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Virtual Private Cloud:CreateSslVpnServer

Last Updated:Dec 01, 2023

Creates an SSL server.

Operation Description

  • CreateSslVpnServer is an asynchronous operation. After a request is sent, the system returns a request ID and runs the task in the background. You can call the DescribeVpnGateway operation to query the status of the task.

    • If the VPN gateway is in the updating state, the SSL server is being created.
    • If the VPN gateway is in the active state, the SSL server is created.
  • You cannot repeatedly call the CreateSslVpnServer operation for the same VPN gateway within the specified period of time.


You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.


Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

  • Operation: the value that you can use in the Action element to specify the operation on a resource.
  • Access level: the access level of each operation. The levels are read, write, and list.
  • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
    • The required resource types are displayed in bold characters.
    • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
  • Condition Key: the condition key that is defined by the cloud service.
  • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
OperationAccess levelResource typeCondition keyAssociated operation
  • SslVpnServer
  • VpnGateway

Request parameters


The client token that is used to ensure the idempotence of the request.

You can use the client to generate the token, but you must make sure that the token is unique among different requests. The token can contain only ASCII characters.

Note If you do not specify this parameter, the system automatically uses the request ID as the client token. The request ID may be different for each request.

The region ID of the VPN gateway.

You can call the DescribeRegions operation to query the most recent region list.


The ID of the VPN gateway.


The SSL server name.

The name must be 1 to 100 characters in length and cannot start with http:// or https://.


The client CIDR block.

The client CIDR block from which an IP address is allocated to the virtual network interface controller (NIC) of the client. It is not the CIDR block where the client resides.

When the client accesses the local virtual private cloud (VPC) by using an SSL-VPN connection, the VPN gateway allocates an IP address from the client CIDR block to the client.

Note This CIDR block cannot overlap with the CIDR block specified by LocalSubnet.

The local CIDR block.

The CIDR block to be accessed by the client by using the SSL-VPN connection.

This value can be the CIDR block of a VPC, a vSwitch, a data center that is connected to a VPC by using an Express Connect circuit, or an Alibaba Cloud service such as Object Storage Service (OSS).

The protocol that is used by the SSL server. Valid values:

  • TCP (default)
  • UDP

The encryption algorithm that is used for the SSL-VPN connection. Valid values:

  • AES-128-CBC (default)
  • AES-192-CBC
  • AES-256-CBC
  • none

The port that is used by the SSL server. Valid values of port numbers: 1 to 65535. Default value: 1194.

The following ports are not supported: 22, 2222, 22222, 9000, 9001, 9002, 7505, 80, 443, 53, 68, 123, 4510, 4560, 500, and 4500.


Specifies whether to enable data compression. Valid values:

  • true
  • false (default)

Specifies whether to enable two-factor authentication. If you enable two-factor authentication, you must also specify an IDaaS instance ID. Valid values:

  • true
  • false (default)
  • Two-factor authentication supports only IDaaS instances of earlier versions. If you do not have and cannot create IDaaS instances of earlier versions, you cannot enable two-factor authentication.
  • For existing SSL servers, if two-factor authentication is already enabled, you can continue to use two-factor authentication.
  • false

    The Identity as a Service (IDaaS) instance ID.


    The ID of the region where the IDaaS instance is created.


    Response parameters


    The ID of the SSL server.


    The request ID.


    The SSL server name.



    Sample success responses


      "SslVpnServerId": "vss-bp18q7hzj6largv4v****",
      "RequestId": "E98A9651-7098-40C7-8F85-C818D1EBBA85",
      "Name": "test"

