What's New

1

Pay-per-use billing (by hour) of private NAT gateways

The OBT of private gateways has ended. In some regions, private NAT gateways are free for a limited time. In some regions, you will be charged for using private NAT gateways by hour.

Commercial use

Billing (Private NAT Gateways)

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Private NAT gateway monitoring

Private NAT gateways can be monitored.

Commercial use

Supported Metrics

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Custom IP address can be used by DNAT rules of private NAT gateways.

When you are adding a DNAT rule for a private NAT gateway, you can set Instance Type to a custom IP address, which can be the IP address of an on-premises server that is connected to a VPC through Direct Connect.

Commercial use

Adding a DNAT Rule

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The maximum bandwidth supported by a public NAT gateway is increased.

A public NAT gateway supports up to 20 Gbit/s of bandwidth.

Commercial use

Product Specifications

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Private NAT gateways

Private NAT gateways provide network address translation (NAT) for load balancers and cloud servers in a VPC, allowing servers to share a private IP address to access or provide services accessible from an on-premises data center or a remote VPC.

Commercial use

Using Private NAT Gateways to Enable Communications Between Cloud and On-premises Networks

2

Monitoring of bandwidth used by servers using SNAT

You can view the bandwidth used by servers using SNAT and the IP addresses of the 20 servers using the most bandwidth on the Cloud Eye console.

Commercial use

Supported Metrics

1

An EIP bound to an SNAT rule can be pinged from the Internet.

This facilitates the monitoring of the Internet network quality.

Commercial use

Supported Metrics

1

NAT gateways can be displayed on the My Resources page.

You can view the resource overview more conveniently.

Commercial use

Querying All Resources

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SNAT and DNAT rules can share the same EIP.

EIPs can be saved.

Commercial use

Notes and Constraints

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API v2

A new API version is available.

Commercial use

API v2

3

Each SNAT rule can have multiple EIPs bound.

EIPs bound to resources may be attacked. To improve system reliability, you can select multiple EIPs when configuring an SNAT rule so that if one EIP is attacked, another one can be used to ensure service continuity.

Commercial use

Application Scenarios

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DNAT rules can be modified.

You can modify DNAT rules as needed.

Commercial use

Modifying a DNAT Rule

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DNAT rules support mapping between EIPs and virtual IP addresses.

DNAT rules map virtual IP addresses used by databases, such as RDS DB instances, directly to EIPs of ECSs.

Commercial use

Adding a DNAT Rule

2

DNAT rules can be imported and exported in batches.

You can add a DNAT rule for each port of a server. If multiple servers need to provide services accessible from the Internet, you can import DNAT rules in batches.

Commercial use

Importing and Exporting DNAT Rules Using Templates

3

Port ranges for DNAT rules

Port ranges can be configured for DNAT rules.

Commercial use

Adding a DNAT Rule

4

Batch deletion of DNAT rules

You can select DNAT rules to be deleted and delete them in batches.

Commercial use

Deleting DNAT Rules in Batches

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Price calculator

You can use the price calculator to calculate the estimated NAT gateway price.

Commercial use

Billing (Public NAT Gateway)

2

DNAT rules support Direct Connect.

On-premises servers that connect to a VPC using Direct Connect can provide services accessible from the Internet using a DNAT rule.

Commercial use

Configuring SNAT and DNAT Rules to Allow On-premises Servers to Communicate with the Internet at High Speed

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DNAT rules can be searched for by private IP address.

You can search for a DNAT rule by its private IP address.

Commercial use

Viewing a DNAT Rule

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CIDR block of an SNAT rule

SNAT rules can be applied to all servers deployed within a CIDR block.

Commercial use

Adding an SNAT Rule