ModifyForwardEntry - Virtual Private Cloud - Alibaba Cloud Documentation Center

Modifies a DNAT entry.

Operation description

ModifyForwardEntry 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 DescribeForwardTableEntries operation to query the status of the task.
- Pending: indicates that the system is modifying the DNAT entry. You can only query the DNAT entry, but cannot perform other operations.
- Available: indicates that the DNAT entry is modified.
You cannot repeatedly call the ModifyForwardEntry operation to modify a DNAT entry within the specified period of time.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

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.

Operation	Access level	Resource type	Condition key	Associated operation
vpc:ModifyForwardEntry	update	ForwardTable acs:vpc:{#regionId}:{#accountId}:forwardtable/{#ForwardTableId}	none	none

Request parameters

Parameter	Type	Required	Description	Example
ForwardTableId	string	Yes	The ID of the DNAT table to which the DNAT entry belongs.	ftb-8vbx8xu2lqj9qb334****
ForwardEntryId	string	Yes	The ID of the DNAT entry.	fwd-8vbn3bc8roygjp0gy****
ExternalIp	string	No	When you modify DNAT entries of Internet NAT gateways, this parameter specifies the elastic IP addresses (EIPs) that are used to access the Internet. When you modify DNAT entries of Virtual Private Cloud (VPC) NAT gateways, this parameter specifies the NAT IP addresses that are accessed by external networks.	116.85.XX.XX
ExternalPort	string	No	The external port that is used to forward traffic when you modify DNAT entries of Internet NAT gateways. Valid values: 1 to 65535. If you want to modify the port range, separate port numbers with a forward slash (/), such as `10/20`. If you need to modify ExternalPort and InternalPort at the same time, and ExternalPort specifies a port range, make sure that InternalPort also specifies a port range, and both ranges specify the same number of ports. For example, you can set ExternalPort to `10/20` and InternalPort to `80/90`. The port that is accessed by external networks when you modify DNAT entries of VPC NAT gateways. Valid values: 1 to 65535.	80
InternalIp	string	No	The private IP address of the ECS instance that uses DNAT entries to communicate with the Internet when you modify DNAT entries of Internet NAT gateways. The private IP address that uses DNAT entries to communicate when you modify DNAT entries of VPC NAT gateways.	10.0.0.78
InternalPort	string	No	The internal port or port range that is used to forward traffic when you modify DNAT entries of Internet NAT gateways. Valid values: 1 to 65535. The port of the destination ECS instance to be mapped when you modify DNAT entries of VPC NAT gateways. Valid values: 1 to 65535.	80
IpProtocol	string	No	The protocol. Valid values: TCP UDP Any	TCP
ForwardEntryName	string	No	The new name of the DNAT entry. The name must be 2 to 128 characters in length. It must start with a letter but cannot start with `http://` or `https://`.	test
RegionId	string	Yes	The region ID of the NAT gateway. You can call the DescribeRegions operation to query the most recent region list.	cn-hangzhou
ClientToken	string	No	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 client 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.	123e4567-e89b-12d3-a456-426655440000
PortBreak	boolean	No	Specifies whether to remove limits on the port range. Valid values: true false If an SNAT entry and a DNAT entry use the same public IP address, and you want to specify a port number greater than `1024`, set `PortBreak` to `true`.	false

Response parameters

Parameter	Type	Description	Example
	object	The request ID.
RequestId	string	The request ID.	2315DEB7-5E92-423A-91F7-4C1EC9AD97C3

