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We have our REST API running on AWS Elastic Beanstalk (NodeJS/Linux), there are some legacy devices that their only way to communicate with the world is uploading a file using FTP.

These devices would upload a file to FTP(s)://ftp.example.com, the file is processed generating some output (updates stuff using the API), then stored to S3

So I was thinking about this setup:

  • EC2 instance running a custom upload-only FTP server (looked at this one but seems outdated)
  • This instance makes the file processing, saves it to S3 and then calls the existing API so it does some other stuff
  • Hosted zone (in Route53) routes the ftp.example.com traffic to the EC2 instance

Upload only means that the device won't need other features like listing or downloading files.

Is this setup viable?, I haven't started coding/configuring it, and some of my assumptions may be infeasible, especially regarding the "FTP server" and routing that protocol in Route53

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This setup is possible. You can create an A- Record to point your domain to EC2. Please follow this link : https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-to-ec2-instance.html

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  • What about active/passive transmission? How will the EC2 instance be able to open new ports without AWS knowing?
    – marstato
    Commented Jul 28, 2018 at 11:19
  • You can have some pre-defined inbound/outbound rules applied to security groups and attach that security group to your EC2 container.
    – Kunal
    Commented Jul 28, 2018 at 13:32

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