What's NAT Gateway?
Use Cases
High-Speed, Secure Internet Access
For on-premises servers connecting to a VPC through Direct Connect, configure SNAT and DNAT rules on public NAT gateways to allow the servers to share EIPs.
Advantages
Higher Performance with Multiple Gateways
If a single NAT gateway bottlenecks your services, use multiple ones. Simply create multiple route tables in your VPC to direct traffic from different VPC subnets to the NAT gateways you configure.
Advantages
Unified Network Management
A private NAT gateway allows for communication between a VPC and an on-premises data center without needing to change your on-premises networks. This makes it safer and less expensive to migrate services to the cloud.
Advantages
Why NAT Gateway?
Privacy for Peace of Mind
Public NAT gateways shield your cloud servers by letting them share an EIP instead of exposing their own IP addresses.
HBIS Supply Chain Management Company owns two e-commerce platforms for steel industry spare parts, and uses NAT Gateway as a unified egress for secure Internet communications.
Legacy Networks Preserved
Private NAT gateways let you keep cloud migration simple by maintaining the same network even with overlapping CIDR blocks in your on-premises network.
Customers from Huawei IT Services, Huawei's office system, moved their workloads to the cloud but kept their on-premises networking to make migration simpler.
DNAT Access Control
By defining port forwarding in DNAT rules, you can use a public NAT gateway to allow your instances to provide Internet-accessible services with much fewer EIPs.
Access Acceleration in Hybrid Clouds
On-premises servers connecting to Huawei Cloud through Direct Connect can use the EIP bound to a NAT gateway rule to quickly access Internet resources.
Meitu photo-editing and sharing for smartphones is hugely popular in China and Asia. Meitu migrated some of its workloads to Huawei Cloud while keeping some on-premises, where servers enjoy fast Internet access with rule-bound EIPs.