Examples

Sample success responses

JSONformat

{
  "RequestId": "2315DEB7-5E92-423A-91F7-4C1EC9AD97C3"
}

Error codes

HTTP status code	Error code	Error message	Description
400	UnsupportedFeature.PortSegment	The feature of PortSegment is not supported.	-
400	ExclusiveParam.%sAnd%s	The param of %s and %s are mutually exclusive.	You cannot specify %s and %s at the same time.
400	InvalidIp.NotInNatgw	The specified Ip not belong to natgateway.	The specified EIP is not associated with the NAT gateway.
400	DuplicatedParam.InternalPort	The param of %s is duplicated.	Duplicate parameters are specified for %s.
400	DuplicatedParam.ExternalPort	The param of %s is duplicated.	Duplicate parameters are specified for %s.
400	OperationFailed.AnyPortConfig	Operation failed because any port correspondence any protocol	The operation failed because any port corresponds to any protocol.
400	OperationUnsupported.ForwardEntry	Duplicated destination ip port is unsupported.	You cannot specify duplicate destination IP addresses or destination ports.
400	IncorrectStatus.NatIp	The status of %s [%s] is incorrect.	The status of NatIp is incorrect.
400	Forbidden.IpHasBeenUsedInSnat	The source ip can't be used. Because it has been used in snat.	-
400	IncorrectStatus.ForwardEntry	The status of %s [%s] is incorrect.	The DNAT entry to be deleted is in an invalid state.
400	InvalidExternalIp.Malformed	The specified ExternalIp is not a valid IP address.	The specified EIP is invalid.
400	InvalidInternalIp.Malformed	The specified InternalIp is not a valid IP address.	The specified destination private IP address is invalid.
400	InvalidExternalPort.Malformed	The specified ExternalPort is not a valid port.	The specified public port is invalid.
400	InvalidInternalPort.Malformed	The specified InternalPort is not a valid port.	The specified private port is invalid.
400	Forbidden.DestnationIpOutOfVpcCIDR	The specified Destination Ip is Out of VPC CIDR.	The specified private IP address does not fall within the CIDR block of the VPC. Enter a private IP address that falls within the CIDR block of the VPC.
400	Forbidden.DestinationIpOutOfVswitchCIDR	The specified Internal Ip is Out of VSwitch CIDR.	-
400	InvalidProtocal.ValueNotSupported	The specified IpProtocol does not support.	The specified protocol is not supported.
400	IncorretForwardEntryStatus	Some Forward entry status blocked this operation..	The operation is not supported because one or more DNAT entries in the DNAT table are in the Pending or Modifying state.
400	QuotaExceeded	Forward entry quota exceeded in this route table.	A route table can only have 200 custom route entries at most.
400	ForwardEntry.Duplicated	The specified ExternalIp, IpProtocol, ExternalPort,InternalIp, InternalPort is duplicated	-
400	Forbidden.ExternalIp.UsedInSnatTable	The specified ExternalIp is already used in SnatTable	The specified EIP is already used by an SNAT entry. Select a different EIP or delete the SNAT entry.
400	Forbidden.Already.Bounded	The specified instance already bounded	The specified instance is associated.
400	InvalidIp.NotFound	The specified ip does not exist.	-
400	InvalidParameter.Name.Malformed	The specified Name is not valid.	The specified name format is invalid. Enter the name in the valid format.
400	IncorretForwardEntryStatus	The Specified forwardEntry is not stable status, can not operation	-
400	IncorretStatus.ForwardEntry	The Specified forwardEntry is not stable status, can not operation	-
400	IllegalParam.AnyPortNotZero	Any port port must be zero.	You must set the destination port and source port to 0 when IpProtocol is set to Any.
400	Duplicated.DestinationPort	The specified param DestinationPort is duplicated.	-
400	InvalidForwardEntryId.NotFound	Specified forward entry ID does not exist	The specified DNAT entry does not exist.
400	OperationUnsupported.EipInBinding	Create snat entry with eip in associating status is unsupported.	You cannot use an associated EIP when you create an SNAT entry.
400	QuotaExceeded.ForwardEntrySessionManytoOne	The dnat session quota is exceed.	The number of DNAT sessions exceeds the upper limit.
404	ResourceNotFound.NatIp	The specified resource of %s is not found.	The specified NatIp parameter is not found.
404	ResourceNotFound.ForwardEntry	The specified resource of %s is not found.	The specified %s resource does not exist.
404	InvalidRegionId.NotFound	The specified RegionId does not exist in our records.	The specified region ID does not exist.
404	InvalidExternalIp.NotFound	Specified External Ip address does not found on the VRouter	The specified EIP does not exist.
404	InvalidForwardTableId.NotFound	Specified forward table does not exist.	The specified DNAT table does not exist. Check the parameter and try again.

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

Change history

Change time	Summary of changes	Operation
2023-03-01	The Error code has changed	View Change Details