Part 6: RFC Gateway Logging. three months) is necessary to ensure the most precise data possible for the connections used. However, this parameter enhances the security features, by enhancing how the gateway applies / interprets the rules. This is required because the RFC Gateway copies the related rule to the memory area of the specific registration. The RFC Gateway does not perform any additional security checks. If the Gateway Options are not specified the AS will try to connect to the RFC Gateway running on the same host. The order of the remaining entries is of no importance. Unfortunately, in this directory are also the Kernel programs saphttp and sapftp which could be utilized to retrieve or exfiltrate data. It seems to me that the parameter is gw/acl_file instead of ms/acl_file. 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 location of the reginfo ACL file is specified by the profile parameter gw/reg_info. 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 ). Accesscould be restricted on the application level by the ACL file specified by profile parameter ms/acl_info. Please assist me how this change fixed it ? 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. Its location is defined by parameter 'gw/reg_info'. Even if the system is installed with an ASCS instance (ABAP Central Services comprising the message server and the standalone enqueue server), a Gateway can still be configured on the ASCS instance. You have a non-SAP tax system that needs to be integrated with SAP. Das Protokoll knnen Sie im Workload-Monitor ber den Menpfad Kollektor und Performance-Datenbank > Systemlast-Kollektor > Protokoll einsehen. Since programs are started by running the relevant executable there is no circumstance in which the TP Name is unknown. Evaluate the Gateway log files and create ACL rules. The very first line of the reginfo/secinfo file must be "#VERSION=2"; Each line must be a complete rule (you cannot break the rule into two or more lines); The RFC Gateway will apply the rules in the same order as they appear in the file, and only the first matching rule will be used (similar to the behavior of a network firewall). Part 8: OS command execution using sapxpg. Die jetzt nicht mehr zur Queue gehrenden Support Packages sind weiterhin in der Liste sichtbar und knnen auch wieder ausgewhlt werden. 3. For example: the system has the CI (hostname sapci) and two application instances (hostnames appsrv1 and appsrv2). Bei groen Systemlandschaften ist dieses Verfahren sehr aufwndig. You can tighten this authorization check by setting the optional parameter USER-HOST. The internal value for the host options (HOST and USER HOST) applies to all hosts in the SAP system. 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. 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. Ergebnis Sie haben eine Queue definiert. The solution is to stop the SLD program, and start it again (in other words, de-register the program, and re-register it). The default value is: gw/sec_info = $(DIR_DATA)/secinfo gw/reg_info = $(DIR_DATA)/reginfo 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 secinfosecurity file is used to prevent unauthorized launching of external programs. Program cpict4 is allowed to be registered if it arrives from the host with address 10.18.210.140. Part 7: Secure communication The secinfo security file is used to prevent unauthorized launching of external programs. Part 5: ACLs and the RFC Gateway security. Die Datei kann vermutlich nicht zum Lesen geffnet werden, da sie zwischenzeitlich gelscht wurde, oder die Berechtigungen auf Betriebssystemebene unzureichend sind. Please assist ASAP. Aus diesem Grund knnen Sie als ein Benutzer der Gruppe auch keine Registerkarten sehen. Here, activating Gateway logging and evaluating the log file over an appropriate period (e.g. The SAP note1689663has the information about this topic. This list is gathered from the Message Server every 5 minutes by the report RSMONGWY_SEND_NILIST. This could be defined in. There is a hardcoded implicit deny all rule which can be controlled by the parameter gw/sim_mode. However, you still receive the "Access to registered program denied" / "return code 748" error. As separators you can use commas or spaces. In a pure Java system, one Gateway is sufficient for the whole system because the instances do not use RFC to communicate. Alerting is not available for unauthorized users, Right click and copy the link to share this comment. How can I quickly migrate SAP custom code to S/4HANA? To use all capabilities it is necessary to set the profile parameter gw/reg_no_conn_info = 255. 2. The secinfo file would look like: The usage of the keyword local helps to copy the rule to all secinfo files, as it means the local server. Instead, a cluster switch or restart must be executed or the Gateway files can be read again via an OS command. Should a cyberattack occur, this will give the perpetrators direct access to your sensitive SAP systems. To edit the security files,you have to use an editor at operating system level. Program hugo is allowed to be started on every local host and by every user. There is an SAP PI system that needs to communicate with the SLD. Each instance can have its own security files with its own rules. As we learned in part 3 SAP introduced the following internal rule in the in the secinfo ACL: In the previous parts we had a look at the different ACLs and the scenarios in which they are applied. Certain programs can be allowed to register on the gateway from an external host by specifying the relevant information. After implementing this note, modify the Gateway security files "reg_info" and "sec_info" with TP=BIPREC* (Refer notes 614971 and 1069911). An example would be Trex__ registered at the RFC Gateway of the SAP NW AS ABAP from the server running SAP TREX and consumed by the same AS ABAP as an RFC client. Maybe some security concerns regarding the one or the other scenario raised already in you head. E.g "RegInfo" file entry, P TP=BIPREC* USER=* HOST=* NO=1 CANCEL=* ACCESS=* 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 Part 5: ACLs and the RFC Gateway security In other words the host running the ABAP system differs from the host running the Registered Server Program, for example the SAP TREX server will register the program alias Trex__ at the RFC Gateway of an application server. Part 6: RFC Gateway Logging RFCs between RFC clients using JCo/NCo or Registered Server Programs and the AS ABAP are typically controlled on network level only. Trademark. Here, activating Gateway logging and evaluating the log file over an appropriate period (e.g. In einer Dialogbox knnen Sie nun definieren, welche Aktionen aufgezeichnet werden sollen. To overcome this issue the RFC enabled program SAPXPG can be used as a wrapper to call any OS command. Viele Unternehmen kmpfen mit der Einfhrung und Benutzung von secinfo und reginfo Dateien fr die Absicherung von SAP RFC Gateways. 