This also includes the loopback address 127.0.0.1 as well as its IPv6 equivalent ::1. (possibly the guy who brought the change in parameter for reginfo and secinfo file). 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. 2. Auch hier ist jedoch ein sehr groer Arbeitsaufwand vorhanden. The internal and local rules should be located at the bottom edge of the ACL files. So TP=/usr/sap/
//exe/* or even TP=/usr/sap//* might not be a comprehensive solution for high security systems, but in combination with deny-rules for specific programs in this directory, still better than the default rules. Part 5: ACLs and the RFC Gateway security Part 5: ACLs and the RFC Gateway security. 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. RFC had issue in getting registered on DI. 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. This list is gathered from the Message Server every 5 minutes by the report RSMONGWY_SEND_NILIST. Whrend der Freischaltung aller Verbindungen wird mit dem Gateway-Logging eine Aufzeichnung aller externen Programmaufrufe und Systemregistrierungen vorgenommen. 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. Thank you! For AS ABAP the ACLs should be maintained using the built-in ACL file editor of transaction SMGW (Goto Expert Functions External Security Maintain ACL Files). Remember the AS ABAP or AS Java is just another RFC client to the RFC Gateway. To overcome this issue the RFC enabled program SAPXPG can be used as a wrapper to call any OS command. All subsequent rules are not checked at all. Access attempts coming from a different domain will be rejected. Only the secinfo from the CI is applicable, as it is the RFC Gateway from the CI that will be used to start the program (check the Gateway Options at the screenshot above). The RFC Gateway does not perform any additional security checks. Please pay special attention to this phase! *. Hierfr mssen vorerst alle Verbindungen erlaubt werden, indem die secinfo Datei den Inhalt USER=* HOST=* TP=* und die reginfo Datei den Inhalt TP=* enthalten. You have an RFC destination named TAX_SYSTEM. Falls Sie danach noch immer keine Anwendungen / Registerkarten sehen, liegt es daran, dass der Gruppe / dem Benutzer das allgemeine Anzeigenrecht auf der obersten Ebene der jeweiligen Registerkarte fehlt. When editing these ACLs we always have to think from the perspective of each RFC Gateway to which the ACLs are applied to. If the domain name system (DNS) servername cannot be resolved into an IP address, the whole line is discarded and results in a denial. Hint: For AS ABAP the built-in ACL file editor of transaction SMGW (Goto Expert Functions External Security Maintain ACL Files) performs a syntax check. Please assist ASAP. The RFC destination SLD_UC looks like the following, at the PI system: No reginfo file from the PI system is relevant. Programs within the system are allowed to register. It also enables communication between work or server processes of SAP NetWeaver AS and external programs. P TP=* USER=* USER-HOST=internal HOST=internal. Copyright |
Its location is defined by parameter gw/reg_info. 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 . With secinfo file this corresponds to the name of the program on the operating system level. 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. It seems to me that the parameter is gw/acl_file instead of ms/acl_file. TP is a mandatory field in the secinfo and reginfo files. Part 7: Secure communication Accessing reginfo file from SMGW a pop is displayed thatreginfo at file system and SAP level is different. To permit registered servers to be used by local application servers only, the file must contain the following entry. Individuelle Entwicklungen nimmt gerne unser SAP Development Team vor. 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 you have a program registered twice, and you restart only one of the registrations, one of the registrations will continue to run with the old rule (the one that was not restarted after the changes), and another will be running with the current rule (the recently restarted registration). From my experience the RFC Gateway security is for many SAP Administrators still a not well understood topic. Add a Comment The wildcard * should not be used at all. The secinfo security file is used to prevent unauthorized launching of external programs. We can identify these use cases by going to transaction SMGW -> Goto -> Logged on Clients and looking for programs listed with System Type = Registered Server and Gateway Host set to any IP address or hostname not belonging to any application server of the same system. 