Help Center/ NAT Gateway/ User Guide (Ankara Region)/ Public NAT Gateways/ Public NAT Gateway Overview

Updated on 2024-04-15 GMT+08:00

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Public NAT Gateway Overview

A public NAT gateway enables cloud and on-premises servers in a private subnet to access the Internet or provide services accessible from the Internet. Cloud servers are ECSs and BMSs in a VPC. On-premises servers are servers in on-premises data centers that connect to a VPC through Direct Connect or VPN. A public NAT gateway supports up to 20 Gbit/s of bandwidth.

The process of using a public NAT gateway is as follows.

Figure 1 Process of using a public NAT gateway

An SNAT rule and a DNAT rule cannot share the same EIP. If you need to create an SNAT rule and a DNAT rule, assign two EIPs.

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