Namespace Amazon.Auth.AccessControlPolicy
Classes
- ActionIdentifier
An access control policy action identifies a specific action in a service that can be performed on a resource. For example, sending a message to a queue.
ActionIdentifiers allow you to limit what your access control policy statement affects. For example, you could create a policy statement that enables a certain group of users to send messages to your queue, but not allow them to perform any other actions on your queue.
The action is B in the statement "A has permission to do B to C where D applies."
Free form access control policy actions may include a wildcard (*) to match multiple actions.
Constants for known actions can be found in the Amazon.Auth.AccessControlPolicy.ActionIdentifiers namespace.
- Condition
AWS access control policy conditions are contained in Statement objects, and affect when a statement is applied. For example, a statement that allows access to an Amazon SQS queue could use a condition to only apply the effect of that statement for requests that are made before a certain date, or that originate from a range of IP addresses.
Multiple conditions can be included in a single statement, and all conditions must evaluate to true in order for the statement to take effect.
The set of conditions is D in the statement "A has permission to do B to C where D applies."
A condition is composed of three parts:
- ConditionFactory
A factory for creating conditions to be used in the policy.
- Policy
An AWS access control policy is a object that acts as a container for one or more statements, which specify fine grained rules for allowing or denying various types of actions from being performed on your AWS resources.
By default, all requests to use your resource coming from anyone but you are denied. Access control polices can override that by allowing different types of access to your resources, or by explicitly denying different types of access.
Each statement in an AWS access control policy takes the form: "A has permission to do B to C where D applies".
Note that an AWS access control policy should not be confused with the similarly named "POST form policy" concept used in Amazon S3.
- Principal
A principal is an AWS account which is being allowed or denied access to a resource through an access control policy. The principal is a property of the Statement object, not directly the Policy object.
The principal is A in the statement "A has permission to do B to C where D applies."
In an access control policy statement, you can set the principal to all authenticated AWS users through the AllUsers member. This is useful when you don't want to restrict access based on the identity of the requester, but instead on other identifying characteristics such as the requester's IP address.
- Resource
Represents a resource involved in an AWS access control policy statement. Resources are the service specific AWS entities owned by your account. Amazon SQS queues, Amazon S3 buckets and objects, and Amazon SNS topics are all examples of AWS resources.
The standard way of specifying an AWS resource is with an Amazon Resource Name (ARN).
The resource is C in the statement "A has permission to do B to C where D applies."
- ResourceFactory
A factory for creating resources to be used in the policy.
- Statement
A statement is the formal description of a single permission, and is always contained within a policy object.
A statement describes a rule for allowing or denying access to a specific AWS resource based on how the resource is being accessed, and who is attempting to access the resource. Statements can also optionally contain a list of conditions that specify when a statement is to be honored.
For example, consider a statement that:
There are many resources and conditions available for use in statements, and you can combine them to form fine grained custom access control polices.
Enums
- ConditionFactory.ArnComparisonType
Enumeration of the supported ways an ARN comparison can be evaluated.
- ConditionFactory.DateComparisonType
Enumeration of the supported ways a date comparison can be evaluated.
- ConditionFactory.IpAddressComparisonType
Enumeration of the supported ways an IP address comparison can be evaluated.
- ConditionFactory.NumericComparisonType
Enumeration of the supported ways a numeric comparison can be evaluated
- ConditionFactory.StringComparisonType
Enumeration of the supported ways a string comparison can be evaluated.
- Statement.StatementEffect
The effect is the result that you want a policy statement to return at evaluation time. A policy statement can either allow access or explicitly deny access.