6:00 PM - Refreshments and networking.
6:30 PM - Introductions and announcements
6:40 PM - Cross-account S3 permissions
7:30 PM - Conclude presentation. Network till you drop.
8:00 PM - Vacate the premises
1. Cross-account S3 permissions using Bucket Snake (https://netflix-skunkworks.github.io/bucketsnake)
Bucket Snake aims to help alleviate cross-account S3 permissions by provisioning the proper IAM access that an application would need to access an S3 bucket.
Cross-account S3 access is challenging due to the permission model of S3. S3 has the concept of an "object owner" and a "bucket owner". When these are the same, S3 access is straightforward -- but when they are different, then access becomes challenging as you need to place ACLs on each and every object to permit new AWS accounts access. This becomes hard to scale. To resolve this, Bucket Snake will create app-specific IAM roles in the accounts that S3 buckets reside in. It permits the application AssumeRole access to those roles. The application then assumes those roles to perform the S3 access. This permanently resolves cross-account issues, as it enforces the same ownership for buckets and objects.
This consists of a Lambda function that creates all the roles, and a client that is aware of the role-assumption requirements.
Mike Grima is Senior Cloud Security Engineer at Netflix. He works on the Security Tools and Operations Team and develop solutions to implementing security on Netflix's very large AWS infrastructure.
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