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Include IAM policies in a nutshell

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Corey Quinn 2017-04-14 20:30:01 -07:00
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@ -561,6 +561,7 @@ We cover security basics first, since configuring user accounts is something you
- 📜 Access keys that start with AKIA are normal keys. Access keys that start with ASIA are session/temporary keys from STS, and will require an additional "SessionToken" parameter to be sent along with the id and secret. - 📜 Access keys that start with AKIA are normal keys. Access keys that start with ASIA are session/temporary keys from STS, and will require an additional "SessionToken" parameter to be sent along with the id and secret.
- [**Multi-factor authentication (MFA)**](https://aws.amazon.com/iam/details/mfa/), which is the highly recommended practice of using a keychain fob or smartphone app as a second layer of protection for user authentication. - [**Multi-factor authentication (MFA)**](https://aws.amazon.com/iam/details/mfa/), which is the highly recommended practice of using a keychain fob or smartphone app as a second layer of protection for user authentication.
- IAM allows complex and fine-grained control of permissions, dividing users into groups, assigning permissions to roles, and so on. There is a [policy language](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html) that can be used to customize security policies in a fine-grained way. - IAM allows complex and fine-grained control of permissions, dividing users into groups, assigning permissions to roles, and so on. There is a [policy language](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html) that can be used to customize security policies in a fine-grained way.
- An excellent high level overview of IAM policy concepts lives at [IAM Policies In A Nutshell](http://start.jcolemorrison.com/aws-iam-policies-in-a-nutshell/).
- 🔸The policy language has a complex and error-prone JSON syntax that’s quite confusing, so unless you are an expert, it is wise to base yours off trusted examples or AWS’ own pre-defined [managed policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_managed-vs-inline.html). - 🔸The policy language has a complex and error-prone JSON syntax that’s quite confusing, so unless you are an expert, it is wise to base yours off trusted examples or AWS’ own pre-defined [managed policies](https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies_managed-vs-inline.html).
- At the beginning, IAM policy may be very simple, but for large systems, it will grow in complexity, and need to be managed with care. - At the beginning, IAM policy may be very simple, but for large systems, it will grow in complexity, and need to be managed with care.
- 🔹Make sure one person (perhaps with a backup) in your organization is formally assigned ownership of managing IAM policies, make sure every administrator works with that person to have changes reviewed. This goes a long way to avoiding accidental and serious misconfigurations. - 🔹Make sure one person (perhaps with a backup) in your organization is formally assigned ownership of managing IAM policies, make sure every administrator works with that person to have changes reviewed. This goes a long way to avoiding accidental and serious misconfigurations.