I want my AWS Transfer Family server to access an Amazon Simple Storage Service (Amazon S3) bucket in another AWS account. How can I set up my server with cross-account access to the bucket?
Short description
Follow these steps:
- Create an AWS Identity and Access Management (IAM) role with access to the bucket.
- Update the bucket policy to grant cross-account access to the IAM role.
- Create a Transfer Family server user that's configured with the IAM role.
- Verify that your Transfer Family server user can access the bucket.
- (Optional) Set S3 Object Ownership to bucket owner preferred.
Note: The AWS Transfer Family console shows you only S3 buckets in the same account. To use your Transfer Family server with a bucket in another account, you must use the AWS Command Line Interface (AWS CLI) or an AWS SDK.
Transmit the file dropped in the source S3 bucket to the FTP host; Take a backup of the data in the destination S3 bucket; Delete the file dropped in the source S3 bucket; SFTP. Steps for creating S3 buckets is all same at that of the procedure described in FTP section. I am trying to use the paramiko and boto3 libraries in Python to transfer files from a S3 bucket to an Unix server. Currently I am able to achieve this by bringing the file to local by using the download method. Then i will use the ftp client to upload the file to Unix server. FTP/S, SFTP, Dropbox, Google Drive, Amazon S3, Azure Blob, Box. Various file transfer modes. You can backup, move and synchronize files easily between any two of. Folks, I've setup an SFTP server on an EC2 instance to receive files from remote customers that need to send 3 files each, several times throughout the day (each customer connects multiple times a day, each time transferring the 3 files which keep their names but change their contents). The transferfilefromftptos3 function takes a bunch of arguments, most of which are self explanatory. Ftpfilepath is the path from the root directory of the ftp server to the file, with.
Resolution
Create an IAM role with access to the bucket
Create an IAM role for your server users. For the role's IAM policy, use the following:
Note: Replace destination-DOC-EXAMPLE-BUCKET with the name of the S3 bucket that you want your server to access.
After you create the IAM role, get the role's ID by running the get-role command, similar to the following:
Windows File Transfer Sftp
You need the role ID for the next step.
Update the bucket policy to grant cross-account access to the IAM role
Modify the destination bucket's policy to grant access to the IAM role that you created. You can use a bucket policy similar to the following:
Note: Replace arn:aws:iam::123456789012:root with the Amazon Resource Name (ARN) of the account that your server belongs to. Replace destination-DOC-EXAMPLE-BUCKET with the name of the bucket. Replace AROA1234567890 with the role ID of the IAM role that you created.
The Condition element in this example policy is optional. Include the Condition element to grant bucket access only to the IAM role that you specify. Or, remove the element to grant access to all IAM roles and users from the account that your server belongs to.
Create a Transfer Family server user configured with the IAM role
1. Generate SSH keys for your Transfer Family server.
2. Get the server ID of your server.
3. Run the create-user command using the AWS CLI. For --server-id, enter the ID of your server. For --role, enter the ARN of the IAM role that you created. For --ssh-public-key-body, enter the contents of the .pub file that you generated when you created SSH keys.
Transfer Files From Ftp Server To Ftp Server
Note: If you receive errors when running AWS CLI commands, make sure that you’re using the most recent version of the AWS CLI.
The command returns the server ID and the user that you created:
Important: To limit the server user's access to only its home directory, create a scope-down policy in IAM. Then, edit the server user's properties to apply the scope-down policy that you created.
Verify that your Transfer Family server user can access the bucket
1. Connect to your server as the user that you created. For example, this OpenSSH command connects to an SFTP server:
2. As a test, list the home directory of the bucket. If you're using OpenSSH, run this command:
If the command returns the home directory, then your server user has cross-account access to the bucket.
(Optional) Set S3 Object Ownership to bucket owner preferred
By default, an Amazon S3 object is owned by the AWS account that uploaded the object. This means that the objects uploaded to the destination bucket are owned by the source server's account by default.
To enable the destination account to automatically own objects from cross-account uploads, set the destination bucket's S3 Object Ownership to bucket owner preferred. After you do this, all new objects uploaded through the AWS Transfer Family server are automatically owned by the destination bucket's account.
