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In order to connect to your backend services from the API Cloud, the following should be facilitated:
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the API Gateway should
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connect to
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your backend services.
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If your backend services are exposed to the Internet (e.g., hosted in WSO2 App Cloud or another cloud platform), then the API Gateway can connect to them via their Internet URLs.
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If your backend services are private to your Intranet, WSO2 supports the following methods to set up the connectivity from the API Gateway to your backend services.
- Using a reverse proxy in your DMZ. The API Gateway then connects to the publicly visible reverse proxy, which in turn passes the calls to the backend service.
- Using a VPN link between the API Cloud and your Intranet.
See Grant Access to your Private Backend Services for details.
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- Using basic authentication
- Using digest authentication
- Using a custom authorization token
- Using a certificate-based API Gateway
- Whitelisting IPs
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| Tip |
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If you choose to grant access to your private backend services through a reverse proxy or a VPN, it is highly recommended to Secure the Link Between your Backend Services and the API |
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Cloud as your private backend services will be exposed to a multi-tenanted Cloud environment. |