AWS SDK Version 3 for .NET
API Reference

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Adds an inbound (ingress) rule to an Amazon Redshift security group. Depending on whether the application accessing your cluster is running on the Internet or an Amazon EC2 instance, you can authorize inbound access to either a Classless Interdomain Routing (CIDR)/Internet Protocol (IP) range or to an Amazon EC2 security group. You can add as many as 20 ingress rules to an Amazon Redshift security group.

If you authorize access to an Amazon EC2 security group, specify EC2SecurityGroupName and EC2SecurityGroupOwnerId. The Amazon EC2 security group and Amazon Redshift cluster must be in the same AWS region.

If you authorize access to a CIDR/IP address range, specify CIDRIP. For an overview of CIDR blocks, see the Wikipedia article on Classless Inter-Domain Routing.

You must also associate the security group with a cluster so that clients running on these IP addresses or the EC2 instance are authorized to connect to the cluster. For information about managing security groups, go to Working with Security Groups in the Amazon Redshift Cluster Management Guide.


For .NET Core and PCL this operation is only available in asynchronous form. Please refer to AuthorizeClusterSecurityGroupIngressAsync.

Namespace: Amazon.Redshift
Assembly: AWSSDK.Redshift.dll
Version: 3.x.y.z


public abstract AuthorizeClusterSecurityGroupIngressResponse AuthorizeClusterSecurityGroupIngress(
         AuthorizeClusterSecurityGroupIngressRequest request
Type: Amazon.Redshift.Model.AuthorizeClusterSecurityGroupIngressRequest

Container for the necessary parameters to execute the AuthorizeClusterSecurityGroupIngress service method.

Return Value
The response from the AuthorizeClusterSecurityGroupIngress service method, as returned by Redshift.


AuthorizationAlreadyExistsException The specified CIDR block or EC2 security group is already authorized for the specified cluster security group.
AuthorizationQuotaExceededException The authorization quota for the cluster security group has been reached.
ClusterSecurityGroupNotFoundException The cluster security group name does not refer to an existing cluster security group.
InvalidClusterSecurityGroupStateException The state of the cluster security group is not available.


This example authorizes access to a named Amazon EC2 security group.

To authorize access to an EC2 Security Group

var response = client.AuthorizeClusterSecurityGroupIngress(new AuthorizeClusterSecurityGroupIngressRequest 
    ClusterSecurityGroupName = "mysecuritygroup",
    EC2SecurityGroupName = "myec2securitygroup",
    EC2SecurityGroupOwnerId = "123445677890"


Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also