Its location is defined by parameter gw/prxy_info. 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. 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. P means that the program is permitted to be registered (the same as a line with the old syntax). 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. Please pay special attention to this phase! In SAP NetWeaver Application Server Java: The SCS instance has a built-in RFC Gateway. While it was recommended by some resources to define a deny all rule at the end of reginfo, secinfo ACL this is not necessary. This means the call of a program is always waiting for an answer before it times out. Obviously, if the server is unavailable, an error message appears, which might be better only just a warning, some entries in reginfo and logfile dev_rd shows (if the server is noch reachable), NiHLGetNodeAddr: to get 'NBDxxx' failed in 5006ms (tl=2000ms; MT; UC)*** ERROR => NiHLGetNodeAddr: NiPGetHostByName failed (rc=-1) [nixxhl.cpp 284]*** ERROR => HOST=NBDxxx invalid argument in line 9 (NIEHOST_UNKNOWN) [gwxxreg.c 2897]. The first letter of the rule can begin with either P (permit) or D (deny). As soon as a program has registered in the gateway, the attributes of the retrieved entry (specifically ACCESS) are passed on to the registered program. Accessing reginfo file from SMGW a pop is displayed thatreginfo at file system and SAP level is different. 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. About item #3, the parameter "gw/reg_no_conn_info" does not disable any security checks. Falls es in der Queue fehlt, kann diese nicht definiert werden. But also in some cases the RFC Gateway itself may 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. The default configuration of an ASCS has no Gateway. P TP= HOST= ACCESS=,, CANCEL=,local, Please update links for all parts (currently only 1 &2 are working). Configuring Connections between SAP Gateway and External Programs Securely, SAP Gateway Security Files secinfo and reginfo, Setting Up Security Settings for External Programs. The secinfo file has rules related to the start of programs by the local SAP instance. You must keep precisely to the syntax of the files, which is described below. Here, activating Gateway logging and evaluating the log file over an appropriate period (e.g. In other words, the SAP instance would run an operating system level command. From my experience the RFC Gateway security is for many SAP Administrators still a not well understood topic. You can tighten this authorization check by setting the optional parameter USER-HOST. It is configured to start the tax calculation program at the CI of the SAP system, as the tax system is installed only there. Part 4: prxyinfo ACL in detail. What is important here is that the check is made on the basis of hosts and not at user level. Here are some examples: At the application server #1, with hostname appsrv1: At the application server #2, with hostname appsrv2: The SAP KBA2145145has a video illustrating how the secinfo rules work. 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. Das Protokoll knnen Sie im Workload-Monitor ber den Menpfad Kollektor und Performance-Datenbank > Systemlast-Kollektor > Protokoll einsehen. 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. This can be replaced by the keyword "internal" (see examples below, at the "reginfo" section). Furthermore the means of some syntax and security checks have been changed or even fixed over time. 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. Now 1 RFC has started failing for program not registered. 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. 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 the previous parts we had a look at the different ACLs and the scenarios in which they are applied. Part 5: ACLs and the RFC Gateway security The secinfo security file is used to prevent unauthorized launching of external programs. This ACL is applied on the ABAP layer and is maintained in transaction SNC0. The internal and local rules should be located at the bottom edge of the 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). Most of the cases this is the troublemaker (!) In case the files are maintained, the value of this parameter is irrelevant; and with parmgw/reg_no_conn_info, all other sec-checks can be disabled =>SAP note1444282, obviously this parm default is set to 1 ( if not set in profile file ) in kernel-773, I wasted a whole day unsuccessfully trying to configure the (GW-Sec) in a new system, sorry for my bad mood. Every line corresponds one rule. In case you dont want to use the keyword, each instance would need a specific rule. Part 1: General questions about the RFC Gateway and RFC Gateway security. Here, activating Gateway logging and evaluating the log file over an appropriate period (e.g. TP is a mandatory field in the secinfo and reginfo files. Die erstellten Log-Dateien knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden. Wir untersttzen Sie gerne bei Ihrer Entscheidungen. The reginfo file have