AWS SDK for .NET Documentation
AuthorizeClusterSecurityGroupIngress Method (request)
AmazonAmazon.RedshiftAmazonRedshiftAuthorizeClusterSecurityGroupIngress(AuthorizeClusterSecurityGroupIngressRequest) Did this page help you?   Yes   No    Tell us about it...
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 EC2 instance, you can authorize inbound access to either a Classless Interdomain Routing (CIDR) IP address range or an EC2 security group. You can add as many as 20 ingress rules to an Amazon Redshift security group.
Note:
The EC2 security group must be defined in the AWS region where the cluster resides.

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 Management Guide.

Declaration Syntax
Parameters
request (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.
Exceptions
ExceptionCondition
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
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Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)