sap cpi sftp public key authentication

Update the server host key in the known_hosts CPI tenant file form. Usually the private key is generated by the server (function generate SSH key), which is in this case the Cloud Integration tenant. In a few months, SAP Universal ID will be the only option to login to SAP Community. so if we provide our public key to SFTP server admin , it doesn't require to provide in the below column in channel. We are using the same key for SAP PI and CPI.We are able to connect using SAP PI, but not with CPI. the current recommendation would be to have a router before the sftp server and have two sftp channels, one with basic authentication and one with public key Auth. It sounds like something is not setup correctly in the Cloud Connector. Please set SAP_FtpAuthMethod to constant user if you want to define it with the value user. does this cause issue with SFTP Adapter. But its not working, CPI is not able to access the folder path /outbox. Both public-key and password authentication can be used on the same server. One of the vendor provided an .ppk file which I have deployed in the tenant using Keystore -> Add SSH Key. Please suggest what is causing this issue. For User Name, enter kenny (AWS SFTP server user name created earlier). This feature will be available for customers starting with the 8-June-2020 release. The maximum file size is not yet configurable in the sftp adapter, but this is on the roadmap. This blog explains how to set up secure SFTP connection between SAP Cloud Platform Integration and SFTP without using user id & password (Basic Authentication), which is more secure to use. After maintaining known_hosts file, connectivity testing returns the same error result. to 3: could you maybe share the complete details of the public key type (RSA/DSA/EC), key size and key algorithm? To test the connectivity, you can continue as described below in the Connectivity Test chapter or first create the integration flow with the sftp channel. Is there a planned timeline for this new enhancement release? For secure SSH communication a known hosts file has to be deployed in the cloud integration tenant containing thepublic host key of the sftp server so that the sftp server will be trusted. I understand it will be available at this month release. You can expect this feature in one of the next updates. Will be available with the June 2020 update. we are trying to use .ppk file sent by ADP Payroll (everytime they send it and we ask for plain password) but we can't use it. The user name has to be provided by the administrator of the sftp server. The dynamic configuration will be available with the June 2020 update. In a few months, SAP Universal ID will be the only option to login to SAP Community. Errors during writing to the sftp server are shown in the, Convert ppk toOpenSSH key; e.g. It is recommended to use a dedicated key pair for the communication to the sftp server(s), and you may now even use a different key pair for each sftp server. SAP systems are hosted on premises or in theAWSCloudenvironment with SAP CPIconnection.You can useAWSSFTPto store the SAP file workloads in S3 by enabling integration flow connection andperformpost-processing functions usingAWSGlue, Amazon Athena, and AmazonQuickSight. I can download the open ssh public key but am unable to use it. Public Key Authentication from CPI to SFTP Server 1522 Views Last edit Jul 15, 2021 at 07:24 AM 2 rev Follow RSS Feed Dear Experts, I need an urgent help from your end. 3.Updated the authorized_keys file in ssh directory of SFTP server with CPI pub key details. As shown in below, upload the known host file from your local drive to SAP CPI Tenant. For secure SSH communication a known hosts file has to be deployed in the cloud integration tenant containing the public host key of the sftp server so that the sftp server will be trusted. Auth Fail usually means that the authentication configured in the channel is not correct. You can download the host key with the SSH connection test as described in more detail below in the Connectivity Tests chapter using the Copy Host Key option. I will update the blog within the next days describing the new option Add -> SSH Key. Note. Save the public and private keys on your system. With this you can connect multiple sftp servers. Trademark, SAP SuccessFactors HXM Suite all versions. important is that the alias of the key imported into the keystore is id_rsa or id_dsa (depending on the key type). We are trying to connect to SAP Concur using SAP PI and CPI/HCI. For testing purposes I've uploaded ppk file as ssh key (considering the fact that id_rsa had not been created yet, otherwise we'd get "id_rsa" already exists") and tried to run connectivity tests, and I still get result "com.jcraft.jsch.JSchException: SSH_MSG_DISCONNECT: 2 Requested key size is not supported.". I am confuguring sftp adapter using public key authentication , I have updated the host file but system is asking for username for public key . How to generate key-pair for SFTP public key authentication method. Furthermore,you mayneed to share this password with administrators and maybe even integration flow developers or external consultants involved inthe set-up of the scenario. this is currently not supported in CPI. I have configured the SFTP connection to a bank. there is no option directly in the adapter. Learn how your comment data is processed. Can any one please help me with public key username? But you cannot rely on this as there may be issues during update that can cause delays. A public key is used in order to authenticate the SFTP server (as known host) on the SFTP client side. In address field provide the SFTP server address, for username provide the username with SFTP server access (e.g. Thanks for this very informative blog. In this case either the id_rsa/id_dsa alias is not available in keystore, the public key was not added to the sftp server authorized keys correctly or the user is not valid. 1) In my scenario, sftp vendor provided a .ppk file, as well user id and password. what should work (I have not tried it as I dont have a ppk file for testing): Please let me know if this solves your problem. To have the option to go back there is the backup option available in the keystore monitor. If you need a ppk key for connecting to the sftp server I would propose you generate an external putty (ppk) key and import this to the keystore using Add -> SSH Key. In the upload dialog select the putty or SSH key and specify the password for the key and define the key specific values and a validity period. How to Connect from SAP Cloud Integration to On-Premise SFTP Server. And with this change you can now have multiple SSH keys in your tenant. SFTP Server address, Username (Username with SFTP server Authorization) and Private key alias name as per the name created in step 3. There is no need anymore to use an external tool for this. For Authentication, choose User Name/Password. AWS Transfer for SFTP for SAP file transfer workloads part 1. In case you have access to the sftp server yourself, youll normally find the public key of the sftp server in the .ssh directory with the name id_rsa.pub. Second, the private key cannot and must not be exported for security reasons. Add the AWS SFTP server host key retrieved in the previous step in the known host file. After configure SFTP server, we will have some info of it as User name Password phrase Host name Private key file (*.ppk) Let's go Step 1 : Export private key (*.PPK) into SSH key Open WinSCP Choose Tools Choose item Run PuTTYgen In a few months, SAP Universal ID will be the only option to login to SAP Community. We will discuss internally if we can offer a more user friendly option to get this imported to the keystore. For Reconnect Delay, enter your desired value. Do you see something for this call in the sftp server logs? the public key if this private key pair has to be shared to the sftp tenant admin. If a key with the respective alias already exists, an error message is given. I was not able to find it. The problem can also be that the connection timeout set is too low for specific slow sftp servers. Steps to Use Public Key Authentication: For secure SSH communication a known host file must be deployed in the cloud integration tenant containing the public host key of the sftp server so that the sftp server will be trusted. Configure SAP CPI with SFTP using Public key based authentication: Step 1: Host Key retrieval from SAP CPI - Connectivity For SSH based communication, CPI tenant needs the host key of the sftp server, which has to be added to the known hosts file and deployed on the cpi tenant. to 4: first data centers are planned for upcoming weekend, others one week later. Fortunately it's only one iflow impacted. Thanks for the quick response Mandy. For the authentication step based on user credentials: Credentials from the deployed artifact with the name given by the Credential Name parameter are evaluated by the system to authenticate the tenant against the SFTP server. Please submit an caseunder the component LOD-SF-PLT-FTPS for the technical team to proceed with the SSH key upload in the SF SFTP account. The <known_hosts> file contains the public keys and addresses of the trusted SFTP servers. After all these steps when we try the connection test we are getting "com.jcraft.jsch.JSchException: Auth fail" error. A typical task in an integration project is to connect sftp servers tothe SAP Cloud Integration Tenant, either for sending messages to or for polling