Modifies a DNAT entry.

Note You cannot modify a DNAT entry if the DNAT entry is in the Pending or Modifying state.


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Request parameters

Parameter Type Required? Example value Description
Action String Yes ModifyForwardEntry

The name of this action. Value: 


ForwardEntryId String Yes fwd-8vbn3bc8roygjp0gy3xk7

 The ID of the DNAT entry.

ForwardTableId String Yes ftb-8vbx8xu2lqj9qb334h0ow

The ID of the DNAT table.

RegionId String Yes cn-hangzhou

The region to which the NAT Gateway belongs.

To query the region ID, call DescribeRegions.

ExternalIp String No

The public IP address.

ExternalPort String No 80 The public port. Value range: 1 to 65535.
InternalIp String No The target private IP address.
InternalPort String No 80 The target private port. Value range: 1 to 65535.
IpProtocol String No TCP
The protocol type. Valid values:
  • TCP: forward TCP packets.

  • UDP: forward UDP packets.

  • Any: forward all packets.

Response parameters

Parameter Type Example value Description
RequestId String 24CC85DC-7700-4F09-9624-99E988C7DD03 The ID of the request.


Request example
&RegionId= cn-hangzhou
Response example
  • XML format

  • JSON format


Error codes

HTTP status code Error code Error message Description
404 InvalidRegionId.NotFound The specified RegionId does not exist in our records. The specified region ID does not exist.
400 InvalidExternalIp.Malformed The specified ExternalIp is not a valid IP address. The specified public IP address is invalid.
400 InvalidInternalIp.Malformed The specified InternalIp is not a valid IP address. The specified InternalIp is invalid.
400 InvalidExternalPort.Malformed The specified ExternalPort is not a valid port. The public port is invalid.
400 InvalidInternalPort.Malformed The specified InternalPort is not a valid port. The private port is invalid.
400 Forbidden.DestnationIpOutOfVpcCIDR The specified Destination Ip is Out of VPC CIDR. The specified InternalIp is not in the CIDR block of the VPC.
400 InvalidProtocal.ValueNotSupported The specified IpProtocol does not support. The specified protocol type is not supported.
400 IncorretForwardEntryStatus Some Forward entry status blocked this operation.. You cannot perform this operation 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. The quota for custom route entries in the route table has been reached. To increase the quota, open a ticket.
404 InvalidForwardEntryId.NotFound Specified forward entry ID does not exist The specified DNAT entry does not exist.
404 InvalidExternalIp.NotFound Specified External Ip address does not found on the VRouter The specified ExternalIp does not exist.
404 InvalidForwardTableId.NotFound Specified forward table does not exist. The specified DNAT table does not exist.
400 Forbidden.ExternalIp.UsedInSnatTable The specified ExternalIp is already used in SnatTable This specified ExternalIp is being used by an SNAT rule. Select a different IP address or delete the SNAT rule that uses this IP address.
400 Forbidden.Already.Bounded The specified instance already bounded The specified instance is already attached.

See common error codes