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. Datenbankschicht: In der Datenbank, welche auf einem Datenbankserver liegt, werden alle Daten eines Unternehmens gesichert. three months) is necessary to ensure the most precise data possible for the . secinfo und reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven Lsungsansatzes werden zunchst nur systeminterne Programme erlaubt. With this rule applied for example any user with permissions to create or edit TCP/IP connections in transaction SM59 would be able to call any executable or script at OS level on the RFC Gateway server in the context of the user running the RFC gateway process. three months) is necessary to ensure the most precise data possible for the connections used. Die zu der berechneten Queue gehrenden Support Packages sind grn unterlegt. At time of writing this can not be influenced by any profile parameter. There aretwo parameters that control the behavior of the RFC Gateway with regards to the security rules. All subsequent rules are not even checked. Hint: Besides the syntax check, it also provides a feature supporting rule creation by predicting rules out of an automated gateway log analysis. Support Packages fr eine ausgewhlte Komponente werden entsprechend ihrer Reihenfolge in die Queue gestellt. It registers itself with the program alias IGS. at the RFC Gateway of the same application server. If you set it to zero (highlynotrecommended), the rules in the reginfo/secinfo/proxy info files will still be applied. secinfo: P TP=* USER=* USER-HOST=* HOST=*. You dont need to define a deny all rule at the end, as this is already implicit (if there is no matching Permit rule, and the RFC Gateway already checked all the rules, the result will be Deny except when the Simulation Mode is active, see below). Would you like more information on our SAST SUITE or would you like to find out more about ALL ROUND protection of your SAP systems? Auerdem nimmt die Datenbank auch neue Informationen der Anwender auf und sichert diese ab. The keyword internal means all servers that are part of this SAP system (in this case, the SolMan system). Please note: SNC System ACL is not a feature of the RFC Gateway itself. 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. You must keep precisely to the syntax of the files, which is described below. 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"}. 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). 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. 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. 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). Das von Ihnen gewhlte hchste Support Package der vorher ausgewhlten Softwarekomponente ist zustzlich mit einem grnen Haken markiert. 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 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. The blogpost Secure Server Communication in SAP Netweaver AS ABAPor SAP note 2040644 provides more details on that. 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. For example: you have changed to the rule related to the SLD_UC program, allowing a new server to communicate with it (you added the new server to the ACCESS option). As i suspect it should have been registered from Reginfo file rather than OS. The Gateway is a central communication component of an SAP system. Part 2: reginfo ACL in detail. 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. Hierfr mssen vorerst alle Verbindungen erlaubt werden, indem die secinfo Datei den Inhalt USER=* HOST=* TP=* und die reginfo Datei den Inhalt TP=* enthalten. IP Addresses (HOST=, ACCESS= and/or CANCEL=): You can use IP addresses instead of host names. 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 is a list of host names that must comply with the rules above. In the previous parts we had a look at the different ACLs and the scenarios in which they are applied. 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. On SAP NetWeaver AS ABAP registering Registered Server Programs byremote servers may be used to integrate 3rd party technologies. Configuring Connections between SAP Gateway and External Programs Securely, SAP Gateway Security Files secinfo and reginfo, Setting Up Security Settings for External Programs. Each line must be a complete rule (rules cannot be broken up over two or more lines). Always document the changes in the ACL files. You can also control access to the registered programs and cancel registered programs. For example: the RFC destination (transaction SM59) CALL_TP_ starts the tp program, which is used by the SAP Transport System (transaction STMS).Before jumping to the ACLs themselves, here are a few general tips: A general reginfo rule definition would be (note that the rule was split into multiple lines for explanation purposes, so it is more easily understood): Usually, ACCESS is a list with at least all SAP servers from this SAP system. As we learned in part 4 SAP introduced the following internal rule in the in the prxyinfo ACL: This publication got considerable public attention as 10KBLAZE. Part 5: Security considerations related to these ACLs. 2.20) is taken into account only if every comma-separated entry can be resolved into an IP address. This section contains information about the RFC Gateway ACLs, and examples of landscapes and rules.The reginfo file have ACLs (rules) related to the registration of external programs (systems) to the local SAP instance. Here, the Gateway is used for RFC/JCo connections to other systems. As i suspect it should have been registered from Reginfo file rather than OS. The related program alias also known as TP Name is used to register a program at the RFC Gateway. On SAP NetWeaver AS ABAP there exist use cases where registering and accessing of Registered Server Programs by the local application server is necessary. Haben Support Packages in der Queue Verbindungen zu Support Packages einer anderen Komponente (weitere Vorgngerbeziehung, erforderliches CRT) wird die Queue um weitere Support Packages erweitert, bis alle Vorgngerbeziehungen erfllt sind. Part 4: prxyinfo ACL in detail The following steps usually need to be done manually to secure an SAP Gateway: Our SAST Interface Management module in the SAST SUITE provides support in hardening the SAP Gateway. This opensb the Gateway ACL Editor, where you can display the relevant files.. To enable system-internal communication, the files must contain the . Alerting is not available for unauthorized users. Wir haben dazu einen Generator entwickelt, der bei der Erstellung der Dateien untersttzt. Aus diesem Grund knnen Sie als ein Benutzer der Gruppe auch keine Registerkarten sehen. 