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reginfo and secinfo location in sap
The message server port which accepts registrations is defined by profile parameter rdisp/msserv_internal. Please make sure you have read part 1 4 of this series. On SAP NetWeaver AS ABAP registering Registered Server Programs byremote servers may be used to integrate 3rd party technologies. Please assist ASAP. The RFC Gateway act as an RFC Server which enables RFC function modules to be used by RFC clients. The wildcard * should not be used at all. There is an SAP PI system that needs to communicate with the SLD. Hufig ist man verpflichtet eine Migration durchzufhren. 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. 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. You can define the file path using profile parameters gw/sec_infoand gw/reg_info. As we learned in part 3 SAP introduced the following internal rule in the in the secinfo ACL: You can define the file path using profile parameters gw/sec_infoand gw/reg_info. 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). Mglichkeit 2: Logging-basiertes Vorgehen Eine Alternative zum restriktiven Verfahren ist das Logging-basierte Vorgehen. This is defined by the letter, which servers are allowed to register which program aliases as a Registered external RFC Server. Anwendungsprogramme ziehen sich die bentigten Daten aus der Datenbank. Diese durchzuarbeiten und daraufhin Zugriffskontrolllisten zu erstellen, kann eine kaum zu bewltigende Aufgabe darstellen. The parameter is gw/logging, see note 910919. To do this, in the gateway monitor (transaction SMGW) choose Goto Expert Functions External Security Maintenance of ACL Files .. The simulation mode is a feature which could help to initially create the ACLs. 2. As separators you can use commas or spaces. This can be replaced by the keyword "internal" (see examples below, at the "reginfo" section). For example: an SAP SLD system registering the SLD_UC and SLD_NUC programs at an ABAP system. The reginfo file have ACLs (rules) related to the registration of external programs (systems) to the local SAP instance. Somit knnen keine externe Programme genutzt werden. (any helpful wiki is very welcome, many thanks toIsaias Freitas). If you set it to zero (highlynotrecommended), the rules in the reginfo/secinfo/proxy info files will still be applied. 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. Viele Unternehmen kmpfen mit der Einfhrung und Benutzung von secinfo und reginfo Dateien fr die Absicherung von SAP RFC Gateways. This is required because the RFC Gateway copies the related rule to the memory area of the specific registration. Please make sure you have read at least part 1 of this series to be familiar with the basics of the RFC Gateway and the terms i use to describe things. About the second comment and the error messages, those are messages related to DNS lookup.I believe that these are raised as errors because they have occurred during the parsing of the reginfo file. If the TP name itself contains spaces, you have to use commas instead. Environment. 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. Its location is defined by parameter gw/reg_info. Program cpict4 is not permitted to be started. There are other SAP notes that help to understand the syntax (refer to the Related notes section below). 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. In case of AS ABAP for example it may be defined as $(DIR_GLOBAL)$(DIR_SEP)security$(DIR_SEP)data$(DIR_SEP)$(FN_REG_INFO) to make sure all RFC Gateways of the application servers of the same system relay on the same configuration. To edit the security files,you have to use an editor at operating system level. Example Example 1: Falls es in der Queue fehlt, kann diese nicht definiert werden. We solved it by defining the RFC on MS. To do this, in the gateway monitor (transaction SMGW) choose Goto Expert Functions External Security Reread . If USER-HOST is not specifed, the value * is accepted. In these cases the program alias is generated with a random string. Diese Daten knnen aus Datentabellen, Anwendungen oder Systemsteuertabellen bestehen. 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. The default value is: gw/sec_info = $(DIR_DATA)/secinfo gw/reg_info = $(DIR_DATA)/reginfo Here, the Gateway is used for RFC/JCo connections to other systems. 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 If someone can register a "rogue" server in the Message Server, such rogue server will be included in the keyword "internal" and this could open a security hole. For example: The SAP KBAs1850230and2075799might be helpful. Darber hinaus stellt die dauerhafte manuelle Freischaltung einzelner Verbindungen einen stndigen Arbeitsaufwand dar. 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). Part 2: reginfo ACL in detail. Part 4: prxyinfo ACL in detail. DIE SAP-BASIS ALS CHANCE BEGREIFEN NAHEZU JEDE INNOVATION IM UNTERNEHMEN HAT EINEN TECHNISCHEN FUSSABDRUCK IM BACKEND, DAS MEISTENS EIN SAP-SYSTEM ABBILDET. Part 3: secinfo ACL in detail. 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). Thus, part of your reginfo might not be active.The gateway is logging an error while performing name resolution.The operating system / DNS took 5 seconds to reply - 5006ms per the error message you posted; and the response was "host unknown".If the "HOST" argument on the reginfo rule from line 9 has only one host, then the whole rule is ignored as the Gateway could not determine the IP address of the server.Kind regards. open transaction SMGW -> Goto -> expert functions -> Display secinfo/reginfo Green means OK, yellow warning, red incorrect. The following syntax is valid for the secinfo file. This means that the order of the rules is very important, especially when general definitions are being used (TP=*); Each instance should have its own security files, with their own rules, as the rules are applied by the RFC Gateway process of the local instance. 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. 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. Once you have completed the change, you can reload the files without having to restart the gateway. 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? 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). If these profile parameters are not set the default rules would be the following allow all rules: reginfo: P TP=* 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. Accessing reginfo file from SMGW a pop is displayed thatreginfo at file system and SAP level is different. 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). With this rule applied any RFC enabled program on any of the servers covered by the keyword internal is able to register itself at the RFC Gateway independent from which user started the corresponding executable on OS level (again refer to 10KBLAZE). The first letter of the rule can be either P (for Permit) or D (for Deny). In SAP NetWeaver Application Server Java: The SCS instance has a built-in RFC Gateway. 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. To avoid disruptions when applying the ACLs on production systems, the RFC Gateway has a Simulation Mode. If the option is missing, this is equivalent to HOST=*. Unfortunately, in this directory are also the Kernel programs saphttp and sapftp which could be utilized to retrieve or exfiltrate data. 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). The RFC Gateway is capable to start programs on the OS level. 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. Hint: Besides the syntax check, it also provides a feature supporting rule creation by predicting rules out of an automated gateway log analysis. Please pay special attention to this phase! Part 1: General questions about the RFC Gateway and RFC Gateway security. We should pretend as if we would maintain the ACLs of a stand-alone RFC Gateway. 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. 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. Only clients from the local application server are allowed to communicate with this registered program. There are three places where we can find an RFC Gateway: The RFC Gateway is by default reachable via the services sapgw
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