Part 3: secinfo ACL in detail. Whlen Sie dazu das Support Package aus, das das letzte in der Queue sein soll. For all Gateways, a sec_info-ACL, a prxy_info-ACL and a reg_info-ACL file must be available. As a result many SAP systems lack for example of proper defined ACLs to prevent malicious use. Someone played in between on reginfo file. Host Name (HOST=, ACCESS= and/or CANCEL=): The wildcard character * stands for any host name, *.sap.com for a domain, sapprod for host sapprod. However, if in your scenario the same rules apply to all instances ofthe system, you can use a central file (see the SAP note. 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. An example could be the integration of a TAX software. Its location is defined by parameter gw/sec_info. In einer Dialogbox knnen Sie nun definieren, welche Aktionen aufgezeichnet werden sollen. About item #1, I will forward your suggestion to Development Support. This also includes the loopback address 127.0.0.1 as well as its IPv6 equivalent ::1. You must keep precisely to the syntax of the files, which is described below. You can define the file path using profile parameters gw/sec_infoand gw/reg_info. Successful and rejected registrations, and calls from registered programs can be ascertained using Gateway Logging with indicator S. Any error lines are put in the trace file dev_rd, and are not read in. 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. You have a non-SAP tax system that needs to be integrated with SAP. Observation: in emergency situations, follow these steps in order to disable the RFC Gateway security. The Gateway is the technical component of the SAP server that manages the communication for all RFC-based functions. 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. If the domain name system (DNS) servername cannot be resolved into an IP address, the whole line is discarded and results in a denial. Refer to the SAP Notes 2379350 and2575406 for the details. Hierfr mssen vorerst alle Verbindungen erlaubt werden, indem die secinfo Datei den Inhalt USER=* HOST=* TP=* und die reginfo Datei den Inhalt TP=* enthalten. In production systems, generic rules should not be permitted. 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). In addition, the existing rules on the reginfo/secinfo file will be applied, even on Simulation Mode. This diagram shows all use-cases except `Proxy to other RFC Gateways. This means that the sequence of the rules is very important, especially when using general definitions. In the slides of the talk SAP Gateway to Heaven for example a scenario is outlined in which a SAProuter installed on the same server as the RFC Gateway could be utilized to proxy a connection to local. 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 5: ACLs and the RFC Gateway security You can define the file path using profile parameters gw/sec_infoand gw/reg_info. 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. In other words, the SAP instance would run an operating system level command. To overcome this issue the RFC enabled program SAPXPG can be used as a wrapper to call any OS command. Configuring Connections between SAP Gateway and External Programs Securely, SAP Gateway Security Files secinfo and reginfo, Setting Up Security Settings for External Programs. Darber hinaus stellt die dauerhafte manuelle Freischaltung einzelner Verbindungen einen stndigen Arbeitsaufwand dar. 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. if the server is available again, this as error declared message is obsolete. In addition to these hosts it also covers the hosts defined by the profile parameters SAPDBHOST and rdisp/mshost. We solved it by defining the RFC on MS. The network service that, in turn, manages the RFC communication is provided by the RFC Gateway. Please note: One should be aware that starting a program using the RFC Gateway is an interactive task. 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. Part 2: reginfo ACL in detail. Each line must be a complete rule (rules cannot be broken up over two or more lines). For this reason, as an alternative you can work with syntax version 2, which complies with the route permission table of the SAProuter. 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. To assign the new settings to the registered programs too (if they have been changed at all), the servers must first be deregistered and then registered again. How can I quickly migrate SAP custom code to S/4HANA? The other parts are not finished, yet. The SAP documentation in the following link explain how to create the file rules: RFC Gateway Security Files secinfo and reginfo. The individual options can have the following values: TP Name (TP=): Maximum 64 characters, blank spaces not allowed. 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. Only the first matching rule is used (similarly to how a network firewall behaves). Die zu der berechneten Queue gehrenden Support Packages sind grn unterlegt. Sobald dieses Recht vergeben wurde, taucht die Registerkarte auch auf der CMC-Startseite wieder auf. Zu jedem Lauf des Programms RSCOLL00 werden Protokolle geschrieben, anhand derer Sie mgliche Fehler feststellen knnen. If no access list is specified, the program can be used from any client. There may also be an ACL in place which controls access on application level. Auch hier ist jedoch ein sehr groer Arbeitsaufwand vorhanden. If the Gateway Options are not specified the AS will try to connect to the RFC Gateway running on the same host. Part 2: reginfo ACL in detail Please make sure you have read part 1 4 of this series. A rule defines. Giving more details is not possible, unfortunately, due to security reasons. secinfo und reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven . Despite this, system interfaces are often left out when securing IT systems. Bei groen Systemlandschaften ist dieses Verfahren sehr aufwndig. Most of the cases this is the troublemaker (!) Registrations beginning with foo and not f or fo are allowed, All registrations beginning with foo but not f or fo are allowed (missing HOST rated as *), All registrations from domain *.sap.com are allowed. 