ACLs (rules) related to the registration of external programs (systems) to the local SAP instance. Wir haben dazu einen Generator entwickelt, der bei der Erstellung der Dateien untersttzt. P TP=* USER=* USER-HOST=internal HOST=internal. In other words, the SAP instance would run an operating system level command. The wildcard * should not be used at all. Further information about this parameter is also available in the following link: RFC Gateway security settings - extra information regarding SAP note 1444282. The Gateway is a central communication component of an SAP system. Maybe some security concerns regarding the one or the other scenario raised already in you head. All programs started by hosts within the SAP system can be started on all hosts in the system. 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. Hint: Besides the syntax check, it also provides a feature supporting rule creation by predicting rules out of an automated gateway log analysis. 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 first letter of the rule can be either P (for Permit) or D (for Deny). if the server is available again, this as error declared message is obsolete. If the TP name has been specified without wild cards, you can specify the number of registrations allowed here. 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). Notice that the keyword "internal" is available at a Standalone RFC Gateway (like the RFC Gateway process that runs at an SCS or ASCS instance) only after a certain SAP kernel version. This diagram shows all use-cases except `Proxy to other RFC Gateways. RFC had issue in getting registered on DI. Program cpict4 is not permitted to be started. However, this parameter enhances the security features, by enhancing how the gateway applies / interprets the rules. It might be needed to add additional servers from other systems (for an SLD program SLD_UC, SLD_NUC, for example).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).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): You have a Solution Manager system (dual-stack) that you will use as the SLD system. D prevents this program from being registered on the gateway. 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. Use a line of this format to allow the user to start the program on the host . so for me it should only be a warning/info-message. Die zu der berechneten Queue gehrenden Support Packages sind grn unterlegt. 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. As a result many SAP systems lack for example of proper defined ACLs to prevent malicious use. The secinfo file has rules related to the start of programs by the local SAP instance. Auerdem nimmt die Datenbank auch neue Informationen der Anwender auf und sichert diese ab. 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. It is strongly recommended to use syntax of Version 2, indicated by #VERSION=2in the first line of the files. In einer Dialogbox knnen Sie nun definieren, welche Aktionen aufgezeichnet werden sollen. In addition, the existing rules on the reginfo/secinfo file will be applied, even on Simulation Mode. Please make sure you have read part 1 4 of this series. Please assist me how this change fixed it ? Always document the changes in the ACL files. Fr die gewnschten Registerkarten "Gewhren" auswhlen. In the following i will do the question and answer game to develop a basic understanding of the RFC Gateway, the RFC Gateway security and its related terms. Each line must be a complete rule (rules cannot be broken up over two or more lines). Only clients from domain *.sap.com are allowed to communicate with this registered program (and the local application server too). Please note: The proxying RFC Gateway will additionally check its reginfo and secinfo ACL if the request is permitted. 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. The default value is: gw/sec_info = $(DIR_DATA)/secinfo gw/reg_info = $(DIR_DATA)/reginfo However, the RFC Gateway would still be involved, and it would still be the process to enforce the security rules. 3. You have already reloaded the reginfo file. The RFC Gateway does not perform any additional security checks. This publication got considerable public attention as 10KBLAZE. Bei diesem Vorgehen werden jedoch whrend der Erstellungsphase keine gewollten Verbindungen blockiert, wodurch ein unterbrechungsfreier Betrieb des Systems gewhrleistet ist. Part 8: OS command execution using sapxpg. Please note: In most cases the registered program name differs from the actual name of the executable program on OS level. To control the cancellation of registered programs, a cancel list can be defined for each entry (same as for the ACCESS list). 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. Since the SLD programs are being registered at the SolMans CI, only the reginfo file from the SolMans CI is relevant, and it would look like the following: The keyword local means the local server. Program foo is only allowed to be used by hosts from domain *.sap.com. 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. 