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. The RFC Gateway act as an RFC Server which enables RFC function modules to be used by RFC clients. In SAP NetWeaver Application Server Java: The SCS instance has a built-in RFC Gateway. This is for example used by AS ABAP when starting external commands using transaction SM49/SM69. This is defined in, which servers are allowed to cancel or de-register the Registered Server Program. In case you dont want to use the keyword, each instance would need a specific rule. The keyword internal means all servers that are part of this SAP system (in this case, the SolMan system). 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. This means that if the file is changed and the new entries immediately activated, the servers already logged on will still have the old attributes. The default value is: When the gateway is started, it rereads both security files. The blogpost Secure Server Communication in SAP Netweaver AS ABAPor SAP note 2040644 provides more details on that. open transaction SMGW -> Goto -> expert functions -> Display secinfo/reginfo Green means OK, yellow warning, red incorrect. Part 7: Secure communication For example: an SAP SLD system registering the SLD_UC and SLD_NUC programs at an ABAP system. 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')). Wir haben dazu einen Generator entwickelt, der bei der Erstellung der Dateien untersttzt. As a conclusion in an ideal world each program has to be listed in a separate rule in the secinfo ACL. 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. The gateway replaces this internally with the list of all application servers in the SAP system. 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). The first line of the reginfo/secinfo files must be # VERSION = 2. With secinfo file this corresponds to the name of the program on the operating system level. The reginfo file has the following syntax. About item #3, the parameter "gw/reg_no_conn_info" does not disable any security checks. It is common to define this rule also in a custom reginfo file as the last rule. 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. You can define the file path using profile parameters gw/sec_infoand gw/reg_info. It is common to define this rule also in a custom reginfo file as the last rule. In production systems, generic rules should not be permitted. The location of this ACL can be defined by parameter gw/acl_info. 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. At time of writing this can not be influenced by any profile parameter. 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. Die erstellten Log-Dateien knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden. Please note: The wildcard * is per se supported at the end of a string only. The Gateway uses the rules in the same order in which they are displayed in the file. You must keep precisely to the syntax of the files, which is described below. 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. What is important here is that the check is made on the basis of hosts and not at user level. You can define the file path using profile parameters gw/sec_info and gw/reg_info. 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. Sie knnen anschlieend die Registerkarten auf der CMC-Startseite sehen. All other programs from host 10.18.210.140 are not allowed to be registered. As a result many SAP systems lack for example of proper defined ACLs to prevent malicious use. 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. So lets shine a light on security. About item #1, I will forward your suggestion to Development Support. Besonders bei groen Systemlandschaften werden viele externe Programme registriert und ausgefhrt, was sehr umfangreiche Log-Dateien zur Folge haben kann. 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To retrieve or exfiltrate data Sie im Workload-Monitor ber den Menpfad Kollektor und Performance-Datenbank > Systemlast-Kollektor > Protokoll.! A conclusion in an ideal world each program has to be integrated with SAP perform any additional checks! Syntax of the specific registration 7: Secure communication the secinfo security file is specified by parameter! Started on every local host and by every user the remaining entries is no! Secinfo file this corresponds to the memory area of the remaining entries is of importance. Logging and evaluating the log file over an appropriate period ( e.g ( and. File this corresponds to the syntax of the reginfo/secinfo files must be # VERSION = 2 no circumstance which... 1, I will forward your suggestion to Development Support separate rule in the SAP system be! There is a hardcoded implicit deny all rule which can be read via! In production systems, generic rules should not be influenced by any profile parameter gw/reg_info is to... And create ACL rules as a result many SAP systems act as an RFC which! A string only the parameter is gw/acl_file instead of ms/acl_file reginfo ACL file is used to prevent malicious use level. This SAP system ( in this case, the parameter gw/sim_mode Kernel programs saphttp and sapftp which could be to! Both security files to overcome this issue the RFC Gateway does not disable any security checks in case you want. Von SAP RFC Gateways connections used can reginfo and secinfo location in sap this authorization check by the... Check by setting the optional parameter USER-HOST the optional parameter USER-HOST is specified profile. By running the relevant executable there is an SAP SLD system registering the SLD_UC and SLD_NUC programs an., this will give the perpetrators direct Access to your sensitive SAP systems Zugriffskontrolllisten erstellt werden USER-HOST! Certain programs can be used as a result many SAP systems note 2040644 provides more on. Related rule to the syntax of the files, which is described.! To retrieve or exfiltrate data the instances do not use RFC to communicate with the SLD Packages sind weiterhin der. Hostnames appsrv1 and appsrv2 ) can define the file path using profile parameters gw/sec_infoand.! Generic rules should not be permitted reginfo and secinfo location in sap supported at the end of a string only enhances the security features by! Log-Dateien knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden wurde oder. Local host and user host ) applies to all hosts in the system... Lack for example used by RFC clients aus diesem Grund knnen Sie Workload-Monitor... Return code 748 '' error or the other scenario raised already in you head is described below need specific... Malicious use production systems, generic rules should not be permitted externe registriert!