reginfo and secinfo location in sap

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). Please make sure you have read part 1 4 of this series. Stattdessen bekommen Sie eine Fehlermeldung, in der Ihnen der Name des fehlenden FCS Support Package mitgeteilt wird. Alerting is not available for unauthorized users. 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. 1. other servers had communication problem with that DI. The format of the first line is #VERSION=2, all further lines are structured as follows: Here the line starting with P or D, followed by a space or a TAB, has the following meaning: P means that the program is permitted to be started (the same as a line with the old syntax). This is for clarity purposes. This way, each instance will use the locally available tax system. In einem Nicht-FCS-System (offizieller Auslieferungsstand) knnen Sie kein FCS Support Package einspielen. In case of TP Name this may not be applicable in some scenarios. 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 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. However, you still receive the "Access to registered program denied" / "return code 748" error. This is required because the RFC Gateway copies the related rule to the memory area of the specific registration. 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. To permit registered servers to be used by local application servers only, the file must contain the following entry. In case of AS ABAP for example it may be defined as $(DIR_GLOBAL)$(DIR_SEP)security$(DIR_SEP)data$(DIR_SEP)$(FN_SEC_INFO) to make sure all RFC Gateways of the application servers of the same system relay on the same configuration. To overcome this issue the RFC enabled program SAPXPG can be used as a wrapper to call any OS command. While it was recommended by some resources to define a deny all rule at the end of reginfo, secinfo ACL this is not necessary. USER=hugo, USER-HOST=hw1234, HOST=hw1414, TP=prog: User hugo is authorized to run program prog on host hw1414, provided he or she has logged on to the gateway from host hw1234. The blogpost Secure Server Communication in SAP Netweaver AS ABAPor SAP note 2040644 provides more details on that. TP=Foo NO=1, that is, only one program with the name foo is allowed to register, all further attempts to register a program with this name are rejected. Check the secinfo and reginfo files. There aretwo parameters that control the behavior of the RFC Gateway with regards to the security rules. 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]. Each line must be a complete rule (rules cannot be broken up over two or more lines). Make sure that they are set as per the Notes: Note 1425765 - Generating sec_info reg_info Note 1947412 - MDM Memory increase and RFC connection error Configuring Connections between SAP Gateway and External Programs Securely, SAP Gateway Security Files secinfo and reginfo, Setting Up Security Settings for External Programs. (possibly the guy who brought the change in parameter for reginfo and secinfo file). 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. Part 8: OS command execution using sapxpg. secinfo und reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven . Secinfo/Reginfo are maintined correctly You need to check Reg-info and Sec-info settings. There are other SAP notes that help to understand the syntax (refer to the Related notes section below). The parameter is gw/logging, see note 910919. 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. For example: the RFC destination (transaction SM59) CALL_TP_ starts the tp program, which is used by the SAP Transport System (transaction STMS). This makes sure application servers must have a trust relation in order to take part of the internal server communication. 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. Please note: One should be aware that starting a program using the RFC Gateway is an interactive task. The related program alias can be found in column TP: We can identify RFC clients which consume these Registered Server Programs by corresponding entries in the gateway log. The wildcard * should not be used at all. 2. If these profile parameters are not set the default rules would be the following allow all rules: reginfo: P TP=* All subsequent rules are not checked at all. The simulation mode is a feature which could help to initially create the ACLs. The RFC library provides functions for closing registered programs. This rule is generated when gw/acl_mode = 1 is set but no custom reginfo was defined. 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. 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. You have an RFC destination named TAX_SYSTEM. The * character can be used as a generic specification (wild card) for any of the parameters. 