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 Example Example 1: The reginfo ACL contains rules related to Registered external RFC Servers. Since programs are started by running the relevant executable there is no circumstance in which the TP Name is unknown. Its location is defined by parameter gw/reg_info. You have configured the SLD at the Java-stack of the SolMan system, using the RFC Gateway of the SolMans ABAP-stack. 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 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')). As i suspect it should have been registered from Reginfo file rather than OS. In SAP NetWeaver Application Server Java: The SCS instance has a built-in RFC Gateway. This order is not mandatory. Common examples are the program tp for transport management via STMS started on the RFC Gateway host of AS ABAP or the program gnetx.exe for the graphical screen painter started on the SAP GUI client host. Please assist ASAP. RFCs between two SAP NetWeaver AS ABAP systems are typically controlled on network level only. 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): 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. Accesscould be restricted on the application level by the ACL file specified by profile parameter ms/acl_info. 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). At time of writing this can not be influenced by any profile parameter. (possibly the guy who brought the change in parameter for reginfo and secinfo file). After implementing this note, modify the Gateway security files "reg_info" and "sec_info" with TP=BIPREC* (Refer notes 614971 and 1069911). File reginfocontrols the registration of external programs in the gateway. three months) is necessary to ensure the most precise data possible for the connections used. This parameter will allow you to reproduce the RFC Gateway access and see the TP and HOST that the access is using hence create the rules in the reginfo or secinfo file; 5)The rules defined in the reginfo or secinfo file can be reviewed in colored syntactic correctness. 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. Accessing reginfo file from SMGW a pop is displayed thatreginfo at file system and SAP level is different. As such, it is an attractive target for hacker attacks and should receive corresponding protections. A deny all rule would render the simulation mode switch useless, but may be considered to do so by intention. We can look for programs listed with Type = REGISTER_TP and field ADDR set to any IP address or hostname not belonging to any application server of the same system. 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. Dieses Verfahren ist zwar sehr restriktiv, was fr die Sicherheit spricht, hat jedoch den sehr groen Nachteil, dass in der Erstellungsphase immer Verbindungen blockiert werden, die eigentlich erwnscht sind. 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. Firstly review what is the security level enabled in the instance as per the configuration of parameter gw/reg_no_conn_info. A custom allow rule has to be maintained on the proxying RFC Gateway only. 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. Should a cyberattack occur, this will give the perpetrators direct access to your sensitive SAP systems. there are RED lines on secinfo or reginfo tabs, even if the rule syntax is correct. secinfo und reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven Lsungsansatzes werden zunchst nur systeminterne Programme erlaubt. Program hugo is allowed to be started on every local host and by every user. A LINE with a HOST entry having multiple host names (e.g. This would cause "odd behaviors" with regards to the particular RFC destination. Registering external programs by remote servers and accessing them from the local application server On SAP NetWeaver AS ABAP registering 'Registered Server Programs' by remote servers may be used to integrate 3rd party technologies. 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. Datenbankschicht: In der Datenbank, welche auf einem Datenbankserver liegt, werden alle Daten eines Unternehmens gesichert. The parameter is gw/logging, see note 910919. The notes1408081explain and provide with examples of reginfo and secinfo files. 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 2: reginfo ACL in detail. Copyright |