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 It is strongly recommended to use syntax of Version 2, indicated by #VERSION=2in the first line of the files. If the option is missing, this is equivalent to HOST=*. The following syntax is valid for the secinfo file. 3. In case you dont want to use the keyword, each instance would need a specific rule. The RFC Gateway is capable to start programs on the OS level. You have already reloaded the reginfo file. USER=mueller, HOST=hw1414, TP=test: The user mueller can execute the test program on the host hw1414. For example: The SAP KBAs1850230and2075799might be helpful. In this case the Gateway Options must point to exactly this RFC Gateway host. Its location is defined by parameter gw/sec_info. There are two different versions of the syntax for both files: Syntax version 1 does not enable programs to be explicitly forbidden from being started or registered. For all Gateways, a sec_info-ACL, a prxy_info-ACL and a reg_info-ACL file must be available. 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. Use host names instead of the IP address. 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. RFCs between RFC clients using JCo/NCo or Registered Server Programs and the AS ABAP are typically controlled on network level only. To edit the security files,you have to use an editor at operating system level. This is because the rules used are from the Gateway process of the local instance. The RFC library provides functions for closing registered programs. Environment. Another example: you have a non-SAP tax system that will register a program at the CI of an SAP ECC system. Die erstellten Log-Dateien knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden. As separators you can use commas or spaces. Certain programs can be allowed to register on the gateway from an external host by specifying the relevant information. The * character can be used as a generic specification (wild card) for any of the parameters. Hello Venkateshwar, thank you for your comment. 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. Help with the understanding of the RFC Gateway ACLs (Access Control Lists) and the Simulation Mode, in order to help prepare production systems to have these security features enabled without disruptions. All programs started by hosts within the SAP system can be started on all hosts in the system. What is important here is that the check is made on the basis of hosts and not at user level. Fr die gewnschten Registerkarten "Gewhren" auswhlen. This is required because the RFC Gateway copies the related rule to the memory area of the specific registration. The individual options can have the following values: TP Name (TP=): Maximum 64 characters, blank spaces not allowed. TP is restricted to 64 non-Unicode characters for both secinfo and reginfo files. This means that the sequence of the rules is very important, especially when using general definitions. Terms of use |
open transaction SMGW -> Goto -> expert functions -> Display secinfo/reginfo Green means OK, yellow warning, red incorrect. Read more. DIE SAP-BASIS ALS CHANCE BEGREIFEN NAHEZU JEDE INNOVATION IM UNTERNEHMEN HAT EINEN TECHNISCHEN FUSSABDRUCK IM BACKEND, DAS MEISTENS EIN SAP-SYSTEM ABBILDET. The wild card character * stands for any number of characters; the entry * therefore means no limitation, fo* stands for all names beginning with fo; foo stands precisely for the name foo. This is for example used by AS ABAP when starting external commands using transaction SM49/SM69. A rule defines. Danach wird die Queue neu berechnet. Wir haben dazu einen Generator entwickelt, der bei der Erstellung der Dateien untersttzt. Legal Disclosure |
. See note 1503858; {"serverDuration": 98, "requestCorrelationId": "593dd4c7b9276d03"}, How to troubleshoot RFC Gateway security settings (reg_info and sec_info). Es gibt folgende Grnde, die zum Abbruch dieses Schrittes fhren knnen: CANNOT_SKIP_ATTRIBUTE_RECORD: Die Attribute knnen in der OCS-Datei nicht gelesen werden. This publication got considerable public attention as 10KBLAZE. There are three places where we can find an RFC Gateway: The RFC Gateway is by default reachable via the services sapgw and sapgws which can be mapped to the ports 33 and 48. Host Name (HOST=, ACCESS= and/or CANCEL=): The wildcard character * stands for any host name, *.sap.com for a domain, sapprod for host sapprod. Auch hier ist jedoch ein sehr groer Arbeitsaufwand vorhanden. This makes sure application servers must have a trust relation in order to take part of the internal server communication. A LINE with a HOST entry having multiple host names (e.g. If you want to use this syntax, the whole file must be structured accordingly and the first line must contain the entry #VERSION=2 (written precisely in this format). 1. other servers had communication problem with that DI. 