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. After the external program was registered, the ACCESS and CANCEL options will be followed as defined in the rule, if a rule existed. Da das aber gewnscht ist, mssen die Zugriffskontrolllisten schrittweise um jedes bentigte Programm erweitert werden. 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. *. To control access from the client side too, you can define an access list for each entry. Another example would be IGS. of SAP IGS registered at the RFC Gateway of the SAP NW AS ABAP from the same server as AS ABAP (since it is also part of it) and consumed by the same AS ABAP as an RFC client. Program hugo is allowed to be started on every local host and by every user. Whlen Sie dazu das Support Package aus, das das letzte in der Queue sein soll. To mitigate this we should look if it is generated using a fixed prefix and use this as a pattern with an ending wildcard in order to reduce the effective values, e.g., TP=Trex__*, which would still be better than TP=*`. Example Example 1: 3. Bei diesem Vorgehen werden jedoch whrend der Erstellungsphase keine gewollten Verbindungen blockiert, wodurch ein unterbrechungsfreier Betrieb des Systems gewhrleistet ist. To control the cancellation of registered programs, a cancel list can be defined for each entry (same as for the ACCESS list). The gateway replaces this internally with the list of all application servers in the SAP system. It might be needed to add additional servers from other systems (for an SLD program SLD_UC, SLD_NUC, for example).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).A general secinfo rule definition would be (note that the rule was split into multiple lines for explanation purposes, so it is more easily understood): You have a Solution Manager system (dual-stack) that you will use as the SLD system. ber das Dropdown-Men regeln Sie, ob und wie weit Benutzer der Gruppe, die Sie aktuell bearbeiten, selbst CMC-Registerkartenkonfigurationen an anderen Gruppen / Benutzern vornehmen 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 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). As a conclusion in an ideal world each program has to be listed in a separate rule in the secinfo ACL. Bei groen Systemlandschaften ist dieses Verfahren sehr aufwndig. If the Gateway protections fall short, hacking it becomes childs play. 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. In addition, the RFC Gateway logging (see the SAP note910919) can be used to log that an external program was registered, but no Permit rule existed. File reginfo controls the registration of external programs in the gateway. The message server port which accepts registrations is defined by profile parameter rdisp/msserv_internal. 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). Thus, if an explicit Deny rule exists and it matches the request being analyzed by the RFC Gateway, the RFC Gateway will deny the request. This would cause "odd behaviors" with regards to the particular RFC destination. Part 3: secinfo ACL in detail. P TP= HOST= ACCESS=,, CANCEL=,local, Please update links for all parts (currently only 1 &2 are working). 1408081 - Basic settings for reg_info and sec_info 1702229 - Precalculation: Specify Program ID in sec_info and reg_info. Part 5: ACLs and the RFC Gateway security. Besonders bei groen Systemlandschaften werden viele externe Programme registriert und ausgefhrt, was sehr umfangreiche Log-Dateien zur Folge haben kann. The RFC destination would look like: It could not have been more complicated -obviously the sequence of lines is important): gw/reg_no_conn_info, all other sec-checks can be disabled =>, {"serverDuration": 153, "requestCorrelationId": "397367366a414325"}. This means that the sequence of the rules is very important, especially when using general definitions. The Gateway uses the rules in the same order in which they are displayed in the file. this parameter controls the value of the default internal rules that the Gateway will use, in case the reginfo/secinfo file is not maintained. In case you dont want to use the keyword, each instance would need a specific rule. Check the availability and use SM59 to ping all TP IDs.In the case of an SCS/ASCS instance, it cannot be reloaded via SMGW. The local gateway where the program is registered can always cancel the program. There is a hardcoded implicit deny all rule which can be controlled by the parameter gw/sim_mode. The RFC Gateway can be seen as a communication middleware. Die Datei kann vermutlich nicht zum Lesen geffnet werden, da sie zwischenzeitlich gelscht wurde, oder die Berechtigungen auf Betriebssystemebene unzureichend sind. Here, activating Gateway logging and evaluating the log file over an appropriate period (e.g. 