Compute
Elastic Cloud Server
Huawei Cloud Flexus
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Cloud Phone Host
Huawei Cloud EulerOS
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
VPC Endpoint
Cloud Connect
Enterprise Router
Enterprise Switch
Global Accelerator
Management & Governance
Cloud Eye
Identity and Access Management
Cloud Trace Service
Resource Formation Service
Tag Management Service
Log Tank Service
Config
OneAccess
Resource Access Manager
Simple Message Notification
Application Performance Management
Application Operations Management
Organizations
Optimization Advisor
IAM Identity Center
Cloud Operations Center
Resource Governance Center
Migration
Server Migration Service
Object Storage Migration Service
Cloud Data Migration
Migration Center
Cloud Ecosystem
KooGallery
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP Filing
Support Plans
My Credentials
Customer Operation Capabilities
Partner Support Plans
Professional Services
Analytics
MapReduce Service
Data Lake Insight
CloudTable Service
Cloud Search Service
Data Lake Visualization
Data Ingestion Service
GaussDB(DWS)
DataArts Studio
Data Lake Factory
DataArts Lake Formation
IoT
IoT Device Access
Others
Product Pricing Details
System Permissions
Console Quick Start
Common FAQs
Instructions for Associating with a HUAWEI CLOUD Partner
Message Center
Security & Compliance
Security Technologies and Applications
Web Application Firewall
Host Security Service
Cloud Firewall
SecMaster
Anti-DDoS Service
Data Encryption Workshop
Database Security Service
Cloud Bastion Host
Data Security Center
Cloud Certificate Manager
Edge Security
Managed Threat Detection
Blockchain
Blockchain Service
Web3 Node Engine Service
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
Storage
Object Storage Service
Elastic Volume Service
Cloud Backup and Recovery
Storage Disaster Recovery Service
Scalable File Service Turbo
Scalable File Service
Volume Backup Service
Cloud Server Backup Service
Data Express Service
Dedicated Distributed Storage Service
Containers
Cloud Container Engine
SoftWare Repository for Container
Application Service Mesh
Ubiquitous Cloud Native Service
Cloud Container Instance
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GeminiDB
GaussDB
Distributed Database Middleware
Database and Application Migration UGO
TaurusDB
Middleware
Distributed Cache Service
API Gateway
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
Multi-Site High Availability Service
EventGrid
Dedicated Cloud
Dedicated Computing Cluster
Business Applications
Workspace
ROMA Connect
Message & SMS
Domain Name Service
Edge Data Center Management
Meeting
AI
Face Recognition Service
Graph Engine Service
Content Moderation
Image Recognition
Optical Character Recognition
ModelArts
ImageSearch
Conversational Bot Service
Speech Interaction Service
Huawei HiLens
Video Intelligent Analysis Service
Developer Tools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Content Delivery & Edge Computing
Content Delivery Network
Intelligent EdgeFabric
CloudPond
Intelligent EdgeCloud
Solutions
SAP Cloud
High Performance Computing
Developer Services
ServiceStage
CodeArts
CodeArts PerfTest
CodeArts Req
CodeArts Pipeline
CodeArts Build
CodeArts Deploy
CodeArts Artifact
CodeArts TestPlan
CodeArts Check
CodeArts Repo
Cloud Application Engine
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive
On this page

Adding an SNAT Rule

Updated on 2022-01-25 GMT+08:00

Scenarios

After the NAT gateway is created, you need to add SNAT rules. With the SNAT rule, servers in a VPC subnet or servers that are connected to a VPC through Direct Connect or VPN can access the Internet by sharing an EIP.

Each SNAT rule is configured for one subnet. If there are multiple subnets in a VPC, you can create several SNAT rules to share one or more EIPs.

Prerequisites

  • A NAT gateway has been created.

Procedure

  1. Log in to the management console.
  2. Under Network, click NAT Gateway.
  3. On the displayed page, click the name of the NAT gateway for which you want to add the SNAT rule.
  4. On the SNAT Rules tab, click Add SNAT Rule.

    Figure 1 Add SNAT Rule
  5. Specify the parameters as prompted. For details, see Table 1.
    Table 1 Parameter description

    Parameter

    Condition

    Description

    Scenario

    N/A

    Specifies the scenarios in which the SNAT rule is used.

    Select VPC when your servers in a VPC need to access the Internet.

    Select Direct Connect when the servers that are connected to a VPC through Direct Connect or VPN in your data center need to access the Internet.

    Type

    This parameter is available when you select VPC for Scenario.

    You can set it to Subnet or Custom based on service requirements.

    Select Subnet when all servers in a VPC subnet need to access the Internet through the SNAT rule.

    Select Custom when specific servers in a VPC subnet need to access the Internet through the SNAT rule.

    Subnet

    This parameter is available when you select VPC for Scenario, and Subnet for Type.

    Specifies the subnet in which servers can access the Internet through the SNAT rule.

    EIP

    • This parameter is available when you select VPC for Scenario.
    • This parameter is available when you select Direct Connect for Scenario.

    Specifies the EIP used for accessing the Internet.

    You can only select an EIP that has not been bound, has been bound to a DNAT rule with Port Type set to Specific port of the current NAT gateway, or has been bound to an SNAT rule of the current NAT gateway.

    You can select multiple EIPs at a time. A maximum of 20 EIPs can be selected for each SNAT rule. The EIP used for the SNAT rule is randomly chosen from the ones you select when you add the rule.

    CIDR Block

    • This parameter is available when you select VPC for Scenario, and Custom for Type.
    • This parameter is available when you select Direct Connect for Scenario.

    In the VPC scenario, specify a VPC subnet to enable the servers whose IP addresses in that subnet to access the Internet through the SNAT rule.

    In the Direct Connect scenario, specify a CIDR block of your data center to enable your servers to access the Internet through the SNAT rule.

    Monitoring

    N/A

    Create alarm rules in Cloud Eye.

    The alarm rules help you monitor your SNAT connections in a timely manner.

    Description

    N/A

    Provides supplementary information about the NAT gateway. The description can contain a maximum of 255 characters.

  6. Click OK.
    NOTE:

    You can add multiple SNAT rules for a NAT gateway to suite your service requirements.

We use cookies to improve our site and your experience. By continuing to browse our site you accept our cookie policy. Find out more

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback