reginfo and secinfo location in sap

3. Only clients from domain *.sap.com are allowed to communicate with this registered program (and the local application server too). 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. Whlen Sie nun die Anwendungen / Registerkarten aus, auf die die Gruppe Zugriff erhalten soll (mit STRG knnen Sie mehrere markieren) und whlen Sie den Button Gewhren. Host Name (HOST=, ACCESS= and/or CANCEL=): The wildcard character * stands for any host name, *.sap.com for a domain, sapprod for host sapprod. Check the secinfo and reginfo files. Spielen Sie nun die in der Queue stehenden Support Packages ein [Seite 20]. Unfortunately, in this directory are also the Kernel programs saphttp and sapftp which could be utilized to retrieve or exfiltrate data. Programs within the system are allowed to register. To do this, in the gateway monitor (transaction SMGW) choose Goto Expert Functions External Security Maintenance of ACL Files .. Part 8: OS command execution using sapxpg. DIE SAP-BASIS ALS CHANCE BEGREIFEN NAHEZU JEDE INNOVATION IM UNTERNEHMEN HAT EINEN TECHNISCHEN FUSSABDRUCK IM BACKEND, DAS MEISTENS EIN SAP-SYSTEM ABBILDET. Please note: SNC User ACL is not a feature of the RFC Gateway itself. Viele Unternehmen kmpfen mit der Einfhrung und Benutzung von secinfo und reginfo Dateien fr die Absicherung von SAP RFC Gateways. if the server is available again, this as error declared message is obsolete. To prevent the list of application servers from tampering we have to take care which servers are allowed to register themselves at the Message Server as an application server. Terms of use | Darber hinaus stellt die dauerhafte manuelle Freischaltung einzelner Verbindungen einen stndigen Arbeitsaufwand dar. The rules would be: Another example: lets say that the tax system is installed / available on all servers from this SAP system, the RFC destination is set to Start on application server, and the Gateway options are blank. Es gibt verschiedene Grnde wie zB die Gesetzliche Anforderungen oder Vorbereitungsmanahmen fr eine S/HANA Conversion. It is important to mention that the Simulation Mode applies to the registration action only. Hint: Besides the syntax check, it also provides a feature supporting rule creation by predicting rules out of an automated gateway log analysis. The Solution Manager (SolMan) system has only one instance, running at the host sapsmci. A LINE with a HOST entry having multiple host names (e.g. Part 4: prxyinfo ACL in detail Part 6: RFC Gateway Logging. If USER-HOST is not specifed, the value * is accepted. 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. If you set it to zero (highlynotrecommended), the rules in the reginfo/secinfo/proxy info files will still be applied. The first letter of the rule can begin with either P (permit) or D (deny). (possibly the guy who brought the change in parameter for reginfo and secinfo file). 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). Program cpict4 is allowed to be registered if it arrives from the host with address 10.18.210.140. 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. Da das aber gewnscht ist, mssen die Zugriffskontrolllisten schrittweise um jedes bentigte Programm erweitert werden. Refer to the SAP Notes 2379350 and2575406 for the details. All programs started by hosts within the SAP system can be started on all hosts in the system. The default rule in prxyinfo ACL (as mentioned in part 4) is enabled if no custom ACL is defined. The keyword internal will be substituted at evaluation time by a list of hostnames of application servers in status ACTIVE which is periodically sent to all connected RFC Gateways. Bei groen Systemlandschaften ist dieses Verfahren sehr aufwndig. The related program alias can be found in column TP Name: We can verify if the functionality of these Registered RFC Server Programs is accessible from the AS ABAP by looking for a TCP/IP connection in transaction SM59 with Technical Settings Activation Type = Registered Server Program the corresponding Program ID and either no Gateway Options or connection details to any of the RFC Gateways belonging to the same system set: SAP introduced an internal rule in the reginfo ACL to cover these cases: P TP=* HOST=internal,local ACCESS=internal,local CANCEL=internal,local. File reginfocontrols the registration of external programs in the gateway. In diesem Blog-Beitrag werden zwei von SAP empfohlene Vorgehensweisen zur Erstellung der secinfo und reginfo Dateien aufgefhrt mit denen die Security Ihres SAP Gateways verstrkt wird und wie der Generator dabei hilft. 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. Always document the changes in the ACL files. There is a hardcoded implicit deny all rule which can be controlled by the parameter gw/sim_mode. This publication got considerable public attention as 10KBLAZE. 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. 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. Mglichkeit 2: Logging-basiertes Vorgehen Eine Alternative zum restriktiven Verfahren ist das Logging-basierte Vorgehen. 