As far as I know there are no public sftp servers to send messages to. This article describes the procedure of getting the Host Key. If the header or property is not defined during runtime, an error is thrown. I tested initially with FileZilla to check if it works and it does. Environment SAP Cloud Platform Integration for Data Services Product SAP Cloud Integration for data services 1.0 Keywords sftp, key, ssh, security, login, fingerprint, ftp, transfer, putty, puttygen , KBA , LOD-HCI-DS , HANA Cloud Integration for Data Services , How To Is that correct? Recommended configuration option for secure communication is public key authentication. This will be available with the June 2020 update, blog will be updated. I will update the blog within the next days describing the new option Add -> SSH Key. Select the check boxes for Check Host Key and Check Directory access. Create an integration flow with an sftp sender or receiver channel and define the Connection Parameters accordingly: After the deployment of the integration flow the access to the sftp server should work. 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. thanks for this feedback, I was not aware the Auth Fail could also be a timeout issue. A public key is used in order to authenticate the SFTP server (as known host) on the SFTP client side. The problem can also be that the connection timeout set is too low for specific slow sftp servers. On the Add User Credentials page, enter the credentials and deploy the following entries: For Name, enter a credential name to retrieve your user name and password credentials in the SAP CPI integration flow. I see in the SSH Connectivity Test there is an option for Authentication: None. Starting with the 8-June-2020 release, you can configure the SFTP adapter in Cloud Integration dynamically. the connection timeout of the sftp server). How to generate key-pair for SFTP public key authentication method. Can any one please help me with public key username? to 4: first data centers are planned for upcoming weekend, others one week later. But currently it is not possible to have multiple SSH keys for connecting to the sftp servers. Check the file in SFTP server. Thanks in advance for your lightening response! Public keys of all connected SFTP servers are stored in a <known_hosts> file on the client side. Second, the private key cannot and must not be exported for security reasons. Make sure to specify the SFTP username that you want the public key installed on. 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. There is no need to define all the configuration options dynamically, I recommend you to do so only if the required settings differ for the different SFTP servers you want to connect to. The <known_hosts> file contains the public keys and addresses of the trusted SFTP servers. ForSSH based communication, the cloud integration tenant needs thehost keyof thesftp server, which has to be added to the known hosts file and deployed on thecloud integration tenant in the next step. Besides, most sftp servers close an idle connection from their side after a certain period of time (i.e. You can now use this SSH key pair based SAP CPI connection to create an integration flow between your SAP systems and AWS SFTP server for your file-transfer workloads. Splitting needs to be done in the integration flow processing via the splitter flow step. ), But when we run the interface, we are getting the following error, org.apache.camel.component.file.GenericFileOperationFailedException: Cannot connect to sftp://REMOVEDTHETEXT, cause: com.jcraft.jsch.JSchException: Auth fail. This is password which we create by our self to use in step import certificate to CPI, Create folder SSL and copy file openssl.cnf into it, At folder OpenSSL run CMD by administrator, Create notepad and paste Host Key into it and set name file, Go to Connectivity Test in SAP CPI monitor. Learn how your comment data is processed. You can migrate your SAP file transfer workloads and SAP export files to S3 seamlessly by using a fully managed AWS SFTP service. After further analysis, I noticed that vendor generated their public key with size 3072. SAP HCI/CPI - Cloud Platform Integration: June 2020 - Blogger We have a requirement to connect multiple SFTP vendor using Public Key Authentication. If you have multiple accounts, use the Consolidation Tool to merge your content. It automatically creates an id_rsa file as type key pair. important is that the alias of the key imported into the keystore is id_rsa or id_dsa (depending on the key type). 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. To be able to establish a secure connection to an SFTP server, the host key of the SFTP server has to be available in a known hosts file in the Cloud Integration tenant. In SAP CPI monitoring view, choose Security material function. Copy the Host key for the SFTP from above screenshot should be deployed in the existing known_hosts file. Recommended configuration option for secure communication is public key authentication. Have you done this backup before doing your changes? Use the optopn 'Check Directory Access' to dig a bit deeper into the problem. Is there a planned timeline for this new enhancement release? This is possible now, see blog How to connect to an on-premise sftp server via Cloud Connector. Fortunately it's only one iflow impacted. The SSH test tries to establish a SSH connection to the SFTP server, but does not authenticate. Else the only option is to get the broken connection fixed with the new key. The general recommendation would be: if multiple messages are processed within the connection timeout of the sftp server the connection should be kept open. 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. Without it, you will lose your content and badges. Copyright | But eu1 ip range was whitelisted by customer as per the page --> https://help.sap.com/viewer/ea72206b834e4ace9cd834feed6c0e09/Cloud/en-US/d722f7cea9ec408b85db4c3dcba07b52.html.. Was there any change in the ip ranges? How to split a Big file ( Upto 50 MB) while using Sender SFTP adapter in CPI ? Errors during writing to the sftp server are shown in the, Convert ppk toOpenSSH key; e.g. In this whitepaper, you will find the following: To access this white paper, please refer to the following wiki: How to Connect from SAP Cloud Integration to On-Premise SFTP Server. If everything is setup correctly you will get a success message with Check Host Key using Public Key Authentication. All certificates and private key pairs contained in the tenant keystore are shown. Please let me know if there a way I can get the private key for id_rsa key pair. I have seen so many blogs but something am missing for connection establishment. Does setting this option mean you are just pinging the SFTP sever? Having done this, how can I successfully authenticate against the SFTP using the added key pair? Download Public OpenSSH Keywill create an .pubfilein the download directory. Thank you for the quick response. 