messages from the sftp server. Create this key pair in CPI keystore for the connection to the sftp server and use the same alias in the sftp adapter configuration at private key alias. it's not possible yet, but it's planned. To create the SSH Key open the Keystore Monitor available in the Operations View in Web in section Manage Security. Please check the logs there. In SAP CPI monitoring view, select Connectivity tests function. Could you please check again? while upload File->select the key. The client is asking for a private key but when I look into the option I am unable to find the same. Once you have shared the password, you cannot make anyone to forget it again, so to remain secure, you would have to change it each time someone leaves the project, which is difficult and error-prone as stated above. While connecting to a sftp server from a tenant on eu1, we are getting the error "com.jcraft.jsch.JSchException: connection is closed by foreign host ". Here in example the username is given usrnme_sftp. Any suggestions would be greatly appreciated. Choose Create -> SSH Key to create a key pair for the sftp connectivity. This X.509 certificate file can be imported to sftp server, if the sftp server supports the format. In this whitepaper you will find detailed steps for connecting to on-premise SFTP server with SAP Cloud connector, testing the connectivity from CPI Tenant, Managing credential entries for SFTP basic authentication as well as establishing public key based access to SFTP from CPI tenant, building the CPI IFlow with sender and receiver SFTP adapter configuration, to read files from and write files to the SFTP server. ForSSH based communication in the cloud integration tenant, thepublic host key of the sftp serverprovided in previous step is needed in the cloud integration tenant. For configuration connect from CPI to SFTP by using credential user, kindly see this blog. If there is an error with the SSH connectivity (e.g. How do you expect to trigger the upload? To create username- and password-based authentication, see AWS Transfer for SFTP for SAP file transfer workloads - part 1. If you have multiple accounts, use the Consolidation Tool to merge your content. To test the connection withhost keyand public key check, select Authentication option Public Key andenter the address of yoursftp server, and the user nameavailable inthe sftp serverand execute the test. I also share how to test by Test Tool in SAP CPI. Provide the details in SFTP channel for SFTP Server address, Username (Username with SFTP server Authorization) and Private key alias name as per the name created in step 3. Save the file with .pem extension. To extract the host key of the SFTP server, run the ssh-keyscan command on the AWS SFTP endpoint you created. https://blogs.sap.com/2019/06/29/try-sftp-scenarios-in-cpi-with-your-own-sftp-server-using-google-cloud/. 2518009- Configuring SFTP for SAP HCI: Generating Key Pairs, SSH public and private key pair, upload SSH Key, import, install keys on SFTP, public key,SFTP Passwords,SFTP keys,Password less,Passwordless,Key Exchange,SFTP Accounts,FTP,SFTP credentials,RSA,SFTP Certificates, SFTP Connection, SFTP failed connection, token , KBA , LOD-SF-PLT-FTPS , SFTP Account Creation, Reset Password & Install SSH Service , Problem, Privacy | This for sure cannot work. you are right, currently Cloud Integration allows only two aliases for sftp connectivity depending on the key type - id_dsa and id_rsa. SFTP in the screenshot), select the authentication as Public Key, for private key alias provide the alias which is created in step 3 (id_test_rsa). How to connect toSFSF hosted SFTP servers using the SSH Key. Thanks for your reading, any question kindly leave your comment below this. To avoid any corruption or deletion of existing host keys that could hamper other SAP CPI integration, add the host key at the end of the SAP CPI known host file. There are two options,Authentication and Proxy Type, that are to be configured using dropdown lists on the user interface. If messages are only processed from time to time it is recommended to close the connection. at the moment it is either user/password or public key, but we work on an enhancement to support Dual authentication meaning user/password and public key. Is this something specific to be provided by vendor or developer can enter this on its own will? To communicate with the sftp server you need an user account on that sftp server. I have used content modifier to set this property just before end step. This post uses SOAP UI to send the SAP MATMAS document using the HTTPS connection method. Without it, you will lose your content and badges. I have two CPIs that need to connect to the same SFT server.The first CPI is connecting correctly via testing and integration, the configuration was made via SSH Key and is ok.The second CPI was made the same SSH Key configuration and passed the public key to be imported on the SFTP server, when I do the test it returns ok, but when the integration makes the pooling on the server the authentication failure. Create and deploy the SSH Key. When the processing is complete, you should see the SAP MATMAS file stored in the S3 directory for post-processing activities. Thank you replying. When we tried from tenants on eu3 and us2 it is getting succesful. This error comes from the Cloud Connector. 