AWS SDK Version 3 for .NET
API Reference

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Modifies the set of security groups in effect for a mount target.

When you create a mount target, Amazon EFS also creates a new network interface. For more information, see CreateMountTarget. This operation replaces the security groups in effect for the network interface associated with a mount target, with the SecurityGroups provided in the request. This operation requires that the network interface of the mount target has been created and the lifecycle state of the mount target is not deleted.

The operation requires permissions for the following actions:


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

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


public virtual ModifyMountTargetSecurityGroupsResponse ModifyMountTargetSecurityGroups(
         ModifyMountTargetSecurityGroupsRequest request
Type: Amazon.ElasticFileSystem.Model.ModifyMountTargetSecurityGroupsRequest

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

Return Value
The response from the ModifyMountTargetSecurityGroups service method, as returned by ElasticFileSystem.


BadRequestException Returned if the request is malformed or contains an error such as an invalid parameter value or a missing required parameter.
IncorrectMountTargetStateException Returned if the mount target is not in the correct state for the operation.
InternalServerErrorException Returned if an error occurred on the server side.
MountTargetNotFoundException Returned if there is no mount target with the specified ID found in the caller's account.
SecurityGroupLimitExceededException Returned if the size of SecurityGroups specified in the request is greater than five.
SecurityGroupNotFoundException Returned if one of the specified security groups doesn't exist in the subnet's VPC.


This operation modifies the security groups associated with a mount target for a file system.

To modify the security groups associated with a mount target for a file system

var response = client.ModifyMountTargetSecurityGroups(new ModifyMountTargetSecurityGroupsRequest 
    MountTargetId = "fsmt-12340abc",
    SecurityGroups = new List {


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