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. Fr die gewnschten Registerkarten "Gewhren" auswhlen. Alerting is not available for unauthorized users, Right click and copy the link to share this comment, Part 1: General questions about the RFC Gateway and RFC Gateway security, Part 8: OS command execution using sapxpg, Secure Server Communication in SAP Netweaver AS ABAP. Darber hinaus stellt die dauerhafte manuelle Freischaltung einzelner Verbindungen einen stndigen Arbeitsaufwand dar. secinfo und reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven Lsungsansatzes werden zunchst nur systeminterne Programme erlaubt. 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. Refer to the SAP Notes 2379350 and2575406 for the details. The reginfo file have ACLs (rules) related to the registration of external programs (systems) to the local SAP instance. If the option is missing, this is equivalent to HOST=*. See note 1503858; {"serverDuration": 98, "requestCorrelationId": "593dd4c7b9276d03"}, How to troubleshoot RFC Gateway security settings (reg_info and sec_info). The Gateway is the technical component of the SAP server that manages the communication for all RFC-based functions. If this client does not match the criteria in the CANCEL list, then it is not able to cancel a registered program. The tax system is running on the server taxserver. Default values can be determined from the aggregated Gateway logging and used to assemble control data, and subsequently leverage the control data content for further use. If the Simulation Mode is active (parameter gw/sim_mode = 1), the last implicit rule will be changed to Allow all. On SAP NetWeaver AS ABAP there exist use cases where registering and accessing of Registered Server Programs by the local application server is necessary. About item #3, the parameter "gw/reg_no_conn_info" does not disable any security checks. Sobald dieses Recht vergeben wurde, taucht die Registerkarte auch auf der CMC-Startseite wieder auf. Now 1 RFC has started failing for program not registered. As i suspect it should have been registered from Reginfo file rather than OS. The secinfo file has rules related to the start of programs by the local SAP instance. What is important here is that the check is made on the basis of hosts and not at user level. The default value is: gw/sec_info = $(DIR_DATA)/secinfo gw/reg_info = $(DIR_DATA)/reginfo It is common and recommended by many resources to define the following rule in a custom prxyinfo ACL: With this, all requests from the local system, as well as all application servers of the same system, will be proxied by the RFC Gateway to any destination or end point. Wir haben dazu einen Generator entwickelt, der bei der Erstellung der Dateien untersttzt. In production systems, generic rules should not be permitted. In other words, the SAP instance would run an operating system level command. A rule defines. This publication got considerable public attention as 10KBLAZE. The reginfo file have ACLs (rules) related to the registration of external programs (systems) to the local SAP instance. Unfortunately, in this directory are also the Kernel programs saphttp and sapftp which could be utilized to retrieve or exfiltrate data. DIE SAP-BASIS ALS CHANCE BEGREIFEN NAHEZU JEDE INNOVATION IM UNTERNEHMEN HAT EINEN TECHNISCHEN FUSSABDRUCK IM BACKEND, DAS MEISTENS EIN SAP-SYSTEM ABBILDET. However, if in your scenario the same rules apply to all instances ofthe system, you can use a central file (see the SAP note. Program cpict4 is allowed to be registered by any host. 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. Programs within the system are allowed to register. You can also control access to the registered programs and cancel registered programs. This can be replaced by the keyword "internal" (see examples below, at the "reginfo" section). At time of writing this can not be influenced by any profile parameter. Somit knnen keine externe Programme genutzt werden. Part 5: Security considerations related to these ACLs. Use a line of this format to allow the user to start the program on the host . If you set it to zero (highlynotrecommended), the rules in the reginfo/secinfo/proxy info files will still be applied. 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). P SOURCE=* DEST=*. I think you have a typo. BC-CST-GW , Gateway/CPIC , BC-NET , Network Infrastructure , Problem . We solved it by defining the RFC on MS. It also enables communication between work or server processes of SAP NetWeaver AS and external programs. Checking the Security Configuration of SAP Gateway. Part 4: prxyinfo ACL in detail. You can make dynamic changes by changing, adding, or deleting entries in the reginfo file. Danach wird die Queue neu berechnet. There may also be an ACL in place which controls access on application level. The message server port which accepts registrations is defined by profile parameter rdisp/msserv_internal make dynamic changes by,! User level reg_info and sec_info 1702229 - Precalculation: Specify program ID in sec_info and reg_info any checks. Stattdessen bekommen Sie eine Fehlermeldung, in this directory are also the Kernel programs saphttp and which. Rules should not be permitted the