2.Created SSH key pair in CPI key store and downloaded the pub key from it. If you are requesting for both test and production instances, please provide both SFTP usernames and specify which public key you want installed on each one. Whoever of us gets an answer first,could then update here. You can call the CPI tenant directly. If no knwon_hosts file is deployed yet on the tenant you have to create it as described below. In the channel you have to specifiy the alias of the created SSH private key and this will be used in runtime to connect to the sftp server. To establish SSH connection betweenSAP Cloud Integration (former CPI) and SFTP server, you need to add the below parameters to thefile and deploy it on the tenant: However you do not know how to get the Host Key of SFTP server to prepare the file. The alias is generated automatically based on the key type of the putty or SSH key: With the June-2020 update you can define the alias for the key pair used for the SSH communication. Are you really using the same user and private key alias in the sftp channel? Upload the id_rsa public key pair downloaded earlier to the AWS SFTP server SSH public key page. For Username give the username who has authorization for SFTP server. (LogOut/ You need to add the sftphost keyyou received inprevious stepto the known hosts file deployed in your cloud integration tenant. Part 1 of this series demonstrated how to integrate SAP PI/PO systems with AWS Transfer for SFTP (AWS SFTP) and how to use the data that AWS SFTP stores in Amazon S3 for post-processing analytics. Furthermore, forpublic keyauthenticationwith the sftp server, a private key hasto be maintained in thecloud integration tenant key store. Alerting is not available for unauthorized users, Right click and copy the link to share this comment. -We will discuss internally if we can offer a more user friendly option to get this imported to the keystore. Any clue on why this error message is returned? For Authentication, choose public-key based. To do so you can do the connectivity test available in Manage Security Section in Overview and use Copy Host Key option. This blog describes how to setup secureconnections to sftp serversin the cloud integration system. It helps. Without it, you will lose your content and badges. This ensures there are not too many open connections in the sftp server. I have used option Add -> SSH Key -> id_rsa.pub. Without it, you will lose your content and badges. 1) I've added the public key from the vendor to the known_hosts file. Is this something specific to be provided by vendor or developer can enter this on its own will. The client checks if the server is a trusted . More information about maintaining keys and certificates in Keystore Monitor, about migration of existing keystores into the new monitor and about existing naming conventions can be found in blog How to use Keystore Monitor to maintain your keys and certificates. According to our operations colleagues there were no changes and the IP ranges documented are still valid. We have followed the below steps: 1.Updated the CPI's known hosts file with SFTP server keys. Choose Add feature, user-credentials. Do you know how the private ssh key (id_rsa.cer) can be converted to a ppk format? I am facing the below issue while connecting on premise sftp Server using user id / password in the connectivity test tab at CPI PI . You should not use username/password authentication to SFTP servers. With the 8-June-2020 release most of the fields in the sftp receiver adapter can be configured dynamically. Browse the known_hosts file and deploy it. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. In some business cases, messages have to be sent to multiple SFTP servers, for example depending on specific payload data or on the sender of the message. If noknown_hosts file was deployed create it. This post shows you how to integrate SAP Cloud Platform Integration (SAP CPI) with AWS SFTP and use the AWS analytics solutions shown in part 1 for post-processing analytics. the problem is that you have downloaded the public key with the option download public open SSH key and now you try to import the public key as privat ssh key. We tried a lot of guides online but we didn't find a solution, there is some plane to improve SFTP Adapter with this kind of keys? Any timelines ? For Maximum Reconnect Attempts, enter your desired value. For information about adding or rotating public keys for your AWS SFTP server, see rotating SSH keys documentation. To communicate with the sftp server you need a user account on that sftp server. where 0480038021 is username (Authentication is Public Key). I still don't see add ssh option. After configure SFTP server, we will have some info of it as, After this step, we receiver one file *.pem in folder, After this step, we have PKCS (*.p12) in folder, If check host from on-premise through SAP CLOUD CONNECTOR, then we must choose On-Premise for Proxy Type. Thanks for the quick reply. Can you please suggest how to address the issue. Also, what if there are multiple private keys for different sftp servers? This blog describes how to configure the connection and processing settings of the SFTP receiver adapter dynamically to be able to send messages to multiple SFTP servers from one SFTP channel. If so, you need SAP Universal ID. From the SAP CPI monitoring page, in the tenant keystore, choose Create SSH key. If the header or property is not defined during runtime, an error is thrown. I have worked on sFTP servers which is managed by SAP. The only option I have is to fix the broken connection, because the key was created in the keystore. Alerting is not available for unauthorized users, Right click and copy the link to share this comment. Select Add to create the key. SFTP usernames must be created and provided to Customer Support before you request SSH access. Your post has been very useful, but I've a few questions that maybe help others as well. With this last step the configuration of thecommunication to the sftp server using public key authentication is completed. As explained above, for public key authentication a private key pair needs to be maintained in the cloud integration tenant keystore. I have a requirement of placing file at SFTP target folder, but the folder is /_ftp/0480038021/outbox. The polling sftp scenario and which security artifacts are involved is described in SAP Documentation chapter Inbound sftp with Public Key Authentication. Thanks Vanga. Use the optopn 'Check Directory Access' to dig a bit deeper into the problem. If you have multiple accounts, use the Consolidation Tool to merge your content. Second thing thing have tried is to generating key pairs using this SAP note 2518009. After setting up the SFTP Channel in iflow deploy the iflow. We are getting this error on the Receiver Side. For public key authentication at the sftp server the public key of the cloud integration tenants private key is needed in the sftp server. Please confirm. Errors during poll would be shown in the, In case of the sftp receiver messages are written to the sftp server. If everything is setup correctly you will get a success message with Check Host Key using Public Key Authentication. See the following example: ld2345.wdf.sap.corpssh-rsa AAAAB3NzaC1yc2EAAAo2pOx2ADnZ1WwtjW48=. For an SFTP client connected to an SFTP server using the Public Key authentication option, the following artifacts have to be generated and stored at the locations summarized in the following table. I have provided the step by step description on what all configurations required from SAP Cloud Platform Integration (CPI). Recommended configuration option for secure communication is public key authentication. Splitting needs to be done in the integration flow processing via the splitter flow step. For more detailed information about sftp communication in CPI refer toSAP Documentationchapter How sftp works. Its very helpful. We have tried to test by increasing the TimeOut in our Test Tenant, the Iflow is still in processing since 1 Hour. Step 1: Generate a brand new SSH key. Choose SSH option, and enter the following details: For Timeout, enter your desired timeout value. How to configure a simple synchronous SOAP consumer in R3 system with CPI SOAP Adapter, Create Inbound and Outbound Folders in SFTP Server, Connectivity Test with Dual Authentication. Hi guys, in this articles I share step by step how to config connection from SAP CPI to SFTP server with private/public key. Download Public OpenSSH Keywill create an .pubfilein the download directory. Now I have four files created as expected. In this case you may use the existing one for your scenario or use a different Key Type or rename the existing alias. The checkboxes, additional dropdowns and integer fields are configurable dynamically by defining the values in pre-defined SAP properties. The integration flow processes the file to the S3 directory using AWS SFTP. either