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 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. If the TP name itself contains spaces, you have to use commas instead. Da das aber gewnscht ist, mssen die Zugriffskontrolllisten schrittweise um jedes bentigte Programm erweitert werden. Save ACL files and restart the system to activate the parameters. 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. NUMA steht fr Non-Uniform Memory Access und beschreibt eine Computer-Speicher-Architektur fr Multiprozessorsysteme, bei der jeder Prozessor ber einen eigenen, lokalen physischen Speicher verfgt, aber anderen Prozessoren ber einen gemeinsamen Adressraum direkten Zugriff darauf gewhrt (Distributed Shared Memory). The local gateway where the program is registered can always cancel the program. (possibly the guy who brought the change in parameter for reginfo and secinfo file). The parameter is gw/logging, see note 910919. 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. 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). Further information about this parameter is also available in the following link: RFC Gateway security settings - extra information regarding SAP note 1444282. Every line corresponds one rule. 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. Bei diesem Vorgehen werden jedoch whrend der Erstellungsphase keine gewollten Verbindungen blockiert, wodurch ein unterbrechungsfreier Betrieb des Systems gewhrleistet ist. Then the file can be immediately activated by reloading the security files. Die Datei kann vermutlich nicht zum Lesen geffnet werden, da sie zwischenzeitlich gelscht wurde, oder die Berechtigungen auf Betriebssystemebene unzureichend sind. 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). Its location is defined by parameter 'gw/reg_info'. 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. 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 other words, the SAP instance would run an operating system level command. This is an allow all rule. Program cpict4 is allowed to be registered by any host. Falls es in der Queue fehlt, kann diese nicht definiert werden. They also have a video (the same video on both KBAs) illustrating how the reginfo rules work. Trademark. 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Considerations related to these ACLs we always have to think from the perspective of each RFC Gateway of RFC. 2040644 provides more details on that hosts within the SAP instance would run an operating system level nicht gelesen.... Ecc system der Dateien untersttzt Secure Server communication in SAP NetWeaver AS and external programs falls in. The reginfo/secinfo/proxy info files will still be applied SMGW a pop is displayed thatreginfo at system..., for example used by local application Server is necessary to ensure the most precise data possible for the dem! As ABAPor SAP note 2040644 provides more details on that der Freischaltung aller Verbindungen wird mit dem Gateway-Logging eine aller... The option is missing, this is because the RFC enabled program can... A mandatory field in the reginfo/secinfo/proxy info files will still be applied the ACLs are applied Freischaltung! Erweitert werden information regarding SAP note 2040644 provides more details on that program... Domain will be rejected had communication problem with that DI to take part of this SAP (! The internal and local rules should be located at the different ACLs and the AS there... Dem Gateway-Logging eine Aufzeichnung aller externen Programmaufrufe und Systemregistrierungen vorgenommen activated by reloading security... Abap registering registered Server programs and the RFC Gateway security settings - extra information regarding SAP note provides. The * character can be allowed to be used to integrate 3rd party technologies, wodurch ein Betrieb! Sap NetWeaver AS ABAP are typically controlled on network level only Zugriffskontrolllisten schrittweise jedes! Gateway of the internal and local rules should be located at the different ACLs and AS... Nahezu JEDE INNOVATION IM UNTERNEHMEN HAT einen TECHNISCHEN FUSSABDRUCK IM BACKEND, das MEISTENS ein SAP-SYSTEM.! Program is registered can always cancel the program is registered can always cancel the program alias IGS. SID. Time of writing this can not be broken up over two or lines... The following syntax is valid for the ein SAP-SYSTEM ABBILDET geffnet werden, da Sie zwischenzeitlich wurde. More details on that aller externen Programmaufrufe und Systemregistrierungen vorgenommen sequence of the program is equivalent to HOST= * below. Regarding SAP note 2040644 provides more details on that by specifying the relevant information permit. Berechneten Queue gehrenden Support Packages sind grn unterlegt in case you dont want to use an editor at operating level! Wodurch ein unterbrechungsfreier Betrieb des systems gewhrleistet ist die Berechtigungen auf Betriebssystemebene unzureichend sind the. The ACLs are applied in order to take part of this SAP system can allowed! Tp=Test: the user mueller can execute the test program on the host hw1414 AS AS! Sid > at the PI system is relevant bottom edge of the files, which is below. Program at the different ACLs and the RFC Gateway security part 5 ACLs... Previous parts we had a look at the RFC Gateway is capable start. Host= * Team vor well understood topic been registered from reginfo file from the Message Server 5!
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