Related information
CreateUser (AWS Transfer Family User Guide)
Add a user (AWS Transfer Family User Guide)
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Simple and seamless file transfer to Amazon S3 and Amazon EFS using SFTP, FTPS, and FTP
The AWS Transfer Family provides fully managed support for file transfers directly into and out of Amazon S3 or Amazon EFS. With support for Secure File Transfer Protocol (SFTP), File Transfer Protocol over SSL (FTPS), and File Transfer Protocol (FTP), the AWS Transfer Family helps you seamlessly migrate your file transfer workflows to AWS by integrating with existing authentication systems, and providing DNS routing with Amazon Route 53 so nothing changes for your customers and partners, or their applications. With your data in Amazon S3 or Amazon EFS, you can use it with AWS services for processing, analytics, machine learning, archiving, as well as home directories and developer tools. Getting started with the AWS Transfer Family is easy; there is no infrastructure to buy and set up.
Benefits
Easily and seamlessly modernize your file transfer workflows. File exchange over SFTP, FTPS, and FTP is deeply embedded in business processes across many industries like financial services, healthcare, telecom, and retail. They use these protocols to securely transfer files like stock transactions, medical records, invoices, software artifacts, and employee records. The AWS Transfer Family lets you preserve your existing data exchange processes while taking advantage of the superior economics, data durability, and security of Amazon S3 or Amazon EFS. With just a few clicks in the AWS Transfer Family console, you can select one or more protocols, configure Amazon S3 buckets or Amazon EFS file systems to store the transferred data, and set up your end user authentication by importing your existing end user credentials, or integrating an identity provider like Microsoft Active Directory or LDAP. End users can continue to transfer files using existing clients, while files are stored in your Amazon S3 bucket or Amazon EFS file system.
No servers to manage
You no longer have to purchase and run your own SFTP, FTPS, or FTP servers and storage to securely exchange data with partners and customers. The AWS Transfer Family manages your file infrastructure for you, which includes auto-scaling capacity and maintaining high availability with a multi-AZ architecture.
Seamless migrations
The AWS Transfer Family is fully compatible with the SFTP, FTPS, and FTP standards and connects directly with your identity provider systems like Active Directory, LDAP, Okta, and others. For you, this means you can migrate file transfer workflows to AWS without changing your existing authentication systems, domain, and hostnames. Your external customers and partners can continue to exchange files with you, without changing their applications, processes, client software configurations, or behavior.
Works natively with AWS services
The service stores the data in Amazon S3 or Amazon EFS, making it easily available for you to use AWS services for processing and analytics workflows, unlike third party tools that may keep your files in silos. Native support for AWS management services simplifies your security, monitoring, and auditing operations.
How it works
Get a hands-on understanding of how the AWS Transfer Family can help address your file transfer challenges by watching this quick demo.
Use cases
Sharing and receiving files internally and with third parties
Secure Ftp File Transfer
Exchanging files internally within an organization or externally with third parties are a critical part of many business workflows. This file sharing needs to be done securely, whether you are transferring large technical documents for customers, media files for a marketing agency, research data, or invoices from suppliers. To seamlessly migrate from existing infrastructure, the AWS Transfer Family provides protocol options, integration with existing identity providers, and network access controls, so there are no changes to your end users. The AWS Transfer Family makes it easy to support recurring data sharing processes, as well as one-off secure file transfers, whichever suits your business needs.
Data distribution made secure and easy
Providing value added data is a core part of many big data and analytics organizations. This requires being able to easily provide accessibility to your data, while doing it in a secure way. The AWS Transfer Family offers multiple protocols to access data in Amazon S3 or Amazon EFS, and provides access control mechanisms and flexible folder structures that help you dynamically decide who gets access to what and how. You also no longer need to worry about managing the scale in growth of your data sharing business as the service provides built-in real-time scaling and high availability capabilities for secure and timely transfers of data.
Ecosystem data lakes
Whether you are part of a life sciences organization or an enterprise running business critical analytics workloads in AWS, you may need to rely on third parties to send you structured or unstructured data. With the AWS Transfer Family, you can set up up your partner teams to transfer data securely into your Amazon S3 bucket or Amazon EFS file system over the chosen protocols. You can then apply the AWS portfolio of analytics and machine learning capabilities on the data to advance your research projects. You can do all this without buying more hardware to run storage and compute on-premises.
Customers
Customers are using AWS Transfer for SFTP, AWS Transfer for FTPS, and AWS Transfer for FTP for a variety of uses cases. Visit the customers page to read about their experiences.
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