild card) for any of the parameters. USER=mueller, HOST=hw1414, TP=test: The user mueller can execute the test program on the host hw1414. 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. The following syntax is valid for the secinfo file. Danach wird die Queue neu berechnet. Its functions are then used by the ABAP system on the same host. As we learnt before the reginfo and secinfo are defining rules for very different use-cases, so they are not related. Each line must be a complete rule (rules cannot be broken up over two or more lines). There are other SAP notes that help to understand the syntax (refer to the Related notes section below). Now 1 RFC has started failing for program not registered. As a conclusion in an ideal world each program has to be listed in a separate rule in the secinfo ACL. Diese durchzuarbeiten und daraufhin Zugriffskontrolllisten zu erstellen, kann eine kaum zu bewltigende Aufgabe darstellen. When editing these ACLs we always have to think from the perspective of each RFC Gateway to which the ACLs are applied to. To display the security files, use the gateway monitor in AS ABAP (transaction SMGW). 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 is the index value shown in the pop-up), Gateway, Security, length, line, rule, limit, abap , KBA , BC-CST-GW , Gateway/CPIC , Problem. Part 3: secinfo ACL in detail. Part 2: reginfo ACL in detail. 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. Part 6: RFC Gateway Logging. Hierfr mssen vorerst alle Verbindungen erlaubt werden, indem die secinfo Datei den Inhalt USER=* HOST=* TP=* und die reginfo Datei den Inhalt TP=* enthalten. This would cause "odd behaviors" with regards to the particular RFC destination. It seems to me that the parameter is gw/acl_file instead of ms/acl_file. Viele Unternehmen kmpfen mit der Einfhrung und Benutzung von secinfo und reginfo Dateien fr die Absicherung von SAP RFC Gateways. CANCEL is usually a list with all SAP servers from this system (or the keyword "internal"), and also the same servers as in HOSTS (as you must allow the program to de-register itself). Hufig ist man verpflichtet eine Migration durchzufhren. Limiting access to this port would be one mitigation. Once you have completed the change, you can reload the files without having to restart the gateway. 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. 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. The RFC Gateway allows external RFC Server programs (also known as Registered Server or Registered Server Program) to register to itself and allows RFC clients to consume the functions offered by these programs. It registers itself with the program alias IGS. at the RFC Gateway of the same application server. The RFC Gateway can be used to proxy requests to other RFC Gateways. 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). Once you have completed the change, you can define the file path using profile parameters gw/reg_info. You can also control access from the perspective of each RFC Gateway of the RFC Gateway act as an Server... File path using profile parameters gw/sec_infoand gw/reg_info Number between 0 and 65535 possible for the jedes Programm! 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