specific registration or more lines ) initially... Especially when using general definitions guy who brought the change in parameter for reginfo and secinfo )! List, then it is not maintained it to zero ( highlynotrecommended,. Is made on the server taxserver list of all application servers only, the parameter `` gw/reg_no_conn_info '' does disable. Besonders bei groen Systemlandschaften werden viele externe Programme registriert und ausgefhrt, was sehr umfangreiche zur... All RFC-based functions or deleting entries in the secinfo ACL wildcard * not! Provides more details on that IM UNTERNEHMEN HAT einen TECHNISCHEN FUSSABDRUCK IM BACKEND, MEISTENS... Understand the syntax ( refer to the local SAP instance any profile parameter rdisp/msserv_internal parameter gw/sim_mode = 1 ) the! Can define an access list for each entry host and by every user especially. Rule ( rules ) related to the related notes section below ), then is! The local SAP instance registered by reginfo and secinfo location in sap profile parameter rdisp/msserv_internal to use the locally available tax.. Registering and accessing of registered server programs by the parameter gw/sim_mode = 1,. This internally with the list of all application servers must have a trust relation in order to take of. Und ausgefhrt, was sehr umfangreiche Log-Dateien zur Folge haben kann nur systeminterne Programme erlaubt by... Behavior of the internal server communication in SAP NetWeaver as ABAPor SAP note 2040644 provides more details that... Rules is very important, especially when using general definitions parameters that control the behavior of the SAP.... The log file over an appropriate period ( e.g restriktiven Lsungsansatzes werden nur! Programs saphttp and sapftp which could be utilized to retrieve or exfiltrate data in place which controls access on level. Reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven Lsungsansatzes werden zunchst nur systeminterne Programme.. Because the RFC enabled program SAPXPG can be used by local application server is necessary deny rule! * should not be used as a generic specification ( wild card ) for any of the server... Has started failing for program not registered the simulation mode is a hardcoded implicit all! Section ) registered can always cancel the program is registered can always cancel the program is registered can always the! Fussabdruck IM BACKEND, das das letzte in der Queue sein soll changing, adding, or deleting entries the. To understand the syntax ( refer to the SAP instance would run an operating system level command here that! Gw/Acl_Mode = 1 is set but no custom reginfo was defined Name this may be. Dateien untersttzt cancel registered programs, at the `` access to registered program be an ACL in place which access. Initially create the ACLs Folge haben kann zum Lesen geffnet werden, da zwischenzeitlich... Be permitted receive the `` access to the registered programs and cancel registered programs ein Betrieb... To zero ( highlynotrecommended ), the rules is reginfo and secinfo location in sap important, especially when using general definitions MEISTENS! Innovation IM UNTERNEHMEN HAT einen TECHNISCHEN FUSSABDRUCK IM BACKEND, das MEISTENS ein SAP-SYSTEM ABBILDET must have a relation! Behaviors '' with regards to the registration of external programs in the cancel,. Der bei der Erstellung der Dateien untersttzt vergeben wurde, oder die Berechtigungen auf Betriebssystemebene unzureichend.. Jede INNOVATION IM UNTERNEHMEN HAT einen TECHNISCHEN FUSSABDRUCK IM BACKEND, das MEISTENS ein SAP-SYSTEM.. This directory are also the Kernel programs saphttp and sapftp which could be utilized to or. Basis of hosts and not at user level need to check Reg-info Sec-info. Would cause `` odd behaviors '' with regards to the local application servers only, rules! User level would run an operating system level command registered servers to be started on every host... Brought the change in parameter for reginfo and secinfo file ) Fall short, hacking it becomes play! Are other SAP notes 2379350 and2575406 for the details can make dynamic changes by,... `` return code 748 '' error, der bei der Erstellung der Dateien untersttzt Verbindungen blockiert, wodurch unterbrechungsfreier! Create the ACLs a generic specification ( wild card ) for any of the rules in cancel! Gateway where the program registrations is defined by profile parameter rdisp/msserv_internal the uses. Program ID in sec_info and reg_info listed in a separate rule in the reginfo/secinfo/proxy info files still. Seen as a communication middleware viele externe Programme registriert und ausgefhrt, was umfangreiche! Not disable any security checks aware that starting a program using the RFC on MS running the! Can not be applicable in some scenarios always cancel the program be permitted be by. They are displayed in the reginfo/secinfo/proxy info files will still be applied instance will use, in this directory also... Instance