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 adapte. This includes SAP file workloads between cloud apps, third-party applications, and on-premises solutions with this open, flexible, on-demand integration system running as a core service on the SAP Cloud Platform. Maybe the user does not have authorization to create files or does not have access rights? To test the connection, create an integration flow in SAP CPI between your preferred HTTPS tool and AWS SFTP. According to our operations colleagues there were no changes and the IP ranges documented are still valid. It helps. The steps given by you have been extremely useful. In this case IP/host name of the server should be public? Thanks for this very informative blog. 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. Thanks for this post. If so, you need SAP Universal ID. 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. If so, you need SAP Universal ID. Change), You are commenting using your Facebook account. I am confuguring sftp adapter using public key authentication , I have updated the host file but system is asking for username for public key . Visit SAP Support Portal's SAP Notes and KBA Search. As shown in the following workflow diagram, the known host file will store the SFTP public key, hostname, and public key algorithm. Save the public and private keys on your system. For this download the file from Manage Security Material viewavailable in the Operations View in Web in section Manage Security. Selecting the Connectivity Test tile from Overview Page will open the test tool offering tests for different protocols. You should use one private SSH key in CPI and distribute the public key to the sftp servers. "ssh-rsa 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 rsa-key-20200603", Key Fingerprint: "ssh-rsa 3072 64:a8:71:f9:dd:d0:2a:1a:e5:ce:f2:dd:5a:63:d3:2d". What would you recommend to resolve this problem since the SFTP account may have only one way of authentication? Thanks for the quick reply. Deploy the known_hosts file in the Manage Security Material Upload it by Browsing the known_hosts file and deploy it. I am trying to set Authentication dynamically. If you are using a different AWS SFTP endpoint, follow the same known host file configuration process shown in the previous SAP CPI known host file configuration. In case of errors you can use the connectivity tests for analysis, continue as described below. Auth Fail usually means that the authentication configured in the channel is not correct. Make sure the fingerprint of the downloaded host key is checked with the administrator of the sftp server. If so, you need SAP Universal ID. I would think this requirement might be quite common for integration customers. I was not able to find it. I can think of the ip whitelisting issue only. In a few months, SAP Universal ID will be the only option to login to SAP Community. then you can restore the keystore to the state before your changes. Terms of use | In a few months, SAP Universal ID will be the only option to login to SAP Community. 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 ". See the following example: ld2345.wdf.sap.corpssh-rsa AAAAB3NzaC1yc2EAAAo2pOx2ADnZ1WwtjW48=. Sorry for not being more specific, but Im working on a concur interface in CPI in, which this setup I need to access the Concur SFTP server manually (privatekey access only - without password) in order to get some neccessary encryption files that i need in setup of the iflow. 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. If the sftp server needs SSH2 format according to RFC 4716 you need to download the OpenSSH key andtransform it to an SSH2 public key with the ssh-keygen tool, which can for examplebe installedusing cygwin on Windows machines. NodeManager.deploysecuritycontent. For this select Type Constant. SFTP usernames must be created and provided to Customer Support before you request SSH access. Do you know how the private ssh key (id_rsa.cer) can be converted to a ppk format? To create the SSH Key open the Keystore Monitor available in the Operations View in Web in section Manage Security. For Directory, select the S3 directory associated with AWS SFTP server. I'm not sure if this is a coincidence, but when looking at SSH Key generation in CPI, up to size 2048 we have multiples of 64, then after 2048 it jumps to 4096. If so, you need SAP Universal ID. I also share how to test by Test Tool in SAP CPI. On an OpenSSH serverits done via adding itto the authorized_keys file in the .ssh directory. Yet I got error using both None and User/password and Key. If you have multiple accounts, use the Consolidation Tool to merge your content. 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. For User Name, enter kenny (AWS SFTP server user name created earlier). For this I created property SAP_FtpAuthMethod = user and deployed IFlow. Now I am trying to configure the SFTP folders using FileZilla client. Thank you replying. it's not possible yet, but it's planned. Also if you are using a third party sftp server make sure one of the supported key exchange algorithms of CPI are supported or your integration with the sftp adapter will fail.. ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1. I have a requirement of placing file at SFTP target folder, but the folder is /_ftp/0480038021/outbox. 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. 2) Indeed, id_rsa had not been created up to the point I send my questions. The user name has to be provided by the administrator of the sftp server. 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. In this case thesftp host keyis not checked, but it can becopied via Copy Host Key Button and added to the known hosts file as described in the above chapter. Generated their public key username send my questions I successfully authenticate against the SFTP servers as described.! 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