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)). secinfo und reginfo Generator anfordern Mglichkeit 1: Restriktives Vorgehen Fr den Fall des restriktiven Lsungsansatzes werden zunchst nur systeminterne Programme erlaubt. We first registered it on the server it is defined (which was getting de-registered after a while so we registered it again through background command nohup *** & ), This solved the RFC communication on that Dialogue instance yet other Dialogue instances were not able to communicate on the RFC. The Gateway uses the rules in the same order in which they are displayed in the file. 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). A rule defines. Further information about this parameter is also available in the following link: RFC Gateway security settings - extra information regarding SAP note 1444282. In the previous parts we had a look at the different ACLs and the scenarios in which they are applied. In production systems, generic rules should not be permitted. Part 5: ACLs and the RFC Gateway security. The keyword local will be substituted at evaluation time by a list of IP addresses belonging to the host of the RFC Gateway. Part 3: secinfo ACL in detail Save ACL files and restart the system to activate the parameters. It is common to define this rule also in a custom reginfo file as the last rule. Please follow me to get a notification once i publish the next part of the series. 2.20) is taken into account only if every comma-separated entry can be resolved into an IP address. All other programs starting with cpict4 are allowed to be started (on every host and by every user). Falls es in der Queue fehlt, kann diese nicht definiert werden. 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. With the reginfo file TPs corresponds to the name of the program registered on the gateway. Specifically, it helps create secure ACL files. Since programs are started by running the relevant executable there is no circumstance in which the TP Name is unknown. Only clients from the local application server are allowed to communicate with this registered program. Additional ACLs are discussed at this WIKI page. This can be replaced by the keyword "internal" (see examples below, at the "reginfo" section). To control access from the client side too, you can define an access list for each entry. Hinweis: Whlen Sie ber den Button und nicht das Dropdown-Men Gewhren aus! You can tighten this authorization check by setting the optional parameter USER-HOST. Instead, a cluster switch or restart must be executed or the Gateway files can be read again via an OS command. As a result many SAP systems lack for example of proper defined ACLs to prevent malicious use. P USER=* USER-HOST=internal,local HOST=internal,local TP=*. Another mitigation would be to switch the internal server communication to TLS using a so-called systemPKI by setting the profile parameter system/secure_communication = ON. Thank you! If the Gateway protections fall short, hacking it becomes childs play. Aus diesem Grund knnen Sie als ein Benutzer der Gruppe auch keine Registerkarten sehen. While typically remote servers start the to-be-registered program on the OS level by themselves, there may be cases where starting a program is used to register a Registered Server Program at the RFC Gateway. 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 . The reginfo ACL contains rules related to Registered external RFC Servers. The PI system has one Central Instance (CI) running at the server sappici, and one application instance (running at the server sappiapp1). Check out our SAST SOLUTIONS website or send us an e-mail us at sast@akquinet.de. Part 3: secinfo ACL in detail. Based on the original Gateway log files in the system, default values can be determined and generated for the ACL files directly after the evaluation of the data found. Firstly review what is the security level enabled in the instance as per the configuration of parameter gw/reg_no_conn_info. P TP=* USER=* USER-HOST=internal HOST=internal. Program cpict2 is allowed to be registered, but can only be run and stopped on the local host or hostld8060. 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. 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. Um diese Website nutzen zu knnen, aktivieren Sie bitte JavaScript. *. 2. 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). If these profile parameters are not set the default rules would be the following allow all rules: reginfo: P TP=* Click more to access the full version on SAP for Me (Login . On SAP NetWeaver AS ABAP registering Registered Server Programs byremote servers may be used to integrate 3rd party technologies. 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. Part 6: RFC Gateway Logging. Configuring Connections between SAP Gateway and External Programs Securely, SAP Gateway Security Files secinfo and reginfo, Setting Up Security Settings for External Programs. It is strongly recommended to use syntax of Version 2, indicated by #VERSION=2in the first line of the files. In other words, the SAP instance would run an operating system level command. Anwendungsprogramme ziehen sich die bentigten Daten aus der Datenbank. 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. This way, each instance will use the locally available tax system. If no cancel list is specified, any client can cancel the program. P TP= HOST= ACCESS=,, CANCEL=,local, Please update links for all parts (currently only 1 &2 are working).

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