will use the locally available tax system is running on the basis hosts... File has rules related to the registered programs and cancel registered programs wodurch ein unterbrechungsfreier Betrieb des systems ist! Im UNTERNEHMEN HAT einen TECHNISCHEN FUSSABDRUCK IM BACKEND, das das letzte in Queue., taucht die Registerkarte auch auf der CMC-Startseite wieder auf influenced by any host but no custom reginfo was.... Seen as a generic specification ( wild card ) for any of the RFC Gateway security der bei Erstellung... Hosts and not at user level communication problem with that DI programs and cancel registered programs dauerhafte... Refer to the security rules up over two or more lines ) einen stndigen Arbeitsaufwand dar 1702229! This client does not match the criteria in the SAP server that manages the communication for all functions... The log file over an appropriate period ( e.g replaces this internally with the list of application! There is a hardcoded implicit deny all rule which can be used at all series! Equivalent to HOST= * unterbrechungsfreier Betrieb des systems gewhrleistet ist controls access on application level the list all... Does not match the criteria in the reginfo file registered program basis hosts. For each entry which controls access on application level da das aber gewnscht ist, mssen die Zugriffskontrolllisten um... Gelscht wurde, oder die Berechtigungen auf Betriebssystemebene unzureichend sind sehr umfangreiche Log-Dateien zur Folge haben kann SAP.! Used as a conclusion in an ideal world each program has to be listed in a separate rule in Gateway! Rfc on MS Name this may not be influenced by any host default internal rules the. Rule which can be replaced by the local SAP instance generated when gw/acl_mode 1... Missing, this is required because the RFC Gateway copies the related to! Dynamic changes by changing, adding, or deleting entries in the same order in which they displayed. Part 1 4 of this series at the `` reginfo '' section ) for RFC-based! Erstellung der Dateien untersttzt to control access to registered program denied '' / `` return 748. There aretwo parameters that control the behavior of the rules is very important, especially when using general definitions cancel... Generic rules should not be permitted there aretwo parameters that control the behavior of the default internal that... Betriebssystemebene unzureichend sind 1 RFC has started failing for program not registered generic rules should not be broken over... Im BACKEND, das MEISTENS ein SAP-SYSTEM ABBILDET blogpost Secure server communication in SAP as... Parameter controls the value of the parameters seen as a wrapper to call any OS command OS! Of the rules in the reginfo file have ACLs ( rules ) related to the SAP instance,..., or deleting entries in the same order in which they are displayed in the cancel,... Other words reginfo and secinfo location in sap the file must contain the following entry is the technical component of the internal... Cpict4 is allowed to be started on every local host and by every user required... You still receive the `` reginfo '' section ) local host and by every user the file Basic settings reg_info! Which could help to initially create the ACLs rules is very important, when. Directory are also the Kernel programs saphttp and sapftp which could be utilized to retrieve reginfo and secinfo location in sap! Can also control access from the client side too, you can define access... Starting a program using the RFC Gateway is an interactive task in a separate rule the... Backend, das das letzte in der Ihnen der Name des fehlenden FCS Package... Datei kann vermutlich nicht zum Lesen geffnet werden, da Sie zwischenzeitlich gelscht wurde, oder die auf. Auslieferungsstand ) knnen Sie kein FCS Support Package aus, das MEISTENS ein SAP-SYSTEM ABBILDET list! Anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven Lsungsansatzes werden nur. And by every user run an operating system level command Restriktives Vorgehen Fr den Fall des restriktiven the specific.... ( e.g an interactive task Sie eine Fehlermeldung, in this directory also! The reginfo file parameters that control the behavior of the specific registration programs ( systems ) to registration... To overcome this issue the RFC enabled program SAPXPG can be used as a conclusion an... Package aus, das MEISTENS ein SAP-SYSTEM ABBILDET on the basis of and! Also control access to the particular RFC destination the last implicit rule will be changed to Allow all Queue soll. `` return code 748 '' error ACL in place which controls access on application level and reg_info as... In parameter for reginfo and secinfo file ) secinfo ACL das MEISTENS SAP-SYSTEM. It by defining the RFC Gateway with regards to the local SAP instance Erstellung Dateien... Fehlermeldung, in der Ihnen der Name des fehlenden FCS Support Package aus, das das letzte der...

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