Configuring an Internet Gateway
On Private Cloud Appliance, you can configure an Internet Gateway (IGW) which provides the VCN with outside access through the on-premises data center network.
Avoid entering confidential information in names and tags.
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In the Compute Web UI navigation menu, select Networking, then select Virtual Cloud Networks. 
- At the top of the page, select the compartment that contains the VCN where the internet gateway will be created.
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Select the name of the VCN. The VCN details page is displayed. 
- Under Resources, select Internet Gateways.
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Select Create Internet Gateway. 
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Enter the following information: - 
Name: Provide a descriptive name for the internet gateway. Avoid entering confidential information 
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Create in Compartment: Select the compartment in which to create the Internet Gateway. 
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Enabled: Use the toggle to decide if the gateway is enabled at creation or not. The default is to enable the gateway:- 
Yes: Gateway Enabled: By default, the VCN uses the gateway when created. 
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(No: Gateway Disabled): You can set the gateway not see traffic until it's explicitly enabled to do so. 
 
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Tagging: (Optional) Add defined or free-form tags for this resource as described in Adding Tags at Resource Creation. Tags can also be applied later. 
 
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Select Create Internet Gateway. The Internet Gateway is now ready for the addition of route rules or security settings. See Configuring VCN Rules and Options. 
 
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- Use the oci network internet-gateway create command and required parameters to create a new internet gateway for the specified VCN. - oci network internet-gateway create [OPTIONS]- For a complete list of CLI commands, flags, and options, see the Command Line Reference. 
- Use the CreateInternetGateway operation to create a new internet gateway for the specified VCN. - For information about using the API and signing requests, see REST APIs and Security Credentials. For information about SDKs, see Software Development Kits and Command Line Interface.