This could be defined in. Die erstellten Log-Dateien knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden. 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. Trademark. There aretwo parameters that control the behavior of the RFC Gateway with regards to the security rules. Viele Unternehmen kmpfen mit der Einfhrung und Benutzung von secinfo und reginfo Dateien fr die Absicherung von SAP RFC Gateways. Another example: you have a non-SAP tax system that will register a program at the CI of an SAP ECC system. Es gibt verschiedene Grnde wie zB die Gesetzliche Anforderungen oder Vorbereitungsmanahmen fr eine S/HANA Conversion. For example: an SAP SLD system registering the SLD_UC and SLD_NUC programs at an ABAP system. Stattdessen bekommen Sie eine Fehlermeldung, in der Ihnen der Name des fehlenden FCS Support Package mitgeteilt wird. 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). About this page This is a preview of a SAP Knowledge Base Article. Das von Ihnen gewhlte hchste Support Package der vorher ausgewhlten Softwarekomponente ist zustzlich mit einem grnen Haken markiert. Use a line of this format to allow the user to start the program on the host . The solution is to stop the SLD program, and start it again (in other words, de-register the program, and re-register it). (any helpful wiki is very welcome, many thanks toIsaias Freitas). We should pretend as if we would maintain the ACLs of a stand-alone RFC Gateway. Environment. Someone played in between on reginfo file. 1. other servers had communication problem with that DI. 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. You can also control access to the registered programs and cancel registered programs. Die erstellten Log-Dateien knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden. They also have a video (the same video on both KBAs) illustrating how the reginfo rules work. The default value is: gw/sec_info = $(DIR_DATA)/secinfo gw/reg_info = $(DIR_DATA)/reginfo In einem Nicht-FCS-System (offizieller Auslieferungsstand) knnen Sie kein FCS Support Package einspielen. Please pay special attention to this phase! This is required because the RFC Gateway copies the related rule to the memory area of the specific registration. Wechseln Sie dazu auf die gewnschte Registerkarte (im Beispiel ist das Universen), whlen Sie Verwalten --> Sicherheit auf oberster Ebene --> Alle Universen (je nach Registerkarte unterscheidet sich der letzte Punkt). Examples of valid addresses are: Number (NO=): Number between 0 and 65535. 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. Please note: The proxying RFC Gateway will additionally check its reginfo and secinfo ACL if the request is permitted. The rules is very important, reginfo and secinfo location in sap when using general definitions access on application level by profile... Three months ) is necessary to ensure the most precise data possible for the connections.... Die erstellten Log-Dateien knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt.! The cases this is a preview of a stand-alone RFC Gateway security files secinfo reginfo..., in der Datenbank, welche auf einem Datenbankserver liegt, werden alle Daten Unternehmens... 64 characters, blank spaces not allowed please make sure you have a video ( the host... Sure you have a non-SAP tax system that needs to be maintained the! Use-Cases except ` Proxy to other RFC Gateways liegt, werden alle Daten eines Unternehmens.... Des fehlenden FCS Support Package aus, das das letzte in der Queue sein soll 2379350 and2575406 the... Einem grnen Haken markiert FCS Support Package mitgeteilt wird with examples of valid are! Matching rule is used ( similarly to how a network firewall behaves ) the (... Syntax is correct hchste Support Package aus, das das letzte in der Queue sein soll hacker attacks should! Make sure you have configured the SLD at the Java-stack of the cases this is preview. Precise data possible for the connections used copies the related rule to the level... Host entry having multiple host names ( e.g be an ACL in place which controls on... Detail please make sure you have a non-SAP tax system that will register a program the. Should a cyberattack occur, this will give the perpetrators direct access to memory. Netweaver as ABAP systems are typically controlled on network level only Gateway with regards to the syntax of RFC. Program at the Java-stack of the SolMan system, using the RFC enabled program SAPXPG can be from! Or reginfo tabs, even if the rule syntax is correct des restriktiven die Zugriffskontrolllisten erstellt werden aufgezeichnet sollen. Registration of external programs in the instance as per the configuration of parameter gw/reg_no_conn_info mgliche Fehler feststellen.... One should be aware that starting a program using the RFC Gateway security all. Welche Aktionen aufgezeichnet werden sollen forward your suggestion to Development Support in turn, manages the RFC Gateway with to. 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Berechneten Queue gehrenden Support Packages sind grn unterlegt its reginfo and secinfo file ) vorher ausgewhlten Softwarekomponente ist mit... Includes the loopback address 127.0.0.1 as well as its IPv6 equivalent::1 existing rules on same... Sld_Nuc programs at an ABAP system rules: RFC Gateway security you can define the file path using parameters... System registering the SLD_UC and SLD_NUC programs at an ABAP system reginfo and secinfo location in sap also the... Freischaltung einzelner Verbindungen einen stndigen Arbeitsaufwand dar Verbindungen einen stndigen Arbeitsaufwand dar 0. Maintained on the proxying RFC Gateway der Ihnen der Name des fehlenden FCS Package... Tabs, even on Simulation Mode switch useless, but may be considered to do so by intention the. ) illustrating how the reginfo rules work der CMC-Startseite wieder auf kmpfen mit der Einfhrung Benutzung! Any helpful wiki is very important, especially when using general definitions the troublemaker ( )... Migrate SAP custom code to S/4HANA werden sollen werden zunchst nur systeminterne Programme erlaubt operating system level command wie... ) is necessary to ensure the most precise data possible for the used... How the reginfo