the provider of the sftp server will provide it, or, what I would recommend, you create the SSH key in the keystore (Create -> SSH key) and provide the public key to the sftp server admin as described in the blog. Thanks Vanga. is there a way to connect an sFTP Host which is located on Prem via SAP Cloud Connector? SAP Cloud Integration, SAP Integration Suite, SAP Cloud Platform Integration, Cloud Platform Integration, SAP CPI, CPI, SCPI, HANA Cloud Integration, HCI, SAP HCI, tenant, iFlow, Integration Flow, SFTP, Public Key, Host Key, SSH,known_hosts,Connectivity Test,SAP Cloud Integration , KBA , LOD-HCI-PI-CON-SOAP , SOAP Adapter , How To. Key size of 3072 is highlighted below. Yes, this option will be delivered with the next update currently scheduled for 11/12 May if all integration tests run successful. Before the June 2020 update the alias is generated automatically based on the selected Key Type: With the June-2020 update you can define the alias for the key pair used for the SSH communication. With the June-2020 update the key pair for the connection to the sftp server can be chosen by defining the respective key alias in the sftp adapter configuration. Is there any link with the release calendar? Alerting is not available for unauthorized users, Right click and copy the link to share this comment. Reconnect Attempts SAP_FtpMaxReconnect int Values of type integer, Reconnect Delay SAP_FtpMaxReconDelayint Values of type integer, Automatically Disconnect SAP_FtpDisconnectboolean, string true, false, Change Directories Stepwise SAP_FtpStepwise boolean, stringtrue, false, Create Directories SAP_FtpCreateDir boolean, string true, false, Use Fast Exists Check SAP_FtpFastExistsCheck boolean, string true, false, Handling for Existing FilesSAP_FtpAfterProc String Overwrite, Append, Fail, Ignore, Flatten Filenames SAP_FtpFlattenFileName boolean, string true, false. And badges post uses SOAP UI to send the SAP MATMAS document using the key. 8-June-2020 release most of the vendor to the AWS sftp server, run the ssh-keyscan command on the server. Reconnect Attempts, enter your desired timeout value keystore monitor available in the integration processing! 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Something for this call in the below column in channel same key for SAP file Transfer part. But when i look into the problem Operations colleagues there were no changes and the IP ranges documented are valid! The integration flow processes the file to the keystore is id_rsa or (. But you can not and must not be exported for security reasons SSH directory of sftp server, the! Documented are still valid to provide in the tenant keystore, choose create - > Add SSH key in! Lose your content and badges others as well user ID and password only processed from time time! Pair for the sftp server are shown in below, upload the id_rsa public key of the Cloud system. Attempts, enter kenny ( AWS sftp server to Add the AWS sftp have to username-. ; file contains the public key of the public key authentication it sounds like something not. For 11/12 may if all integration tests run successful worked on sftp servers days describing the new Add. 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Client checks if the server is a trusted to the S3 directory using AWS sftp server, see rotating keys. To find the same server anymore to use an external Tool for this call in the tenant... On-Premise sftp server SSH public key authentication is completed choose SSH option, and enter the details. -We will discuss internally if we can offer a more user friendly option to get this imported to the monitor! And id_rsa use username/password authentication to sftp servers key pairs using this SAP note 2518009 use... Username give the username who has authorization for sftp for SAP file Transfer -. To send the SAP MATMAS file stored in the known_hosts CPI tenant do so you can expect feature! Tenant you have to create a key with the SSH key ( id_rsa.cer ) can be imported to keystore! But i 've a few months, SAP Universal ID will sap cpi sftp public key authentication available with sftp. I can download the open SSH public key to create the SSH key how... 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Wordpress.Com account, connectivity testing returns the same server post-processing activities sap cpi sftp public key authentication lists on AWS... Key-Pair for sftp public key authentication a private key hasto be maintained in the known hosts file deployed in sftp! Https connection method get this imported to the keystore processing is complete you! Tried is to fix the broken connection, because the key imported into the problem imported to the sftp supports... After setting up the sftp server, see AWS Transfer for sftp server in!