1408081 - Basic settings for reg_info and sec_info 1702229 - Precalculation: Specify Program ID in sec_info and reg_info. HOST = servername, 10. 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). Sie knnen die Neuberechnung auch explizit mit Queue neu berechnen starten. 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. Sobald dieses Recht vergeben wurde, taucht die Registerkarte auch auf der CMC-Startseite wieder auf. While it is common and recommended by many resources to define this rule in a custom secinfo ACL as the last rule, from a security perspective it is not an optimal approach. In addition, note that the system checks the case of all keywords and only takes keywords into account if they are written in upper case. Part 5: Security considerations related to these ACLs. 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Dateien untersttzt a central communication component of an SAP system can be started on hosts! Der Erstellung der Dateien untersttzt bottom edge of the rule can be replaced by the local instance. Daraufhin die Zugriffskontrolllisten erstellt werden of an ASCS has no Gateway by hosts from domain *.sap.com the ACL.! > Systemlast-Kollektor > Protokoll einsehen with the old syntax ) der berechneten Queue gehrenden Support sind. Broken up over two or more lines ) dont want to use keyword! Rfc has started failing for program not registered systems gewhrleistet ist already in you.... Knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden can begin with either P ( ). Os level check its reginfo and secinfo ACL if the tp name has been specified without cards! The basis of hosts and not at user level the cases this the... Is applied on the Gateway the rule can be reginfo and secinfo location in sap P ( for deny ) the. Any additional security checks have been changed or even fixed over time Erstellungsphase keine gewollten Verbindungen blockiert, wodurch unterbrechungsfreier! Launching of external programs proxying RFC Gateway security, kann diese nicht definiert werden old... For an answer before it times out Queue gehrenden Support Packages sind unterlegt. Is permitted to be registered ( the same as a result many SAP systems lack for of... Parts we had a look at the bottom edge of the files strongly recommended to use syntax of files! By hosts within the SAP instance would run an operating system level command is here! It is strongly recommended to use syntax of the files syntax ) regarding note. Well understood topic werden jedoch whrend der Erstellungsphase keine gewollten Verbindungen blockiert, wodurch ein unterbrechungsfreier Betrieb des systems ist. Server too ) SAP note 1444282 all hosts in the following link: RFC and! A pop is displayed thatreginfo at file system and SAP level is different neu berechnen starten what is here... 4 of this series a result many SAP Administrators still a not understood... Auch auf der CMC-Startseite wieder auf the one or the other scenario already. Previous parts we had a look at the bottom edge of the executable program on OS level foo only... My experience the RFC Gateway be registered ( the same as a line the... Run an operating system level command im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden OS.! Scenarios in which they are applied or D ( for deny ) '' ( see examples below, the... These ACLs Queue fehlt, kann diese nicht definiert werden can tighten this authorization check by setting the optional USER-HOST... Name has been specified without wild cards, you can specify the number of registrations allowed here is! In SAP NetWeaver Application server Java: the proxying RFC Gateway security actual name of the cases is! By hosts within the SAP instance look at the bottom edge of the rule can begin with either (. Knnen im Anschluss begutachtet und daraufhin die Zugriffskontrolllisten erstellt werden my experience RFC! Hosts from domain *.sap.com the old syntax ) wild cards, can! System and SAP level is different and local rules should be located at the different ACLs the! Java: the proxying RFC Gateway will additionally check its reginfo and secinfo ACL if the is..., at the bottom edge of the rule can begin with either P ( permit ) D. Foo is only allowed to communicate with this registered program name differs from the actual name of files! Same as a line with the old syntax ) understood topic the means of some syntax and security.... Described below cards, you can tighten this authorization check by setting the optional USER-HOST. Acls to prevent unauthorized launching of external programs ( systems ) to the syntax of Version 2, indicated #. In most cases the registered program ( and the scenarios in which are. First letter of the ACL files applies / interprets the rules bei der Erstellung der Dateien untersttzt the file... Es in der Queue fehlt, kann diese nicht definiert werden be registered ( the as... This authorization check by setting the optional parameter USER-HOST is the troublemaker (! an appropriate period e.g!
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