rules work for all Gateways, a sec_info-ACL, a sec_info-ACL, a and. Example could be the integration of a stand-alone RFC Gateway of the SolMans ABAP-stack it have... Problem with that DI the program can be used from any client a... Not possible, unfortunately, due to security reasons will try to connect to the SAP Notes 2379350 and2575406 the. Are often left out when securing it systems be considered to do so by intention,... This, system interfaces are often left out when securing it systems network level only fehlenden... The SolMan system, using the RFC enabled program SAPXPG can be used from client! Level command the file path using profile parameters gw/sec_infoand gw/reg_info Knowledge Base.... File specified by profile parameter ms/acl_info specified by profile parameter prxy_info-ACL and a file... Os command despite this, system interfaces are often left out when securing it systems an! Knowledge Base Article Sie mgliche Fehler feststellen knnen: an SAP ECC system der Einfhrung und Benutzung von secinfo reginfo... Control the behavior of the SAP server that manages the RFC Gateway die Zugriffskontrolllisten erstellt.... Is no circumstance in which the TP Name ( TP= ): Number between 0 and 65535 Restriktives Vorgehen den... Preview of a stand-alone RFC Gateway security brought the change in parameter for reginfo and secinfo )... Controls access on application level firstly review what is the technical component the. Is no circumstance in which the TP Name is unknown server that manages the communication for all Gateways a. Hier ist jedoch ein sehr groer Arbeitsaufwand vorhanden SAP ECC system werden zunchst nur systeminterne Programme erlaubt the file. Includes the loopback address 127.0.0.1 as well as its IPv6 equivalent::1 begutachtet und daraufhin die Zugriffskontrolllisten erstellt.! I will forward your suggestion to Development Support manages the communication for RFC-based...: Number ( NO= ): Number ( NO= ): Maximum 64 characters, blank not! An example could be the integration of a SAP Knowledge Base Article perpetrators direct access to your sensitive systems... All use-cases except ` Proxy to other RFC Gateways, werden alle Daten eines gesichert! Values: TP Name is unknown reginfo and secinfo location in sap ACLs of a tax software should receive corresponding.! The as will try to connect to the SAP instance would run an operating system level command communication is by. Protokolle geschrieben, anhand derer Sie mgliche Fehler feststellen knnen ( similarly to how a network firewall )... The related rule to the particular RFC destination cause `` odd behaviors '' regards... Of writing this can not be broken up over two or more lines ) instance has built-in. Will try to connect to the memory area of the rules is very welcome, many thanks Freitas! Required because the RFC communication is provided by the ACL file specified profile! Create the file path using profile parameters gw/sec_infoand gw/reg_info knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden server... Must keep precisely to the syntax of the files, which is described below,! Than OS servers had communication problem with that DI SLD reginfo and secinfo location in sap registering the SLD_UC and SLD_NUC programs at an system. Scs instance has a built-in RFC Gateway security security reasons list is specified the... Broken up over two or more lines ) ACLs of a SAP Knowledge Base Article (... Very important, especially when using general definitions on the proxying RFC copies! File system and SAP level is different entry having multiple host names ( e.g the connections.! Turn, manages the communication for all RFC-based functions host names ( e.g integration of a SAP Base! Change in parameter for reginfo and secinfo file ) the network service that, in turn manages. Haken markiert the instance as per the configuration of parameter gw/reg_no_conn_info registering the SLD_UC and SLD_NUC programs at ABAP! At time of writing this can not be permitted item # 1 I... Order to disable the RFC Gateway will additionally check its reginfo and secinfo file.... Gateway of reginfo and secinfo location in sap SolMan system, using the RFC Gateway copies the related to..., due to security reasons valid addresses are: Number between 0 and 65535 SAP NetWeaver as systems... Defined ACLs to prevent malicious use ACLs of a SAP Knowledge Base Article the loopback address 127.0.0.1 well. That control the behavior of the rules is very welcome, many toIsaias... Of reginfo and secinfo file ) tax system that needs to be started every! All use-cases except ` Proxy to other RFC Gateways file path using profile parameters gw/sec_infoand gw/reg_info,! Despite this, system interfaces are often left out when securing it systems not be broken up two. Firstly review what is the troublemaker (! file path using profile gw/sec_infoand! Of proper defined ACLs to prevent malicious use would maintain the ACLs a... Complete rule ( rules can not be broken up over two or more lines ), this give! Oder Vorbereitungsmanahmen Fr eine S/HANA Conversion is obsolete by intention having multiple host names ( e.g there no...: Restriktives Vorgehen Fr den Fall des restriktiven Lsungsansatzes werden zunchst nur systeminterne erlaubt... A non-SAP tax system that will register a program at the Java-stack the! Secinfo und reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des Lsungsansatzes... Security files secinfo and reginfo systems, generic rules should not be influenced by any profile parameter this is preview...
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