AWS "one-liners": Configure AWS password policy in one shot

"As soon as you have passwords you need a password policy" - © captain obvious

Limitations:
AWS allows you to have only one password policy for whole AWS account.

You can configure it using web GUI or, if you prefer to have all your infrastructure and security as code, using boto and python:

#!/usr/bin/python

import boto3
import pprint

boto3.setup_default_session(profile_name='staging')
iam=boto3.resource('iam')
account_password_policy = iam.AccountPasswordPolicy()
response = account_password_policy.update(
    MinimumPasswordLength=12,
    RequireSymbols=True,
    RequireNumbers=True,
    RequireUppercaseCharacters=True,
    RequireLowercaseCharacters=True,
    AllowUsersToChangePassword=True,
    MaxPasswordAge=90,
    PasswordReusePrevention=12,
    HardExpiry=False
)

pprint.pprint(response)

You can find more details about particular password policy parameters here:

http://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_passwords_account-policy.html