    Error codes

    HTTP status codeError codeError messageDescription
    400Resource.QuotaFullThe quota of resource is fullThe resource quota is exhausted.
    400InvalidNameThe name is not validThe name format is invalid.
    400VpnGateway.ConfiguringThe specified service is configuring.The service is being configured. Try again later.
    400VpnGateway.FinancialLockedThe specified service is financial locked.The service is suspended due to overdue payments. Top up your account first.
    400SslVpnServer.AlreadyExistThe SSL VPN server of specified vpn gateway already exists.The specified SSL server already exists on the VPN gateway.
    400VpnRouteEntry.ConflictThe specified route entry has conflict.Route conflicts exist.
    400IpConflictClient IP pool conflict with local IP range.The client IP pool conflicts with the local IP range.
    400IpConflictClient IP pool conflict with other SSL VPN server in the same VPC.The client IP address pool conflicts with SSL servers in the same VPC.
    400SslVpnServer.AddRouteErrorAdd route error whose destination is client IP pool, please check vpc route entry and relevant quota.The system failed to add the route that points to the client CIDR block. View the VPC route and quota.
    400ClientIpPool.NetmaskInvalidThe netmask length of client IP pool must be greater than or equal to 16 and less than or equal to 29.The subnet mask of the client IP pool must range from 16 to 29.
    400ClientIpPool.SubnetInvalidThe specified client IP pool cannot be used.The client CIDR block is unavailable.
    400MissingParameter.IDaaSInstanceIdThe input parameter IDaaSInstanceId is mandatory when enable multi-factor authentication.You must set the IDaaSInstanceId parameter when you enable two-factor authentication.
    400OperationFailed.NoRamPermissionVpn Service has no permission to operate your IDaaS instances.The VPN service does not have the permissions to manage your IDaaS instance.
    400OperationUnsupported.NotSupportMultiFactorAuthCurrent version of the VPN does not support multi-factor authentication.-
    400QuotaExceeded.VpnRouteEntryThe number of route entries to the VPN gateway in the VPC routing table has reached the quota limit.The number of route entries to the VPN gateway in the VPC routing table has reached the quota limit.
    400SystemBusyThe system is busy. Please try again later.The system is busy. Please try again later.
    400SslVpnServerPort.IllegalThe server port is not in the range of [1-65535].The port of the SSL-VPN server must be from 1 to 65535.
    400EnableHaCheck.SslVpnServerClientCidrContainsVpcRouteDestSsl vpn client cidr contains vpc route prefix. The vpc route prefix is %s.The prefix %s in the VPC route table falls within the CIDR block of the SSL client.
    400VpnGateway.SslVpnDisabledThe VPN gateway has not enabled SSL VPN.The SSL-VPN feature is disabled for the VPN gateway.
    400IllegalParam.LocalSubnetThe specified "LocalSubnet" (%s) is invalid.The specified "LocalSubnet" (%s) is invalid.
    403Forbbiden.SubUserUser not authorized to operate on the specified resource as your account is created by another user.You are unauthorized to perform this operation on the specified resource. Acquire the required permissions and try again.
    403ForbiddenUser not authorized to operate on the specified resource.You do not have the permissions to manage the specified resource. Apply for the permissions and try again.
    404InvalidRegionId.NotFoundThe specified region is not found during access authentication.The specified area is not found during authentication.
    404InvalidVpnGatewayInstanceId.NotFoundThe specified vpn gateway instance id does not exist.The specified VPN gateway does not exist. Check whether the specified VPN gateway is valid.
    404InvalidIDaaSInstanceId.NotFoundThe specified IDaaS instance ID does not exist.The specified IDaaS instance does not exist.

    For a list of error codes, visit the Service error codes.

    Change history

    Change timeSummary of changesOperation
    2023-10-19API Description Update,The API operation is not deprecated.,The error codes of the API operation change.see changesets
    Change itemChange content
    API DescriptionAPI Description Update
    API Deprecation DescriptionThe API operation is not deprecated.
    Error CodesThe error codes of the API operation change.
      Error Codes 400 change
      Error Codes 404 change
      delete Error Codes: 403
    2023-05-30The error codes of the API operation change.see changesets
    Change itemChange content
    Error CodesThe error codes of the API operation change.
      Error Codes 400 change
      delete Error Codes: 403
      delete Error Codes: 404