AWS SDK Version 3 for .NET
API Reference

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Adds the specified inbound (ingress) rules to a security group.

An inbound rule permits instances to receive traffic from the specified IPv4 or IPv6 CIDR address range, or from the instances that are associated with the specified destination security groups. When specifying an inbound rule for your security group in a VPC, the IpPermissions must include a source for the traffic.

You specify a protocol for each rule (for example, TCP). For TCP and UDP, you must also specify the destination port or port range. For ICMP/ICMPv6, you must also specify the ICMP/ICMPv6 type and code. You can use -1 to mean all types or all codes.

Rule changes are propagated to instances within the security group as quickly as possible. However, a small delay might occur.

For more information about VPC security group quotas, see Amazon VPC quotas.

We are retiring EC2-Classic. We recommend that you migrate from EC2-Classic to a VPC. For more information, see Migrate from EC2-Classic to a VPC in the Amazon Elastic Compute Cloud User Guide.


This is an asynchronous operation using the standard naming convention for .NET 4.5 or higher. For .NET 3.5 the operation is implemented as a pair of methods using the standard naming convention of BeginAuthorizeSecurityGroupIngress and EndAuthorizeSecurityGroupIngress.

Namespace: Amazon.EC2
Assembly: AWSSDK.EC2.dll
Version: 3.x.y.z


public virtual Task<AuthorizeSecurityGroupIngressResponse> AuthorizeSecurityGroupIngressAsync(
         AuthorizeSecurityGroupIngressRequest request,
         CancellationToken cancellationToken


Type: Amazon.EC2.Model.AuthorizeSecurityGroupIngressRequest

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

Type: System.Threading.CancellationToken

A cancellation token that can be used by other objects or threads to receive notice of cancellation.

Return Value

The response from the AuthorizeSecurityGroupIngress service method, as returned by EC2.

Version Information

.NET Core App:
Supported in: 3.1

.NET Standard:
Supported in: 2.0

.NET Framework:
Supported in: 4.5

See Also